group exists yet but the code still goes and iterates over event
siblings
-----BEGIN PGP SIGNATURE-----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=KqCi
-----END PGP SIGNATURE-----
Merge tag 'perf_urgent_for_v6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Borislav Petkov:
- Fix a lockdep warning when the event given is the first one, no event
group exists yet but the code still goes and iterates over event
siblings
* tag 'perf_urgent_for_v6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86: Fix lockdep warning in for_each_sibling_event() on SPR
The primary bug Alyssa noticed was that with FineIBT enabled function
prologues have a spurious ENDBR instruction:
__cfi_foo:
endbr64
subl $hash, %r10d
jz 1f
ud2
nop
1:
foo:
endbr64 <--- *sadface*
This means that any indirect call that fails to target the __cfi symbol
and instead targets (the regular old) foo+0, will succeed due to that
second ENDBR.
Fixing this lead to the discovery of a single indirect call that was
still doing this: ret_from_fork(), since that's an assembly stub the
compmiler would not generate the proper kCFI indirect call magic and it
would not get patched.
Brian came up with the most comprehensive fix -- convert the thing to C
with only a very thin asm wrapper. This ensures the kernel thread
boostrap is a proper kCFI call.
While discussing all this, Kees noted that kCFI hashes could/should be
poisoned to seal all functions whose address is never taken, further
limiting the valid kCFI targets -- much like we already do for IBT.
So what was a 'simple' observation and fix cascaded into a bunch of
inter-related CFI infrastructure fixes.
-----BEGIN PGP SIGNATURE-----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=RhPI
-----END PGP SIGNATURE-----
Merge tag 'x86_urgent_for_6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 CFI fixes from Peter Zijlstra:
"Fix kCFI/FineIBT weaknesses
The primary bug Alyssa noticed was that with FineIBT enabled function
prologues have a spurious ENDBR instruction:
__cfi_foo:
endbr64
subl $hash, %r10d
jz 1f
ud2
nop
1:
foo:
endbr64 <--- *sadface*
This means that any indirect call that fails to target the __cfi
symbol and instead targets (the regular old) foo+0, will succeed due
to that second ENDBR.
Fixing this led to the discovery of a single indirect call that was
still doing this: ret_from_fork(). Since that's an assembly stub the
compiler would not generate the proper kCFI indirect call magic and it
would not get patched.
Brian came up with the most comprehensive fix -- convert the thing to
C with only a very thin asm wrapper. This ensures the kernel thread
boostrap is a proper kCFI call.
While discussing all this, Kees noted that kCFI hashes could/should be
poisoned to seal all functions whose address is never taken, further
limiting the valid kCFI targets -- much like we already do for IBT.
So what was a 'simple' observation and fix cascaded into a bunch of
inter-related CFI infrastructure fixes"
* tag 'x86_urgent_for_6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cfi: Only define poison_cfi() if CONFIG_X86_KERNEL_IBT=y
x86/fineibt: Poison ENDBR at +0
x86: Rewrite ret_from_fork() in C
x86/32: Remove schedule_tail_wrapper()
x86/cfi: Extend ENDBR sealing to kCFI
x86/alternative: Rename apply_ibt_endbr()
x86/cfi: Extend {JMP,CAKK}_NOSPEC comment
-----BEGIN PGP SIGNATURE-----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=GVUB
-----END PGP SIGNATURE-----
Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says:
====================
pull-request: bpf-next 2023-07-13
We've added 67 non-merge commits during the last 15 day(s) which contain
a total of 106 files changed, 4444 insertions(+), 619 deletions(-).
The main changes are:
1) Fix bpftool build in presence of stale vmlinux.h,
from Alexander Lobakin.
2) Introduce bpf_me_mcache_free_rcu() and fix OOM under stress,
from Alexei Starovoitov.
3) Teach verifier actual bounds of bpf_get_smp_processor_id()
and fix perf+libbpf issue related to custom section handling,
from Andrii Nakryiko.
4) Introduce bpf map element count, from Anton Protopopov.
5) Check skb ownership against full socket, from Kui-Feng Lee.
6) Support for up to 12 arguments in BPF trampoline, from Menglong Dong.
7) Export rcu_request_urgent_qs_task, from Paul E. McKenney.
8) Fix BTF walking of unions, from Yafang Shao.
9) Extend link_info for kprobe_multi and perf_event links,
from Yafang Shao.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (67 commits)
selftests/bpf: Add selftest for PTR_UNTRUSTED
bpf: Fix an error in verifying a field in a union
selftests/bpf: Add selftests for nested_trust
bpf: Fix an error around PTR_UNTRUSTED
selftests/bpf: add testcase for TRACING with 6+ arguments
bpf, x86: allow function arguments up to 12 for TRACING
bpf, x86: save/restore regs with BPF_DW size
bpftool: Use "fallthrough;" keyword instead of comments
bpf: Add object leak check.
bpf: Convert bpf_cpumask to bpf_mem_cache_free_rcu.
bpf: Introduce bpf_mem_free_rcu() similar to kfree_rcu().
selftests/bpf: Improve test coverage of bpf_mem_alloc.
rcu: Export rcu_request_urgent_qs_task()
bpf: Allow reuse from waiting_for_gp_ttrace list.
bpf: Add a hint to allocated objects.
bpf: Change bpf_mem_cache draining process.
bpf: Further refactor alloc_bulk().
bpf: Factor out inc/dec of active flag into helpers.
bpf: Refactor alloc_bulk().
bpf: Let free_all() return the number of freed elements.
...
====================
Link: https://lore.kernel.org/r/20230714020910.80794-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
For now, the BPF program of type BPF_PROG_TYPE_TRACING can only be used
on the kernel functions whose arguments count less than or equal to 6, if
not considering '> 8 bytes' struct argument. This is not friendly at all,
as too many functions have arguments count more than 6.
According to the current kernel version, below is a statistics of the
function arguments count:
argument count | function count
7 | 704
8 | 270
9 | 84
10 | 47
11 | 47
12 | 27
13 | 22
14 | 5
15 | 0
16 | 1
Therefore, let's enhance it by increasing the function arguments count
allowed in arch_prepare_bpf_trampoline(), for now, only x86_64.
For the case that we don't need to call origin function, which means
without BPF_TRAMP_F_CALL_ORIG, we need only copy the function arguments
that stored in the frame of the caller to current frame. The 7th and later
arguments are stored in "$rbp + 0x18", and they will be copied to the
stack area following where register values are saved.
For the case with BPF_TRAMP_F_CALL_ORIG, we need prepare the arguments
in stack before call origin function, which means we need alloc extra
"8 * (arg_count - 6)" memory in the top of the stack. Note, there should
not be any data be pushed to the stack before calling the origin function.
So 'rbx' value will be stored on a stack position higher than where stack
arguments are stored for BPF_TRAMP_F_CALL_ORIG.
According to the research of Yonghong, struct members should be all in
register or all on the stack. Meanwhile, the compiler will pass the
argument on regs if the remaining regs can hold the argument. Therefore,
we need save the arguments in order. Otherwise, disorder of the args can
happen. For example:
struct foo_struct {
long a;
int b;
};
int foo(char, char, char, char, char, struct foo_struct,
char);
the arg1-5,arg7 will be passed by regs, and arg6 will by stack. Therefore,
we should save/restore the arguments in the same order with the
declaration of foo(). And the args used as ctx in stack will be like this:
reg_arg6 -- copy from regs
stack_arg2 -- copy from stack
stack_arg1
reg_arg5 -- copy from regs
reg_arg4
reg_arg3
reg_arg2
reg_arg1
We use EMIT3_off32() or EMIT4() for "lea" and "sub". The range of the
imm in "lea" and "sub" is [-128, 127] if EMIT4() is used. Therefore,
we use EMIT3_off32() instead if the imm out of the range.
It works well for the FENTRY/FEXIT/MODIFY_RETURN.
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20230713040738.1789742-3-imagedong@tencent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
As we already reserve 8 byte in the stack for each reg, it is ok to
store/restore the regs in BPF_DW size. This will make the code in
save_regs()/restore_regs() simpler.
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20230713040738.1789742-2-imagedong@tencent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
- Fix some missing-prototype warnings
- Fix user events struct args (did not include size of struct)
When creating a user event, the "struct" keyword is to denote
that the size of the field will be passed in. But the parsing
failed to handle this case.
- Add selftest to struct sizes for user events
- Fix sample code for direct trampolines.
The sample code for direct trampolines attached to handle_mm_fault().
But the prototype changed and the direct trampoline sample code
was not updated. Direct trampolines needs to have the arguments correct
otherwise it can fail or crash the system.
- Remove unused ftrace_regs_caller_ret() prototype.
- Quiet false positive of FORTIFY_SOURCE
Due to backward compatibility, the structure used to save stack traces
in the kernel had a fixed size of 8. This structure is exported to
user space via the tracing format file. A change was made to allow
more than 8 functions to be recorded, and user space now uses the
size field to know how many functions are actually in the stack.
But the structure still has size of 8 (even though it points into
the ring buffer that has the required amount allocated to hold a
full stack. This was fine until the fortifier noticed that the
memcpy(&entry->caller, stack, size) was greater than the 8 functions
and would complain at runtime about it. Hide this by using a pointer
to the stack location on the ring buffer instead of using the address
of the entry structure caller field.
- Fix a deadloop in reading trace_pipe that was caused by a mismatch
between ring_buffer_empty() returning false which then asked to
read the data, but the read code uses rb_num_of_entries() that
returned zero, and causing a infinite "retry".
- Fix a warning caused by not using all pages allocated to store
ftrace functions, where this can happen if the linker inserts a bunch of
"NULL" entries, causing the accounting of how many pages needed
to be off.
- Fix histogram synthetic event crashing when the start event is
removed and the end event is still using a variable from it.
- Fix memory leak in freeing iter->temp in tracing_release_pipe()
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZLBF6hQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qkswAP4mhdoFFfNosM7+Sh/R4t31IxKZApm9
M2Hf9jgvJ7b65AD/VV1XfO6skw2+5Yn9S4UyNE2MQaYxPwWpONcNFUzZ3Q8=
=Nb+7
-----END PGP SIGNATURE-----
Merge tag 'trace-v6.5-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix some missing-prototype warnings
- Fix user events struct args (did not include size of struct)
When creating a user event, the "struct" keyword is to denote that
the size of the field will be passed in. But the parsing failed to
handle this case.
- Add selftest to struct sizes for user events
- Fix sample code for direct trampolines.
The sample code for direct trampolines attached to handle_mm_fault().
But the prototype changed and the direct trampoline sample code was
not updated. Direct trampolines needs to have the arguments correct
otherwise it can fail or crash the system.
- Remove unused ftrace_regs_caller_ret() prototype.
- Quiet false positive of FORTIFY_SOURCE
Due to backward compatibility, the structure used to save stack
traces in the kernel had a fixed size of 8. This structure is
exported to user space via the tracing format file. A change was made
to allow more than 8 functions to be recorded, and user space now
uses the size field to know how many functions are actually in the
stack.
But the structure still has size of 8 (even though it points into the
ring buffer that has the required amount allocated to hold a full
stack.
This was fine until the fortifier noticed that the
memcpy(&entry->caller, stack, size) was greater than the 8 functions
and would complain at runtime about it.
Hide this by using a pointer to the stack location on the ring buffer
instead of using the address of the entry structure caller field.
- Fix a deadloop in reading trace_pipe that was caused by a mismatch
between ring_buffer_empty() returning false which then asked to read
the data, but the read code uses rb_num_of_entries() that returned
zero, and causing a infinite "retry".
- Fix a warning caused by not using all pages allocated to store ftrace
functions, where this can happen if the linker inserts a bunch of
"NULL" entries, causing the accounting of how many pages needed to be
off.
- Fix histogram synthetic event crashing when the start event is
removed and the end event is still using a variable from it
- Fix memory leak in freeing iter->temp in tracing_release_pipe()
* tag 'trace-v6.5-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix memory leak of iter->temp when reading trace_pipe
tracing/histograms: Add histograms to hist_vars if they have referenced variables
tracing: Stop FORTIFY_SOURCE complaining about stack trace caller
ftrace: Fix possible warning on checking all pages used in ftrace_process_locs()
ring-buffer: Fix deadloop issue on reading trace_pipe
tracing: arm64: Avoid missing-prototype warnings
selftests/user_events: Test struct size match cases
tracing/user_events: Fix struct arg size match check
x86/ftrace: Remove unsued extern declaration ftrace_regs_caller_ret()
arm64: ftrace: Add direct call trampoline samples support
samples: ftrace: Save required argument registers in sample trampolines
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCZK/pZgAKCRCAXGG7T9hj
vmQlAQD/xi8BUlCe0a7l6kf7+nMkOWmvpVIrmdxrqQ1Wj4c9FAEA0FuI+XXz2sow
ov+il7z3UnViGsieeSHTW+Gxdn6Blgc=
=LzAo
-----END PGP SIGNATURE-----
Merge tag 'for-linus-6.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- a cleanup of the Xen related ELF-notes
- a fix for virtio handling in Xen dom0 when running Xen in a VM
* tag 'for-linus-6.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/virtio: Fix NULL deref when a bridge of PCI root bus has no parent
x86/Xen: tidy xen-head.S
poison_cfi() was introduced in:
9831c6253a ("x86/cfi: Extend ENDBR sealing to kCFI")
... but it's only ever used under CONFIG_X86_KERNEL_IBT=y,
and if that option is disabled, we get:
arch/x86/kernel/alternative.c:1243:13: error: ‘poison_cfi’ defined but not used [-Werror=unused-function]
Guard the definition with CONFIG_X86_KERNEL_IBT.
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Sami Tolvanen <samitolvanen@google.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Alyssa noticed that when building the kernel with CFI_CLANG+IBT and
booting on IBT enabled hardware to obtain FineIBT, the indirect
functions look like:
__cfi_foo:
endbr64
subl $hash, %r10d
jz 1f
ud2
nop
1:
foo:
endbr64
This is because the compiler generates code for kCFI+IBT. In that case
the caller does the hash check and will jump to +0, so there must be
an ENDBR there. The compiler doesn't know about FineIBT at all; also
it is possible to actually use kCFI+IBT when booting with 'cfi=kcfi'
on IBT enabled hardware.
Having this second ENDBR however makes it possible to elide the CFI
check. Therefore, we should poison this second ENDBR when switching to
FineIBT mode.
Fixes: 931ab63664 ("x86/ibt: Implement FineIBT")
Reported-by: "Milburn, Alyssa" <alyssa.milburn@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20230615193722.194131053@infradead.org
When kCFI is enabled, special handling is needed for the indirect call
to the kernel thread function. Rewrite the ret_from_fork() function in
C so that the compiler can properly handle the indirect call.
Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lkml.kernel.org/r/20230623225529.34590-3-brgerst@gmail.com
The unwinder expects a return address at the very top of the kernel
stack just below pt_regs and before any stack frame is created. Instead
of calling a wrapper, set up a return address as if ret_from_fork()
was called from the syscall entry code.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lkml.kernel.org/r/20230623225529.34590-2-brgerst@gmail.com
Kees noted that IBT sealing could be extended to kCFI.
Fundamentally it is the list of functions that do not have their
address taken and are thus never called indirectly. It doesn't matter
that objtool uses IBT infrastructure to determine this list, once we
have it it can also be used to clobber kCFI hashes and avoid kCFI
indirect calls.
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lkml.kernel.org/r/20230622144321.494426891%40infradead.org
The current name doesn't reflect what it does very well.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lkml.kernel.org/r/20230622144321.427441595%40infradead.org
With the introduction of kCFI these helpers are no longer equivalent
to C indirect calls and should be used with care.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lkml.kernel.org/r/20230622144321.360957723%40infradead.org
On SPR, the load latency event needs an auxiliary event in the same
group to work properly. There's a check in intel_pmu_hw_config()
for this to iterate sibling events and find a mem-loads-aux event.
The for_each_sibling_event() has a lockdep assert to make sure if it
disabled hardirq or hold leader->ctx->mutex. This works well if the
given event has a separate leader event since perf_try_init_event()
grabs the leader->ctx->mutex to protect the sibling list. But it can
cause a problem when the event itself is a leader since the event is
not initialized yet and there's no ctx for the event.
Actually I got a lockdep warning when I run the below command on SPR,
but I guess it could be a NULL pointer dereference.
$ perf record -d -e cpu/mem-loads/uP true
The code path to the warning is:
sys_perf_event_open()
perf_event_alloc()
perf_init_event()
perf_try_init_event()
x86_pmu_event_init()
hsw_hw_config()
intel_pmu_hw_config()
for_each_sibling_event()
lockdep_assert_event_ctx()
We don't need for_each_sibling_event() when it's a standalone event.
Let's return the error code directly.
Fixes: f3c0eba287 ("perf: Add a few assertions")
Reported-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20230704181516.3293665-1-namhyung@kernel.org
boot reordering work
-----BEGIN PGP SIGNATURE-----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=RZFV
-----END PGP SIGNATURE-----
Merge tag 'x86_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fpu fix from Borislav Petkov:
- Do FPU AP initialization on Xen PV too which got missed by the recent
boot reordering work
* tag 'x86_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/xen: Fix secondary processors' FPU initialization
On shutdown or kexec, the kernel tries to park the non-boot CPUs with an
INIT IPI. But the same code path is also used by the crash utility. If the
CPU which panics is not the boot CPU then it sends an INIT IPI to the boot
CPU which resets the machine. Prevent this by validating that the CPU which
runs the stop mechanism is the boot CPU. If not, leave the other CPUs in
HLT.
-----BEGIN PGP SIGNATURE-----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=DOCF
-----END PGP SIGNATURE-----
Merge tag 'x86-core-2023-07-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Thomas Gleixner:
"A single fix for the mechanism to park CPUs with an INIT IPI.
On shutdown or kexec, the kernel tries to park the non-boot CPUs with
an INIT IPI. But the same code path is also used by the crash utility.
If the CPU which panics is not the boot CPU then it sends an INIT IPI
to the boot CPU which resets the machine.
Prevent this by validating that the CPU which runs the stop mechanism
is the boot CPU. If not, leave the other CPUs in HLT"
* tag 'x86-core-2023-07-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/smp: Don't send INIT to boot CPU
Parking CPUs in INIT works well, except for the crash case when the CPU
which invokes smp_park_other_cpus_in_init() is not the boot CPU. Sending
INIT to the boot CPU resets the whole machine.
Prevent this by validating that this runs on the boot CPU. If not fall back
and let CPUs hang in HLT.
Fixes: 45e34c8af5 ("x86/smp: Put CPUs into INIT on shutdown if possible")
Reported-by: Baokun Li <libaokun1@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Baokun Li <libaokun1@huawei.com>
Link: https://lore.kernel.org/r/87ttui91jo.ffs@tglx
Moving the call of fpu__init_cpu() from cpu_init() to start_secondary()
broke Xen PV guests, as those don't call start_secondary() for APs.
Call fpu__init_cpu() in Xen's cpu_bringup(), which is the Xen PV
replacement of start_secondary().
Fixes: b81fac906a ("x86/fpu: Move FPU initialization into arch_cpu_finalize_init()")
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20230703130032.22916-1-jgross@suse.com
First of all move PV-only ELF notes inside the XEN_PV conditional; note
that
- HV_START_LOW is dropped altogether, as it was meaningful for 32-bit PV
only,
- the 32-bit instance of VIRT_BASE is dropped, as it would be dead code
once inside the conditional,
- while PADDR_OFFSET is not exactly unused for PVH, it defaults to zero
there, and the hypervisor (or tool stack) complains if it is present
but VIRT_BASE isn't.
Then have the "supported features" note actually report reality: All
three of the features there are supported and/or applicable only in
certain cases.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/f99bacc6-2a2f-41b0-5c0b-e01b7051cb07@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
* Eager page splitting optimization for dirty logging, optionally
allowing for a VM to avoid the cost of hugepage splitting in the stage-2
fault path.
* Arm FF-A proxy for pKVM, allowing a pKVM host to safely interact with
services that live in the Secure world. pKVM intervenes on FF-A calls
to guarantee the host doesn't misuse memory donated to the hyp or a
pKVM guest.
* Support for running the split hypervisor with VHE enabled, known as
'hVHE' mode. This is extremely useful for testing the split
hypervisor on VHE-only systems, and paves the way for new use cases
that depend on having two TTBRs available at EL2.
* Generalized framework for configurable ID registers from userspace.
KVM/arm64 currently prevents arbitrary CPU feature set configuration
from userspace, but the intent is to relax this limitation and allow
userspace to select a feature set consistent with the CPU.
* Enable the use of Branch Target Identification (FEAT_BTI) in the
hypervisor.
* Use a separate set of pointer authentication keys for the hypervisor
when running in protected mode, as the host is untrusted at runtime.
* Ensure timer IRQs are consistently released in the init failure
paths.
* Avoid trapping CTR_EL0 on systems with Enhanced Virtualization Traps
(FEAT_EVT), as it is a register commonly read from userspace.
* Erratum workaround for the upcoming AmpereOne part, which has broken
hardware A/D state management.
RISC-V:
* Redirect AMO load/store misaligned traps to KVM guest
* Trap-n-emulate AIA in-kernel irqchip for KVM guest
* Svnapot support for KVM Guest
s390:
* New uvdevice secret API
* CMM selftest and fixes
* fix racy access to target CPU for diag 9c
x86:
* Fix missing/incorrect #GP checks on ENCLS
* Use standard mmu_notifier hooks for handling APIC access page
* Drop now unnecessary TR/TSS load after VM-Exit on AMD
* Print more descriptive information about the status of SEV and SEV-ES during
module load
* Add a test for splitting and reconstituting hugepages during and after
dirty logging
* Add support for CPU pinning in demand paging test
* Add support for AMD PerfMonV2, with a variety of cleanups and minor fixes
included along the way
* Add a "nx_huge_pages=never" option to effectively avoid creating NX hugepage
recovery threads (because nx_huge_pages=off can be toggled at runtime)
* Move handling of PAT out of MTRR code and dedup SVM+VMX code
* Fix output of PIC poll command emulation when there's an interrupt
* Add a maintainer's handbook to document KVM x86 processes, preferred coding
style, testing expectations, etc.
* Misc cleanups, fixes and comments
Generic:
* Miscellaneous bugfixes and cleanups
Selftests:
* Generate dependency files so that partial rebuilds work as expected
-----BEGIN PGP SIGNATURE-----
iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmSgHrIUHHBib256aW5p
QHJlZGhhdC5jb20ACgkQv/vSX3jHroORcAf+KkBlXwQMf+Q0Hy6Mfe0OtkKmh0Ae
6HJ6dsuMfOHhWv5kgukh+qvuGUGzHq+gpVKmZg2yP3h3cLHOLUAYMCDm+rjXyjsk
F4DbnJLfxq43Pe9PHRKFxxSecRcRYCNox0GD5UYL4PLKcH0FyfQrV+HVBK+GI8L3
FDzUcyJkR12Lcj1qf++7fsbzfOshL0AJPmidQCoc6wkLJpUEr/nYUqlI1Kx3YNuQ
LKmxFHS4l4/O/px3GKNDrLWDbrVlwciGIa3GZLS52PZdW3mAqT+cqcPcYK6SW71P
m1vE80VbNELX5q3YSRoOXtedoZ3Pk97LEmz/xQAsJ/jri0Z5Syk0Ok0m/Q==
=AMXp
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"ARM64:
- Eager page splitting optimization for dirty logging, optionally
allowing for a VM to avoid the cost of hugepage splitting in the
stage-2 fault path.
- Arm FF-A proxy for pKVM, allowing a pKVM host to safely interact
with services that live in the Secure world. pKVM intervenes on
FF-A calls to guarantee the host doesn't misuse memory donated to
the hyp or a pKVM guest.
- Support for running the split hypervisor with VHE enabled, known as
'hVHE' mode. This is extremely useful for testing the split
hypervisor on VHE-only systems, and paves the way for new use cases
that depend on having two TTBRs available at EL2.
- Generalized framework for configurable ID registers from userspace.
KVM/arm64 currently prevents arbitrary CPU feature set
configuration from userspace, but the intent is to relax this
limitation and allow userspace to select a feature set consistent
with the CPU.
- Enable the use of Branch Target Identification (FEAT_BTI) in the
hypervisor.
- Use a separate set of pointer authentication keys for the
hypervisor when running in protected mode, as the host is untrusted
at runtime.
- Ensure timer IRQs are consistently released in the init failure
paths.
- Avoid trapping CTR_EL0 on systems with Enhanced Virtualization
Traps (FEAT_EVT), as it is a register commonly read from userspace.
- Erratum workaround for the upcoming AmpereOne part, which has
broken hardware A/D state management.
RISC-V:
- Redirect AMO load/store misaligned traps to KVM guest
- Trap-n-emulate AIA in-kernel irqchip for KVM guest
- Svnapot support for KVM Guest
s390:
- New uvdevice secret API
- CMM selftest and fixes
- fix racy access to target CPU for diag 9c
x86:
- Fix missing/incorrect #GP checks on ENCLS
- Use standard mmu_notifier hooks for handling APIC access page
- Drop now unnecessary TR/TSS load after VM-Exit on AMD
- Print more descriptive information about the status of SEV and
SEV-ES during module load
- Add a test for splitting and reconstituting hugepages during and
after dirty logging
- Add support for CPU pinning in demand paging test
- Add support for AMD PerfMonV2, with a variety of cleanups and minor
fixes included along the way
- Add a "nx_huge_pages=never" option to effectively avoid creating NX
hugepage recovery threads (because nx_huge_pages=off can be toggled
at runtime)
- Move handling of PAT out of MTRR code and dedup SVM+VMX code
- Fix output of PIC poll command emulation when there's an interrupt
- Add a maintainer's handbook to document KVM x86 processes,
preferred coding style, testing expectations, etc.
- Misc cleanups, fixes and comments
Generic:
- Miscellaneous bugfixes and cleanups
Selftests:
- Generate dependency files so that partial rebuilds work as
expected"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (153 commits)
Documentation/process: Add a maintainer handbook for KVM x86
Documentation/process: Add a label for the tip tree handbook's coding style
KVM: arm64: Fix misuse of KVM_ARM_VCPU_POWER_OFF bit index
RISC-V: KVM: Remove unneeded semicolon
RISC-V: KVM: Allow Svnapot extension for Guest/VM
riscv: kvm: define vcpu_sbi_ext_pmu in header
RISC-V: KVM: Expose IMSIC registers as attributes of AIA irqchip
RISC-V: KVM: Add in-kernel virtualization of AIA IMSIC
RISC-V: KVM: Expose APLIC registers as attributes of AIA irqchip
RISC-V: KVM: Add in-kernel emulation of AIA APLIC
RISC-V: KVM: Implement device interface for AIA irqchip
RISC-V: KVM: Skeletal in-kernel AIA irqchip support
RISC-V: KVM: Set kvm_riscv_aia_nr_hgei to zero
RISC-V: KVM: Add APLIC related defines
RISC-V: KVM: Add IMSIC related defines
RISC-V: KVM: Implement guest external interrupt line management
KVM: x86: Remove PRIx* definitions as they are solely for user space
s390/uv: Update query for secret-UVCs
s390/uv: replace scnprintf with sysfs_emit
s390/uvdevice: Add 'Lock Secret Store' UVC
...
Moving the invocation of arch_cpu_finalize_init() earlier in the boot
process caused a boot regression on IBT enabled system.
The root cause is not the move of arch_cpu_finalize_init() itself. The
system fails to boot because the subsequent efi_enter_virtual_mode() code
has a non-IBT safe EFI call inside. This was never noticed because IBT
was enabled after the EFI initialization.
Switching the EFI call to use the IBT safe wrapper cures the problem.
-----BEGIN PGP SIGNATURE-----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=T/8G
-----END PGP SIGNATURE-----
Merge tag 'x86-urgent-2023-07-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Thomas Gleixner:
"A single regression fix for x86:
Moving the invocation of arch_cpu_finalize_init() earlier in the boot
process caused a boot regression on IBT enabled system.
The root cause is not the move of arch_cpu_finalize_init() itself. The
system fails to boot because the subsequent efi_enter_virtual_mode()
code has a non-IBT safe EFI call inside. This was not noticed before
because IBT was enabled after the EFI initialization.
Switching the EFI call to use the IBT safe wrapper cures the problem"
* tag 'x86-urgent-2023-07-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/efi: Make efi_set_virtual_address_map IBT safe
- Drop manual TR/TSS load after VM-Exit now that KVM uses VMLOAD for host state
- Fix a not-yet-problematic missing call to trace_kvm_exit() for VM-Exits that
are handled in the fastpath
- Print more descriptive information about the status of SEV and SEV-ES during
module load
- Assert that misc_cg_set_capacity() doesn't fail to avoid should-be-impossible
memory leaks
-----BEGIN PGP SIGNATURE-----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=rcFn
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-svm-6.5' of https://github.com/kvm-x86/linux into HEAD
KVM SVM changes for 6.5:
- Drop manual TR/TSS load after VM-Exit now that KVM uses VMLOAD for host state
- Fix a not-yet-problematic missing call to trace_kvm_exit() for VM-Exits that
are handled in the fastpath
- Print more descriptive information about the status of SEV and SEV-ES during
module load
- Assert that misc_cg_set_capacity() doesn't fail to avoid should-be-impossible
memory leaks
- Add support for AMD PerfMonV2, with a variety of cleanups and minor fixes
included along the way
-----BEGIN PGP SIGNATURE-----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=MwqV
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-pmu-6.5' of https://github.com/kvm-x86/linux into HEAD
KVM x86/pmu changes for 6.5:
- Add support for AMD PerfMonV2, with a variety of cleanups and minor fixes
included along the way
- Add back a comment about the subtle side effect of try_cmpxchg64() in
tdp_mmu_set_spte_atomic()
- Add an assertion in __kvm_mmu_invalidate_addr() to verify that the target
KVM MMU is the current MMU
- Add a "never" option to effectively avoid creating NX hugepage recovery
threads
-----BEGIN PGP SIGNATURE-----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=FM8H
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-mmu-6.5' of https://github.com/kvm-x86/linux into HEAD
KVM x86/mmu changes for 6.5:
- Add back a comment about the subtle side effect of try_cmpxchg64() in
tdp_mmu_set_spte_atomic()
- Add an assertion in __kvm_mmu_invalidate_addr() to verify that the target
KVM MMU is the current MMU
- Add a "never" option to effectively avoid creating NX hugepage recovery
threads
- Move handling of PAT out of MTRR code and dedup SVM+VMX code
- Fix output of PIC poll command emulation when there's an interrupt
- Fix a longstanding bug in the reporting of the number of entries returned by
KVM_GET_CPUID2
- Add a maintainer's handbook to document KVM x86 processes, preferred coding
style, testing expectations, etc.
- Misc cleanups
-----BEGIN PGP SIGNATURE-----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=D0BH
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-misc-6.5' of https://github.com/kvm-x86/linux into HEAD
KVM x86 changes for 6.5:
* Move handling of PAT out of MTRR code and dedup SVM+VMX code
* Fix output of PIC poll command emulation when there's an interrupt
* Add a maintainer's handbook to document KVM x86 processes, preferred coding
style, testing expectations, etc.
* Misc cleanups
Although some more stuff is brewing, the EFI changes that are ready for
mainline are few, so not a lot to pull this cycle:
- improve the PCI DMA paranoia logic in the EFI stub
- some constification changes
- add statfs support to efivarfs
- allow user space to enumerate updatable firmware resources without
CAP_SYS_ADMIN
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQQQm/3uucuRGn1Dmh0wbglWLn0tXAUCZJ1jIwAKCRAwbglWLn0t
XDs8AP9PAAWIgukyXkYpoxabaQQK1Pqw6Zv63XAcNYBHa4zjHwD/UTcYviQIlI0B
Rfj4i8pDQVVfReSI+lKWvhXfRQ5Qbgs=
=w6zX
-----END PGP SIGNATURE-----
Merge tag 'efi-next-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
"Although some more stuff is brewing, the EFI changes that are ready
for mainline are few this cycle:
- improve the PCI DMA paranoia logic in the EFI stub
- some constification changes
- add statfs support to efivarfs
- allow user space to enumerate updatable firmware resources without
CAP_SYS_ADMIN"
* tag 'efi-next-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi/libstub: Disable PCI DMA before grabbing the EFI memory map
efi/esrt: Allow ESRT access without CAP_SYS_ADMIN
efivarfs: expose used and total size
efi: make kobj_type structure constant
efi: x86: make kobj_type structure constant
- Add new feature to have function graph tracer record the return value.
Adds a new option: funcgraph-retval ; when set, will show the return
value of a function in the function graph tracer.
- Also add the option: funcgraph-retval-hex where if it is not set, and
the return value is an error code, then it will return the decimal of
the error code, otherwise it still reports the hex value.
- Add the file /sys/kernel/tracing/osnoise/per_cpu/cpu<cpu>/timerlat_fd
That when a application opens it, it becomes the task that the timer lat
tracer traces. The application can also read this file to find out how
it's being interrupted.
- Add the file /sys/kernel/tracing/available_filter_functions_addrs
that works just the same as available_filter_functions but also shows
the addresses of the functions like kallsyms, except that it gives the
address of where the fentry/mcount jump/nop is. This is used by BPF to
make it easier to attach BPF programs to ftrace hooks.
- Replace strlcpy with strscpy in the tracing boot code.
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZJy6ixQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qnzRAPsEI2YgjaJSHnuPoGRHbrNil6pq66wY
LYaLizGI4Jv9BwEAqdSdcYcMiWo1SFBAO8QxEDM++BX3zrRyVgW8ahaTNgs=
=TF0C
-----END PGP SIGNATURE-----
Merge tag 'trace-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- Add new feature to have function graph tracer record the return
value. Adds a new option: funcgraph-retval ; when set, will show the
return value of a function in the function graph tracer.
- Also add the option: funcgraph-retval-hex where if it is not set, and
the return value is an error code, then it will return the decimal of
the error code, otherwise it still reports the hex value.
- Add the file /sys/kernel/tracing/osnoise/per_cpu/cpu<cpu>/timerlat_fd
That when a application opens it, it becomes the task that the timer
lat tracer traces. The application can also read this file to find
out how it's being interrupted.
- Add the file /sys/kernel/tracing/available_filter_functions_addrs
that works just the same as available_filter_functions but also shows
the addresses of the functions like kallsyms, except that it gives
the address of where the fentry/mcount jump/nop is. This is used by
BPF to make it easier to attach BPF programs to ftrace hooks.
- Replace strlcpy with strscpy in the tracing boot code.
* tag 'trace-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix warnings when building htmldocs for function graph retval
riscv: ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL
tracing/boot: Replace strlcpy with strscpy
tracing/timerlat: Add user-space interface
tracing/osnoise: Skip running osnoise if all instances are off
tracing/osnoise: Switch from PF_NO_SETAFFINITY to migrate_disable
ftrace: Show all functions with addresses in available_filter_functions_addrs
selftests/ftrace: Add funcgraph-retval test case
LoongArch: ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL
x86/ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL
arm64: ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL
tracing: Add documentation for funcgraph-retval and funcgraph-retval-hex
function_graph: Support recording and printing the return value of function
fgraph: Add declaration of "struct fgraph_ret_regs"
Niklāvs reported a boot regression on an Alderlake machine and bisected it
to commit 9df9d2f047 ("init: Invoke arch_cpu_finalize_init() earlier").
By moving the invocation of arch_cpu_finalize_init() further down he
identified that efi_enter_virtual_mode() is the function which causes the
boot hang.
The main difference of the earlier invocation is that the boot CPU is
already fully initialized and mitigations and alternatives are applied.
But the only really interesting change turned out to be IBT, which is now
enabled before efi_enter_virtual_mode(). "ibt=off" on the kernel command
line cured the problem.
Inspection of the involved calls in efi_enter_virtual_mode() unearthed that
efi_set_virtual_address_map() is the only place in the kernel which invokes
an EFI call without the IBT safe wrapper. This went obviously unnoticed so
far as IBT was enabled later.
Use arch_efi_call_virt() instead of efi_call() to cure that.
Fixes: fe379fa4d1 ("x86/ibt: Disable IBT around firmware")
Fixes: 9df9d2f047 ("init: Invoke arch_cpu_finalize_init() earlier")
Reported-by: Niklāvs Koļesņikovs <pinkflames.linux@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217602
Link: https://lore.kernel.org/r/87jzvm12q0.ffs@tglx
core:
- replace strlcpy with strscpy
- EDID changes to support further conversion to struct drm_edid
- Move i915 DSC parameter code to common DRM helpers
- Add Colorspace functionality
aperture:
- ignore framebuffers with non-primary devices
fbdev:
- use fbdev i/o helpers
- add Kconfig options for fb_ops helpers
- use new fb io helpers directly in drivers
sysfs:
- export DRM connector ID
scheduler:
- Avoid an infinite loop
ttm:
- store function table in .rodata
- Add query for TTM mem limit
- Add NUMA awareness to pools
- Export ttm_pool_fini()
bridge:
- fsl-ldb: support i.MX6SX
- lt9211, lt9611: remove blanking packets
- tc358768: implement input bus formats, devm cleanups
- ti-snd65dsi86: implement wait_hpd_asserted
- analogix: fix endless probe loop
- samsung-dsim: support swapped clock, fix enabling, support var clock
- display-connector: Add support for external power supply
- imx: Fix module linking
- tc358762: Support reset GPIO
panel:
- nt36523: Support Lenovo J606F
- st7703: Support Anbernic RG353V-V2
- InnoLux G070ACE-L01 support
- boe-tv101wum-nl6: Improve initialization
- sharp-ls043t1le001: Mode fixes
- simple: BOE EV121WXM-N10-1850, S6D7AA0
- Ampire AM-800480L1TMQW-T00H
- Rocktech RK043FN48H
- Starry himax83102-j02
- Starry ili9882t
amdgpu:
- add new ctx query flag to handle reset better
- add new query/set shadow buffer for rdna3
- DCN 3.2/3.1.x/3.0.x updates
- Enable DC_FP on loongarch
- PCIe fix for RDNA2
- improve DC FAMS/SubVP support for better power management
- partition support for lots of engines
- Take NUMA into account when allocating memory
- Add new DRM_AMDGPU_WERROR config parameter to help with CI
- Initial SMU13 overdrive support
- Add support for new colorspace KMS API
- W=1 fixes
amdkfd:
- Query TTM mem limit rather than hardcoding it
- GC 9.4.3 partition support
- Handle NUMA for partitions
- Add debugger interface for enabling gdb
- Add KFD event age tracking
radeon:
- Fix possible UAF
i915:
- new getparam for PXP support
- GSC/MEI proxy driver
- Meteorlake display enablement
- avoid clearing preallocated framebuffers with TTM
- implement framebuffer mmap support
- Disable sampler indirect state in bindless heap
- Enable fdinfo for GuC backends
- GuC loading and firmware table handling fixes
- Various refactors for multi-tile enablement
- Define MOCS and PAT tables for MTL
- GSC/MEI support for Meteorlake
- PMU multi-tile support
- Large driver kernel doc cleanup
- Allow VRR toggling and arbitrary refresh rates
- Support async flips on linear buffers on display ver 12+
- Expose CRTC CTM property on ILK/SNB/VLV
- New debugfs for display clock frequencies
- Hotplug refactoring
- Display refactoring
- I915_GEM_CREATE_EXT_SET_PAT for Mesa on Meteorlake
- Use large rings for compute contexts
- HuC loading for MTL
- Allow user to set cache at BO creation
- MTL powermanagement enhancements
- Switch to dedicated workqueues to stop using flush_scheduled_work()
- Move display runtime init under display/
- Remove 10bit gamma on desktop gen3 parts, they don't support it
habanalabs:
- uapi: return 0 for user queries if there was a h/w or f/w error
- Add pci health check when we lose connection with the firmware. This can be used to
distinguish between pci link down and firmware getting stuck.
- Add more info to the error print when TPC interrupt occur.
- Firmware fixes
msm:
- Adreno A660 bindings
- SM8350 MDSS bindings fix
- Added support for DPU on sm6350 and sm6375 platforms
- Implemented tearcheck support to support vsync on SM150 and newer platforms
- Enabled missing features (DSPP, DSC, split display) on sc8180x, sc8280xp, sm8450
- Added support for DSI and 28nm DSI PHY on MSM8226 platform
- Added support for DSI on sm6350 and sm6375 platforms
- Added support for display controller on MSM8226 platform
- A690 GPU support
- Move cmdstream dumping out of fence signaling path
- a610 support
- Support for a6xx devices without GMU
nouveau:
- NULL ptr before deref fixes
armada:
- implement fbdev emulation as client
sun4i:
- fix mipi-dsi dotclock
- release clocks
vc4:
- rgb range toggle property
- BT601 / BT2020 HDMI support
vkms:
- convert to drmm helpers
- add reflection and rotation support
- fix rgb565 conversion
gma500:
- fix iomem access
shmobile:
- support renesas soc platform
- enable fbdev
mxsfb:
- Add support for i.MX93 LCDIF
stm:
- dsi: Use devm_ helper
- ltdc: Fix potential invalid pointer deref
renesas:
- Group drivers in renesas subdirectory to prepare for new platform
- Drop deprecated R-Car H3 ES1.x support
meson:
- Add support for MIPI DSI displays
virtio:
- add sync object support
mediatek:
- Add display binding document for MT6795
-----BEGIN PGP SIGNATURE-----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=FmUA
-----END PGP SIGNATURE-----
Merge tag 'drm-next-2023-06-29' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
"There is one set of patches to misc for a i915 gsc/mei proxy driver.
Otherwise it's mostly amdgpu/i915/msm, lots of hw enablement and lots
of refactoring.
core:
- replace strlcpy with strscpy
- EDID changes to support further conversion to struct drm_edid
- Move i915 DSC parameter code to common DRM helpers
- Add Colorspace functionality
aperture:
- ignore framebuffers with non-primary devices
fbdev:
- use fbdev i/o helpers
- add Kconfig options for fb_ops helpers
- use new fb io helpers directly in drivers
sysfs:
- export DRM connector ID
scheduler:
- Avoid an infinite loop
ttm:
- store function table in .rodata
- Add query for TTM mem limit
- Add NUMA awareness to pools
- Export ttm_pool_fini()
bridge:
- fsl-ldb: support i.MX6SX
- lt9211, lt9611: remove blanking packets
- tc358768: implement input bus formats, devm cleanups
- ti-snd65dsi86: implement wait_hpd_asserted
- analogix: fix endless probe loop
- samsung-dsim: support swapped clock, fix enabling, support var
clock
- display-connector: Add support for external power supply
- imx: Fix module linking
- tc358762: Support reset GPIO
panel:
- nt36523: Support Lenovo J606F
- st7703: Support Anbernic RG353V-V2
- InnoLux G070ACE-L01 support
- boe-tv101wum-nl6: Improve initialization
- sharp-ls043t1le001: Mode fixes
- simple: BOE EV121WXM-N10-1850, S6D7AA0
- Ampire AM-800480L1TMQW-T00H
- Rocktech RK043FN48H
- Starry himax83102-j02
- Starry ili9882t
amdgpu:
- add new ctx query flag to handle reset better
- add new query/set shadow buffer for rdna3
- DCN 3.2/3.1.x/3.0.x updates
- Enable DC_FP on loongarch
- PCIe fix for RDNA2
- improve DC FAMS/SubVP support for better power management
- partition support for lots of engines
- Take NUMA into account when allocating memory
- Add new DRM_AMDGPU_WERROR config parameter to help with CI
- Initial SMU13 overdrive support
- Add support for new colorspace KMS API
- W=1 fixes
amdkfd:
- Query TTM mem limit rather than hardcoding it
- GC 9.4.3 partition support
- Handle NUMA for partitions
- Add debugger interface for enabling gdb
- Add KFD event age tracking
radeon:
- Fix possible UAF
i915:
- new getparam for PXP support
- GSC/MEI proxy driver
- Meteorlake display enablement
- avoid clearing preallocated framebuffers with TTM
- implement framebuffer mmap support
- Disable sampler indirect state in bindless heap
- Enable fdinfo for GuC backends
- GuC loading and firmware table handling fixes
- Various refactors for multi-tile enablement
- Define MOCS and PAT tables for MTL
- GSC/MEI support for Meteorlake
- PMU multi-tile support
- Large driver kernel doc cleanup
- Allow VRR toggling and arbitrary refresh rates
- Support async flips on linear buffers on display ver 12+
- Expose CRTC CTM property on ILK/SNB/VLV
- New debugfs for display clock frequencies
- Hotplug refactoring
- Display refactoring
- I915_GEM_CREATE_EXT_SET_PAT for Mesa on Meteorlake
- Use large rings for compute contexts
- HuC loading for MTL
- Allow user to set cache at BO creation
- MTL powermanagement enhancements
- Switch to dedicated workqueues to stop using flush_scheduled_work()
- Move display runtime init under display/
- Remove 10bit gamma on desktop gen3 parts, they don't support it
habanalabs:
- uapi: return 0 for user queries if there was a h/w or f/w error
- Add pci health check when we lose connection with the firmware.
This can be used to distinguish between pci link down and firmware
getting stuck.
- Add more info to the error print when TPC interrupt occur.
- Firmware fixes
msm:
- Adreno A660 bindings
- SM8350 MDSS bindings fix
- Added support for DPU on sm6350 and sm6375 platforms
- Implemented tearcheck support to support vsync on SM150 and newer
platforms
- Enabled missing features (DSPP, DSC, split display) on sc8180x,
sc8280xp, sm8450
- Added support for DSI and 28nm DSI PHY on MSM8226 platform
- Added support for DSI on sm6350 and sm6375 platforms
- Added support for display controller on MSM8226 platform
- A690 GPU support
- Move cmdstream dumping out of fence signaling path
- a610 support
- Support for a6xx devices without GMU
nouveau:
- NULL ptr before deref fixes
armada:
- implement fbdev emulation as client
sun4i:
- fix mipi-dsi dotclock
- release clocks
vc4:
- rgb range toggle property
- BT601 / BT2020 HDMI support
vkms:
- convert to drmm helpers
- add reflection and rotation support
- fix rgb565 conversion
gma500:
- fix iomem access
shmobile:
- support renesas soc platform
- enable fbdev
mxsfb:
- Add support for i.MX93 LCDIF
stm:
- dsi: Use devm_ helper
- ltdc: Fix potential invalid pointer deref
renesas:
- Group drivers in renesas subdirectory to prepare for new platform
- Drop deprecated R-Car H3 ES1.x support
meson:
- Add support for MIPI DSI displays
virtio:
- add sync object support
mediatek:
- Add display binding document for MT6795"
* tag 'drm-next-2023-06-29' of git://anongit.freedesktop.org/drm/drm: (1791 commits)
drm/i915: Fix a NULL vs IS_ERR() bug
drm/i915: make i915_drm_client_fdinfo() reference conditional again
drm/i915/huc: Fix missing error code in intel_huc_init()
drm/i915/gsc: take a wakeref for the proxy-init-completion check
drm/msm/a6xx: Add A610 speedbin support
drm/msm/a6xx: Add A619_holi speedbin support
drm/msm/a6xx: Use adreno_is_aXYZ macros in speedbin matching
drm/msm/a6xx: Use "else if" in GPU speedbin rev matching
drm/msm/a6xx: Fix some A619 tunables
drm/msm/a6xx: Add A610 support
drm/msm/a6xx: Add support for A619_holi
drm/msm/adreno: Disable has_cached_coherent in GMU wrapper configurations
drm/msm/a6xx: Introduce GMU wrapper support
drm/msm/a6xx: Move CX GMU power counter enablement to hw_init
drm/msm/a6xx: Extend and explain UBWC config
drm/msm/a6xx: Remove both GBIF and RBBM GBIF halt on hw init
drm/msm/a6xx: Add a helper for software-resetting the GPU
drm/msm/a6xx: Improve a6xx_bus_clear_pending_transactions()
drm/msm/a6xx: Move a6xx_bus_clear_pending_transactions to a6xx_gpu
drm/msm/a6xx: Move force keepalive vote removal to a6xx_gmu_force_off()
...
This modifies our user mode stack expansion code to always take the
mmap_lock for writing before modifying the VM layout.
It's actually something we always technically should have done, but
because we didn't strictly need it, we were being lazy ("opportunistic"
sounds so much better, doesn't it?) about things, and had this hack in
place where we would extend the stack vma in-place without doing the
proper locking.
And it worked fine. We just needed to change vm_start (or, in the case
of grow-up stacks, vm_end) and together with some special ad-hoc locking
using the anon_vma lock and the mm->page_table_lock, it all was fairly
straightforward.
That is, it was all fine until Ruihan Li pointed out that now that the
vma layout uses the maple tree code, we *really* don't just change
vm_start and vm_end any more, and the locking really is broken. Oops.
It's not actually all _that_ horrible to fix this once and for all, and
do proper locking, but it's a bit painful. We have basically three
different cases of stack expansion, and they all work just a bit
differently:
- the common and obvious case is the page fault handling. It's actually
fairly simple and straightforward, except for the fact that we have
something like 24 different versions of it, and you end up in a maze
of twisty little passages, all alike.
- the simplest case is the execve() code that creates a new stack.
There are no real locking concerns because it's all in a private new
VM that hasn't been exposed to anybody, but lockdep still can end up
unhappy if you get it wrong.
- and finally, we have GUP and page pinning, which shouldn't really be
expanding the stack in the first place, but in addition to execve()
we also use it for ptrace(). And debuggers do want to possibly access
memory under the stack pointer and thus need to be able to expand the
stack as a special case.
None of these cases are exactly complicated, but the page fault case in
particular is just repeated slightly differently many many times. And
ia64 in particular has a fairly complicated situation where you can have
both a regular grow-down stack _and_ a special grow-up stack for the
register backing store.
So to make this slightly more manageable, the bulk of this series is to
first create a helper function for the most common page fault case, and
convert all the straightforward architectures to it.
Thus the new 'lock_mm_and_find_vma()' helper function, which ends up
being used by x86, arm, powerpc, mips, riscv, alpha, arc, csky, hexagon,
loongarch, nios2, sh, sparc32, and xtensa. So we not only convert more
than half the architectures, we now have more shared code and avoid some
of those twisty little passages.
And largely due to this common helper function, the full diffstat of
this series ends up deleting more lines than it adds.
That still leaves eight architectures (ia64, m68k, microblaze, openrisc,
parisc, s390, sparc64 and um) that end up doing 'expand_stack()'
manually because they are doing something slightly different from the
normal pattern. Along with the couple of special cases in execve() and
GUP.
So there's a couple of patches that first create 'locked' helper
versions of the stack expansion functions, so that there's a obvious
path forward in the conversion. The execve() case is then actually
pretty simple, and is a nice cleanup from our old "grow-up stackls are
special, because at execve time even they grow down".
The #ifdef CONFIG_STACK_GROWSUP in that code just goes away, because
it's just more straightforward to write out the stack expansion there
manually, instead od having get_user_pages_remote() do it for us in some
situations but not others and have to worry about locking rules for GUP.
And the final step is then to just convert the remaining odd cases to a
new world order where 'expand_stack()' is called with the mmap_lock held
for reading, but where it might drop it and upgrade it to a write, only
to return with it held for reading (in the success case) or with it
completely dropped (in the failure case).
In the process, we remove all the stack expansion from GUP (where
dropping the lock wouldn't be ok without special rules anyway), and add
it in manually to __access_remote_vm() for ptrace().
Thanks to Adrian Glaubitz and Frank Scheiner who tested the ia64 cases.
Everything else here felt pretty straightforward, but the ia64 rules for
stack expansion are really quite odd and very different from everything
else. Also thanks to Vegard Nossum who caught me getting one of those
odd conditions entirely the wrong way around.
Anyway, I think I want to actually move all the stack expansion code to
a whole new file of its own, rather than have it split up between
mm/mmap.c and mm/memory.c, but since this will have to be backported to
the initial maple tree vma introduction anyway, I tried to keep the
patches _fairly_ minimal.
Also, while I don't think it's valid to expand the stack from GUP, the
final patch in here is a "warn if some crazy GUP user wants to try to
expand the stack" patch. That one will be reverted before the final
release, but it's left to catch any odd cases during the merge window
and release candidates.
Reported-by: Ruihan Li <lrh2000@pku.edu.cn>
* branch 'expand-stack':
gup: add warning if some caller would seem to want stack expansion
mm: always expand the stack with the mmap write lock held
execve: expand new process stack manually ahead of time
mm: make find_extend_vma() fail if write lock not held
powerpc/mm: convert coprocessor fault to lock_mm_and_find_vma()
mm/fault: convert remaining simple cases to lock_mm_and_find_vma()
arm/mm: Convert to using lock_mm_and_find_vma()
riscv/mm: Convert to using lock_mm_and_find_vma()
mips/mm: Convert to using lock_mm_and_find_vma()
powerpc/mm: Convert to using lock_mm_and_find_vma()
arm64/mm: Convert to using lock_mm_and_find_vma()
mm: make the page fault mmap locking killable
mm: introduce new 'lock_mm_and_find_vma()' page fault helper
top-level directories.
- Douglas Anderson has added a new "buddy" mode to the hardlockup
detector. It permits the detector to work on architectures which
cannot provide the required interrupts, by having CPUs periodically
perform checks on other CPUs.
- Zhen Lei has enhanced kexec's ability to support two crash regions.
- Petr Mladek has done a lot of cleanup on the hard lockup detector's
Kconfig entries.
- And the usual bunch of singleton patches in various places.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZJelTAAKCRDdBJ7gKXxA
juDkAP0VXWynzkXoojdS/8e/hhi+htedmQ3v2dLZD+vBrctLhAEA7rcH58zAVoWa
2ejqO6wDrRGUC7JQcO9VEjT0nv73UwU=
=F293
-----END PGP SIGNATURE-----
Merge tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-mm updates from Andrew Morton:
- Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in top-level
directories
- Douglas Anderson has added a new "buddy" mode to the hardlockup
detector. It permits the detector to work on architectures which
cannot provide the required interrupts, by having CPUs periodically
perform checks on other CPUs
- Zhen Lei has enhanced kexec's ability to support two crash regions
- Petr Mladek has done a lot of cleanup on the hard lockup detector's
Kconfig entries
- And the usual bunch of singleton patches in various places
* tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (72 commits)
kernel/time/posix-stubs.c: remove duplicated include
ocfs2: remove redundant assignment to variable bit_off
watchdog/hardlockup: fix typo in config HARDLOCKUP_DETECTOR_PREFER_BUDDY
powerpc: move arch_trigger_cpumask_backtrace from nmi.h to irq.h
devres: show which resource was invalid in __devm_ioremap_resource()
watchdog/hardlockup: define HARDLOCKUP_DETECTOR_ARCH
watchdog/sparc64: define HARDLOCKUP_DETECTOR_SPARC64
watchdog/hardlockup: make HAVE_NMI_WATCHDOG sparc64-specific
watchdog/hardlockup: declare arch_touch_nmi_watchdog() only in linux/nmi.h
watchdog/hardlockup: make the config checks more straightforward
watchdog/hardlockup: sort hardlockup detector related config values a logical way
watchdog/hardlockup: move SMP barriers from common code to buddy code
watchdog/buddy: simplify the dependency for HARDLOCKUP_DETECTOR_PREFER_BUDDY
watchdog/buddy: don't copy the cpumask in watchdog_next_cpu()
watchdog/buddy: cleanup how watchdog_buddy_check_hardlockup() is called
watchdog/hardlockup: remove softlockup comment in touch_nmi_watchdog()
watchdog/hardlockup: in watchdog_hardlockup_check() use cpumask_copy()
watchdog/hardlockup: don't use raw_cpu_ptr() in watchdog_hardlockup_kick()
watchdog/hardlockup: HAVE_NMI_WATCHDOG must implement watchdog_hardlockup_probe()
watchdog/hardlockup: keep kernel.nmi_watchdog sysctl as 0444 if probe fails
...
- Yosry has also eliminated cgroup's atomic rstat flushing.
- Nhat Pham adds the new cachestat() syscall. It provides userspace
with the ability to query pagecache status - a similar concept to
mincore() but more powerful and with improved usability.
- Mel Gorman provides more optimizations for compaction, reducing the
prevalence of page rescanning.
- Lorenzo Stoakes has done some maintanance work on the get_user_pages()
interface.
- Liam Howlett continues with cleanups and maintenance work to the maple
tree code. Peng Zhang also does some work on maple tree.
- Johannes Weiner has done some cleanup work on the compaction code.
- David Hildenbrand has contributed additional selftests for
get_user_pages().
- Thomas Gleixner has contributed some maintenance and optimization work
for the vmalloc code.
- Baolin Wang has provided some compaction cleanups,
- SeongJae Park continues maintenance work on the DAMON code.
- Huang Ying has done some maintenance on the swap code's usage of
device refcounting.
- Christoph Hellwig has some cleanups for the filemap/directio code.
- Ryan Roberts provides two patch series which yield some
rationalization of the kernel's access to pte entries - use the provided
APIs rather than open-coding accesses.
- Lorenzo Stoakes has some fixes to the interaction between pagecache
and directio access to file mappings.
- John Hubbard has a series of fixes to the MM selftesting code.
- ZhangPeng continues the folio conversion campaign.
- Hugh Dickins has been working on the pagetable handling code, mainly
with a view to reducing the load on the mmap_lock.
- Catalin Marinas has reduced the arm64 kmalloc() minimum alignment from
128 to 8.
- Domenico Cerasuolo has improved the zswap reclaim mechanism by
reorganizing the LRU management.
- Matthew Wilcox provides some fixups to make gfs2 work better with the
buffer_head code.
- Vishal Moola also has done some folio conversion work.
- Matthew Wilcox has removed the remnants of the pagevec code - their
functionality is migrated over to struct folio_batch.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZJejewAKCRDdBJ7gKXxA
joggAPwKMfT9lvDBEUnJagY7dbDPky1cSYZdJKxxM2cApGa42gEA6Cl8HRAWqSOh
J0qXCzqaaN8+BuEyLGDVPaXur9KirwY=
=B7yQ
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm updates from Andrew Morton:
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs
- Yosry has also eliminated cgroup's atomic rstat flushing
- Nhat Pham adds the new cachestat() syscall. It provides userspace
with the ability to query pagecache status - a similar concept to
mincore() but more powerful and with improved usability
- Mel Gorman provides more optimizations for compaction, reducing the
prevalence of page rescanning
- Lorenzo Stoakes has done some maintanance work on the
get_user_pages() interface
- Liam Howlett continues with cleanups and maintenance work to the
maple tree code. Peng Zhang also does some work on maple tree
- Johannes Weiner has done some cleanup work on the compaction code
- David Hildenbrand has contributed additional selftests for
get_user_pages()
- Thomas Gleixner has contributed some maintenance and optimization
work for the vmalloc code
- Baolin Wang has provided some compaction cleanups,
- SeongJae Park continues maintenance work on the DAMON code
- Huang Ying has done some maintenance on the swap code's usage of
device refcounting
- Christoph Hellwig has some cleanups for the filemap/directio code
- Ryan Roberts provides two patch series which yield some
rationalization of the kernel's access to pte entries - use the
provided APIs rather than open-coding accesses
- Lorenzo Stoakes has some fixes to the interaction between pagecache
and directio access to file mappings
- John Hubbard has a series of fixes to the MM selftesting code
- ZhangPeng continues the folio conversion campaign
- Hugh Dickins has been working on the pagetable handling code, mainly
with a view to reducing the load on the mmap_lock
- Catalin Marinas has reduced the arm64 kmalloc() minimum alignment
from 128 to 8
- Domenico Cerasuolo has improved the zswap reclaim mechanism by
reorganizing the LRU management
- Matthew Wilcox provides some fixups to make gfs2 work better with the
buffer_head code
- Vishal Moola also has done some folio conversion work
- Matthew Wilcox has removed the remnants of the pagevec code - their
functionality is migrated over to struct folio_batch
* tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits)
mm/hugetlb: remove hugetlb_set_page_subpool()
mm: nommu: correct the range of mmap_sem_read_lock in task_mem()
hugetlb: revert use of page_cache_next_miss()
Revert "page cache: fix page_cache_next/prev_miss off by one"
mm/vmscan: fix root proactive reclaim unthrottling unbalanced node
mm: memcg: rename and document global_reclaim()
mm: kill [add|del]_page_to_lru_list()
mm: compaction: convert to use a folio in isolate_migratepages_block()
mm: zswap: fix double invalidate with exclusive loads
mm: remove unnecessary pagevec includes
mm: remove references to pagevec
mm: rename invalidate_mapping_pagevec to mapping_try_invalidate
mm: remove struct pagevec
net: convert sunrpc from pagevec to folio_batch
i915: convert i915_gpu_error to use a folio_batch
pagevec: rename fbatch_count()
mm: remove check_move_unevictable_pages()
drm: convert drm_gem_put_pages() to use a folio_batch
i915: convert shmem_sg_free_table() to use a folio_batch
scatterlist: add sg_set_folio()
...
- Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko)
- Convert strreplace() to return string start (Andy Shevchenko)
- Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook)
- Add missing function prototypes seen with W=1 (Arnd Bergmann)
- Fix strscpy() kerndoc typo (Arne Welzel)
- Replace strlcpy() with strscpy() across many subsystems which were
either Acked by respective maintainers or were trivial changes that
went ignored for multiple weeks (Azeem Shaikh)
- Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers)
- Add KUnit tests for strcat()-family
- Enable KUnit tests of FORTIFY wrappers under UML
- Add more complete FORTIFY protections for strlcat()
- Add missed disabling of FORTIFY for all arch purgatories.
- Enable -fstrict-flex-arrays=3 globally
- Tightening UBSAN_BOUNDS when using GCC
- Improve checkpatch to check for strcpy, strncpy, and fake flex arrays
- Improve use of const variables in FORTIFY
- Add requested struct_size_t() helper for types not pointers
- Add __counted_by macro for annotating flexible array size members
-----BEGIN PGP SIGNATURE-----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=s0j1
-----END PGP SIGNATURE-----
Merge tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"There are three areas of note:
A bunch of strlcpy()->strscpy() conversions ended up living in my tree
since they were either Acked by maintainers for me to carry, or got
ignored for multiple weeks (and were trivial changes).
The compiler option '-fstrict-flex-arrays=3' has been enabled
globally, and has been in -next for the entire devel cycle. This
changes compiler diagnostics (though mainly just -Warray-bounds which
is disabled) and potential UBSAN_BOUNDS and FORTIFY _warning_
coverage. In other words, there are no new restrictions, just
potentially new warnings. Any new FORTIFY warnings we've seen have
been fixed (usually in their respective subsystem trees). For more
details, see commit df8fc4e934.
The under-development compiler attribute __counted_by has been added
so that we can start annotating flexible array members with their
associated structure member that tracks the count of flexible array
elements at run-time. It is possible (likely?) that the exact syntax
of the attribute will change before it is finalized, but GCC and Clang
are working together to sort it out. Any changes can be made to the
macro while we continue to add annotations.
As an example of that last case, I have a treewide commit waiting with
such annotations found via Coccinelle:
https://git.kernel.org/linus/adc5b3cb48a049563dc673f348eab7b6beba8a9b
Also see commit dd06e72e68 for more details.
Summary:
- Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko)
- Convert strreplace() to return string start (Andy Shevchenko)
- Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook)
- Add missing function prototypes seen with W=1 (Arnd Bergmann)
- Fix strscpy() kerndoc typo (Arne Welzel)
- Replace strlcpy() with strscpy() across many subsystems which were
either Acked by respective maintainers or were trivial changes that
went ignored for multiple weeks (Azeem Shaikh)
- Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers)
- Add KUnit tests for strcat()-family
- Enable KUnit tests of FORTIFY wrappers under UML
- Add more complete FORTIFY protections for strlcat()
- Add missed disabling of FORTIFY for all arch purgatories.
- Enable -fstrict-flex-arrays=3 globally
- Tightening UBSAN_BOUNDS when using GCC
- Improve checkpatch to check for strcpy, strncpy, and fake flex
arrays
- Improve use of const variables in FORTIFY
- Add requested struct_size_t() helper for types not pointers
- Add __counted_by macro for annotating flexible array size members"
* tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (54 commits)
netfilter: ipset: Replace strlcpy with strscpy
uml: Replace strlcpy with strscpy
um: Use HOST_DIR for mrproper
kallsyms: Replace all non-returning strlcpy with strscpy
sh: Replace all non-returning strlcpy with strscpy
of/flattree: Replace all non-returning strlcpy with strscpy
sparc64: Replace all non-returning strlcpy with strscpy
Hexagon: Replace all non-returning strlcpy with strscpy
kobject: Use return value of strreplace()
lib/string_helpers: Change returned value of the strreplace()
jbd2: Avoid printing outside the boundary of the buffer
checkpatch: Check for 0-length and 1-element arrays
riscv/purgatory: Do not use fortified string functions
s390/purgatory: Do not use fortified string functions
x86/purgatory: Do not use fortified string functions
acpi: Replace struct acpi_table_slit 1-element array with flex-array
clocksource: Replace all non-returning strlcpy with strscpy
string: use __builtin_memcpy() in strlcpy/strlcat
staging: most: Replace all non-returning strlcpy with strscpy
drm/i2c: tda998x: Replace all non-returning strlcpy with strscpy
...
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCZJp4CgAKCRCAXGG7T9hj
vmmpAP4gMe7T2QXWY9VvWgyf97z3AtBx2NdTzLAmArFySzPFtgEAgCHE3yy95bmR
JAX4+q/2QPbFxp0TgJrrxlq5RDn5Ago=
=2HjA
-----END PGP SIGNATURE-----
Merge tag 'for-linus-6.5-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
- three patches adding missing prototypes
- a fix for finding the iBFT in a Xen dom0 for supporting diskless
iSCSI boot
* tag 'for-linus-6.5-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86: xen: add missing prototypes
x86/xen: add prototypes for paravirt mmu functions
iscsi_ibft: Fix finding the iBFT under Xen Dom 0
xen: xen_debug_interrupt prototype to global header
- Build footprint & performance improvements:
- Reduce memory usage with CONFIG_DEBUG_INFO=y
In the worst case of an allyesconfig+CONFIG_DEBUG_INFO=y kernel, DWARF
creates almost 200 million relocations, ballooning objtool's peak heap
usage to 53GB. These patches reduce that to 25GB.
On a distro-type kernel with kernel IBT enabled, they reduce objtool's
peak heap usage from 4.2GB to 2.8GB.
These changes also improve the runtime significantly.
- Debuggability improvements:
- Add the unwind_debug command-line option, for more extend unwinding
debugging output.
- Limit unreachable warnings to once per function
- Add verbose option for disassembling affected functions
- Include backtrace in verbose mode
- Detect missing __noreturn annotations
- Ignore exc_double_fault() __noreturn warnings
- Remove superfluous global_noreturns entries
- Move noreturn function list to separate file
- Add __kunit_abort() to noreturns
- Unwinder improvements:
- Allow stack operations in UNWIND_HINT_UNDEFINED regions
- drm/vmwgfx: Add unwind hints around RBP clobber
- Cleanups:
- Move the x86 entry thunk restore code into thunk functions
- x86/unwind/orc: Use swap() instead of open coding it
- Remove unnecessary/unused variables
- Fixes for modern stack canary handling
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmSaxcoRHG1pbmdvQGtl
cm5lbC5vcmcACgkQEnMQ0APhK1ht5w//f8mBoABct29pS4ib6pDwRZQDoG8fCA7M
+KWjFD1AhX7RsJVEbM4uBUXdSWZD61xxIa8p8LO2jjzE5RyhM+EuNaisKujKqmfj
uQTSnRhIRHMPqqVGK/gQxy1v4+3+12O32XFIJhAPYCp/dpbZJ2yKDsiHjapzZTDy
BM+86hbIyHFmSl5uJcBFHEv6EGhoxwdrrrOxhpao1CqfAUi+uVgamHGwVqx+NtTY
MvOmcy3/0ukHwDLON0MIMu9MSwvnXorD7+RSkYstwAM/k6ao/k78iJ31sOcynpRn
ri0gmfygJsh2bxL4JUlY4ZeTs7PLWkj3i60deePc5u6EyV4JDJ2borUibs5oGoF6
pN0AwbtubLHHhUI/v74B3E6K6ZGvLiEn9dsNTuXsJffD+qU2REb+WLhr4ut+E1Wi
IKWrYh811yBLyOqFEW3XudZTiXSJlgi3eYiCxspEsKw2RIFFt2g6vYcwrIb0Hatw
8R4/jCWk1nc6Wa3RQYsVnhkglAECSKQdDfS7p2e1hNUTjZuess4EEJjSLs8upIQ9
D1bmuUxEzRxVwAZtXYNh0NKe7OtyOrqgsVTQuqxvWXq2CpC7Hqj8piVJWHdBWgHO
0o2OQqjwSrzAtevpAIaYQv9zhPs1hV7CpBgzzqWGXrwJ3vM6YoSRLf0bg+5OkN8I
O4U2xq2OVa8=
=uNnc
-----END PGP SIGNATURE-----
Merge tag 'objtool-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molar:
"Build footprint & performance improvements:
- Reduce memory usage with CONFIG_DEBUG_INFO=y
In the worst case of an allyesconfig+CONFIG_DEBUG_INFO=y kernel,
DWARF creates almost 200 million relocations, ballooning objtool's
peak heap usage to 53GB. These patches reduce that to 25GB.
On a distro-type kernel with kernel IBT enabled, they reduce
objtool's peak heap usage from 4.2GB to 2.8GB.
These changes also improve the runtime significantly.
Debuggability improvements:
- Add the unwind_debug command-line option, for more extend unwinding
debugging output
- Limit unreachable warnings to once per function
- Add verbose option for disassembling affected functions
- Include backtrace in verbose mode
- Detect missing __noreturn annotations
- Ignore exc_double_fault() __noreturn warnings
- Remove superfluous global_noreturns entries
- Move noreturn function list to separate file
- Add __kunit_abort() to noreturns
Unwinder improvements:
- Allow stack operations in UNWIND_HINT_UNDEFINED regions
- drm/vmwgfx: Add unwind hints around RBP clobber
Cleanups:
- Move the x86 entry thunk restore code into thunk functions
- x86/unwind/orc: Use swap() instead of open coding it
- Remove unnecessary/unused variables
Fixes for modern stack canary handling"
* tag 'objtool-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
x86/orc: Make the is_callthunk() definition depend on CONFIG_BPF_JIT=y
objtool: Skip reading DWARF section data
objtool: Free insns when done
objtool: Get rid of reloc->rel[a]
objtool: Shrink elf hash nodes
objtool: Shrink reloc->sym_reloc_entry
objtool: Get rid of reloc->jump_table_start
objtool: Get rid of reloc->addend
objtool: Get rid of reloc->type
objtool: Get rid of reloc->offset
objtool: Get rid of reloc->idx
objtool: Get rid of reloc->list
objtool: Allocate relocs in advance for new rela sections
objtool: Add for_each_reloc()
objtool: Don't free memory in elf_close()
objtool: Keep GElf_Rel[a] structs synced
objtool: Add elf_create_section_pair()
objtool: Add mark_sec_changed()
objtool: Fix reloc_hash size
objtool: Consolidate rel/rela handling
...
- Rework & fix the event forwarding logic by extending the
core interface. This fixes AMD PMU events that have to
be forwarded from the core PMU to the IBS PMU.
- Add self-tests to test AMD IBS invocation via core PMU events
- Clean up Intel FixCntrCtl MSR encoding & handling
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmSayC0RHG1pbmdvQGtl
cm5lbC5vcmcACgkQEnMQ0APhK1jlWxAAqUPtfst1p6H5sSyCBPYo5Y/Rh0SyyqJj
w0YZ8p2nbB/+EmIN3WS1uYhx1/AalTP254q2BgVF4DlDFQA1MlJCmSNJ9HhtzOgt
mbpNKzy50cQCR/iH+s3ldcFsLGhSG07j6w8xeb6BGiABm2JoiZeg6iVU76zRe5A1
iPnjC7qoqjKH+sq8pu32fBClMjzf05/LGMd0MqFuYfl5950xRW61olstjo93XWgK
O5z+5wm5H3MhJ2mzU6x+0C/xurIEQ0zRf6AqLbFp41BbJJJORgTCK746flghiqd5
DiADc7oj9eOqL1X9jFPHgE07T/6QPrMC8BoH64pOcM3PoZ6Iq3zTkUHxAw3qK5j+
kqduxzlVaFLFnf7R/vxUvjMg1PM+qP3pqgCrT+NFUdqsdLgSPxRzt5pAM6aAUwmU
1lhuapESH44RUFZGWrfOwzQE5q/FDmUc2yGyGW2aYDmwkclNjVpnvHEJrQMugI3M
M3/y9a+ErcPDUJfHcodutBDGw9l7VhsxJFMt4ydOTkNbEfZLbi2TzNapui6SKFja
G2efrB/HhrV9nE+21Wfa3uxoKMuJ/UPiGrVr2qyGOnShQpK7sdyGDshO1s6TTPye
OoVf9I0LhewMPap52SU/KDP7GJVPW1BhL/C7w6OSnXxlS5k4lOji7z4Dj2hqXHib
19Jm7BhqZwE=
=xn05
-----END PGP SIGNATURE-----
Merge tag 'perf-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events updates from Ingo Molnar:
- Rework & fix the event forwarding logic by extending the core
interface.
This fixes AMD PMU events that have to be forwarded from the
core PMU to the IBS PMU.
- Add self-tests to test AMD IBS invocation via core PMU events
- Clean up Intel FixCntrCtl MSR encoding & handling
* tag 'perf-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Re-instate the linear PMU search
perf/x86/intel: Define bit macros for FixCntrCtl MSR
perf test: Add selftest to test IBS invocation via core pmu events
perf/core: Remove pmu linear searching code
perf/ibs: Fix interface via core pmu events
perf/core: Rework forwarding of {task|cpu}-clock events
- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double().
The cmpxchg128() family of functions is basically & functionally
the same as cmpxchg_double(), but with a saner interface: instead
of a 6-parameter horror that forced u128 - u64/u64-halves layout
details on the interface and exposed users to complexity,
fragility & bugs, use a natural 3-parameter interface with u128 types.
- Restructure the generated atomic headers, and add
kerneldoc comments for all of the generic atomic{,64,_long}_t
operations. Generated definitions are much cleaner now,
and come with documentation.
- Implement lock_set_cmp_fn() on lockdep, for defining an ordering
when taking multiple locks of the same type. This gets rid of
one use of lockdep_set_novalidate_class() in the bcache code.
- Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended
variable shadowing generating garbage code on Clang on certain
ARM builds.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=DsYj
-----END PGP SIGNATURE-----
Merge tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double()
The cmpxchg128() family of functions is basically & functionally the
same as cmpxchg_double(), but with a saner interface.
Instead of a 6-parameter horror that forced u128 - u64/u64-halves
layout details on the interface and exposed users to complexity,
fragility & bugs, use a natural 3-parameter interface with u128
types.
- Restructure the generated atomic headers, and add kerneldoc comments
for all of the generic atomic{,64,_long}_t operations.
The generated definitions are much cleaner now, and come with
documentation.
- Implement lock_set_cmp_fn() on lockdep, for defining an ordering when
taking multiple locks of the same type.
This gets rid of one use of lockdep_set_novalidate_class() in the
bcache code.
- Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended variable
shadowing generating garbage code on Clang on certain ARM builds.
* tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
locking/atomic: scripts: fix ${atomic}_dec_if_positive() kerneldoc
percpu: Fix self-assignment of __old in raw_cpu_generic_try_cmpxchg()
locking/atomic: treewide: delete arch_atomic_*() kerneldoc
locking/atomic: docs: Add atomic operations to the driver basic API documentation
locking/atomic: scripts: generate kerneldoc comments
docs: scripts: kernel-doc: accept bitwise negation like ~@var
locking/atomic: scripts: simplify raw_atomic*() definitions
locking/atomic: scripts: simplify raw_atomic_long*() definitions
locking/atomic: scripts: split pfx/name/sfx/order
locking/atomic: scripts: restructure fallback ifdeffery
locking/atomic: scripts: build raw_atomic_long*() directly
locking/atomic: treewide: use raw_atomic*_<op>()
locking/atomic: scripts: add trivial raw_atomic*_<op>()
locking/atomic: scripts: factor out order template generation
locking/atomic: scripts: remove leftover "${mult}"
locking/atomic: scripts: remove bogus order parameter
locking/atomic: xtensa: add preprocessor symbols
locking/atomic: x86: add preprocessor symbols
locking/atomic: sparc: add preprocessor symbols
locking/atomic: sh: add preprocessor symbols
...
- Scheduler SMP load-balancer improvements:
- Avoid unnecessary migrations within SMT domains on hybrid systems.
Problem:
On hybrid CPU systems, (processors with a mixture of higher-frequency
SMT cores and lower-frequency non-SMT cores), under the old code
lower-priority CPUs pulled tasks from the higher-priority cores if
more than one SMT sibling was busy - resulting in many unnecessary
task migrations.
Solution:
The new code improves the load balancer to recognize SMT cores with more
than one busy sibling and allows lower-priority CPUs to pull tasks, which
avoids superfluous migrations and lets lower-priority cores inspect all SMT
siblings for the busiest queue.
- Implement the 'runnable boosting' feature in the EAS balancer: consider CPU
contention in frequency, EAS max util & load-balance busiest CPU selection.
This improves CPU utilization for certain workloads, while leaves other key
workloads unchanged.
- Scheduler infrastructure improvements:
- Rewrite the scheduler topology setup code by consolidating it
into the build_sched_topology() helper function and building
it dynamically on the fly.
- Resolve the local_clock() vs. noinstr complications by rewriting
the code: provide separate sched_clock_noinstr() and
local_clock_noinstr() functions to be used in instrumentation code,
and make sure it is all instrumentation-safe.
- Fixes:
- Fix a kthread_park() race with wait_woken()
- Fix misc wait_task_inactive() bugs unearthed by the -rt merge:
- Fix UP PREEMPT bug by unifying the SMP and UP implementations.
- Fix task_struct::saved_state handling.
- Fix various rq clock update bugs, unearthed by turning on the rq clock
debugging code.
- Fix the PSI WINDOW_MIN_US trigger limit, which was easy to trigger by
creating enough cgroups, by removing the warnign and restricting
window size triggers to PSI file write-permission or CAP_SYS_RESOURCE.
- Propagate SMT flags in the topology when removing degenerate domain
- Fix grub_reclaim() calculation bug in the deadline scheduler code
- Avoid resetting the min update period when it is unnecessary, in
psi_trigger_destroy().
- Don't balance a task to its current running CPU in load_balance(),
which was possible on certain NUMA topologies with overlapping
groups.
- Fix the sched-debug printing of rq->nr_uninterruptible
- Cleanups:
- Address various -Wmissing-prototype warnings, as a preparation
to (maybe) enable this warning in the future.
- Remove unused code
- Mark more functions __init
- Fix shadow-variable warnings
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmSatWQRHG1pbmdvQGtl
cm5lbC5vcmcACgkQEnMQ0APhK1j62xAAuGOx1LcDfRGC6WGQzp1zOdlsVQtnDvlS
qL58zYSHgizprpVQ3j87SBaG4CHCdvd2Bo36yW0lNZS4nd203qdq7fkrMb3hPP/w
egUQUzMegf5fF6BWldKeMjuHSt+twFQz/ZAKK8iSbAir6CHNAqbNst1oL0i/+Tyk
o33hBs1hT5tnbFb1NSVZkX4k+qT3LzTW4K2QgjjGtkScr6yHh2BdEVefyigWOjdo
9s02d00ll9a2r+F5txlN7Dnw6TN7rmTXGMOJU5bZvBE90/anNiAorMXHJdEKCyUR
u9+JtBdJWiCplGa/tSRcxT16ZW1VdtTnd9q66TDhXREd2UNDFqBEyg5Wl77K4Tlf
vKFajmj/to+cTbuv6m6TVR+zyXpdEpdL6F04P44U3qiJvDobBqeDNKHHIqpmbHXl
AXUXcPWTVAzXX1Ce5M+BeAgTBQ1T7C5tELILrTNQHJvO1s9VVBRFZ/l65Ps4vu7T
wIZ781IFuopk0zWqHovNvgKrJ7oFmOQQZFttQEe8n6nafkjI7u+IZ8FayiGaUMRr
4GawFGUCEdYh8z9qyslGKe8Q/Rphfk6hxMFRYUJpDmubQ0PkMeDjDGq77jDGl1PF
VqwSDEyOaBJs7Gqf/mem00JtzBmXhkhm1SEjggHMI2IQbr/eeBXoLQOn3CDapO/N
PiDbtX760ic=
=EWQA
-----END PGP SIGNATURE-----
Merge tag 'sched-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Scheduler SMP load-balancer improvements:
- Avoid unnecessary migrations within SMT domains on hybrid systems.
Problem:
On hybrid CPU systems, (processors with a mixture of
higher-frequency SMT cores and lower-frequency non-SMT cores),
under the old code lower-priority CPUs pulled tasks from the
higher-priority cores if more than one SMT sibling was busy -
resulting in many unnecessary task migrations.
Solution:
The new code improves the load balancer to recognize SMT cores
with more than one busy sibling and allows lower-priority CPUs
to pull tasks, which avoids superfluous migrations and lets
lower-priority cores inspect all SMT siblings for the busiest
queue.
- Implement the 'runnable boosting' feature in the EAS balancer:
consider CPU contention in frequency, EAS max util & load-balance
busiest CPU selection.
This improves CPU utilization for certain workloads, while leaves
other key workloads unchanged.
Scheduler infrastructure improvements:
- Rewrite the scheduler topology setup code by consolidating it into
the build_sched_topology() helper function and building it
dynamically on the fly.
- Resolve the local_clock() vs. noinstr complications by rewriting
the code: provide separate sched_clock_noinstr() and
local_clock_noinstr() functions to be used in instrumentation code,
and make sure it is all instrumentation-safe.
Fixes:
- Fix a kthread_park() race with wait_woken()
- Fix misc wait_task_inactive() bugs unearthed by the -rt merge:
- Fix UP PREEMPT bug by unifying the SMP and UP implementations
- Fix task_struct::saved_state handling
- Fix various rq clock update bugs, unearthed by turning on the rq
clock debugging code.
- Fix the PSI WINDOW_MIN_US trigger limit, which was easy to trigger
by creating enough cgroups, by removing the warnign and restricting
window size triggers to PSI file write-permission or
CAP_SYS_RESOURCE.
- Propagate SMT flags in the topology when removing degenerate domain
- Fix grub_reclaim() calculation bug in the deadline scheduler code
- Avoid resetting the min update period when it is unnecessary, in
psi_trigger_destroy().
- Don't balance a task to its current running CPU in load_balance(),
which was possible on certain NUMA topologies with overlapping
groups.
- Fix the sched-debug printing of rq->nr_uninterruptible
Cleanups:
- Address various -Wmissing-prototype warnings, as a preparation to
(maybe) enable this warning in the future.
- Remove unused code
- Mark more functions __init
- Fix shadow-variable warnings"
* tag 'sched-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
sched/core: Avoid multiple calling update_rq_clock() in __cfsb_csd_unthrottle()
sched/core: Avoid double calling update_rq_clock() in __balance_push_cpu_stop()
sched/core: Fixed missing rq clock update before calling set_rq_offline()
sched/deadline: Update GRUB description in the documentation
sched/deadline: Fix bandwidth reclaim equation in GRUB
sched/wait: Fix a kthread_park race with wait_woken()
sched/topology: Mark set_sched_topology() __init
sched/fair: Rename variable cpu_util eff_util
arm64/arch_timer: Fix MMIO byteswap
sched/fair, cpufreq: Introduce 'runnable boosting'
sched/fair: Refactor CPU utilization functions
cpuidle: Use local_clock_noinstr()
sched/clock: Provide local_clock_noinstr()
x86/tsc: Provide sched_clock_noinstr()
clocksource: hyper-v: Provide noinstr sched_clock()
clocksource: hyper-v: Adjust hv_read_tsc_page_tsc() to avoid special casing U64_MAX
x86/vdso: Fix gettimeofday masking
math64: Always inline u128 version of mul_u64_u64_shr()
s390/time: Provide sched_clock_noinstr()
loongarch: Provide noinstr sched_clock_read()
...
used in
-----BEGIN PGP SIGNATURE-----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=haGW
-----END PGP SIGNATURE-----
Merge tag 'x86_sgx_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SGX update from Borislav Petkov:
- A fix to avoid using a list iterator variable after the loop it is
used in
* tag 'x86_sgx_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sgx: Avoid using iterator after loop in sgx_mmu_notifier_release()
the usage patterns are becoming apparent
-----BEGIN PGP SIGNATURE-----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=Aj6p
-----END PGP SIGNATURE-----
Merge tag 'x86_sev_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov:
- Some SEV and CC platform helpers cleanup and simplifications now that
the usage patterns are becoming apparent
[ I'm sure I'm the only one that has gets confused by all the TLAs, but
in case there are others: here SEV is AMD's "Secure Encrypted
Virtualization" and CC is generic "Confidential Computing".
There's also Intel SGX (Software Guard Extensions) and TDX (Trust
Domain Extensions), along with all the vendor memory encryption
extensions (SME, TSME, TME, and WTF).
And then we have arm64 with RMA and CCA, and I probably forgot another
dozen or so related acronyms - Linus ]
* tag 'x86_sev_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/coco: Get rid of accessor functions
x86/sev: Get rid of special sev_es_enable_key
x86/coco: Mark cc_platform_has() and descendants noinstr
mechanism in order to look up the memory type of a region easily. Also
address memory range lookup issues like returning an invalid memory
type. Furthermore, this handles the decoupling of PAT from MTRR more
naturally. All work by Juergen Gross
-----BEGIN PGP SIGNATURE-----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=Dmx5
-----END PGP SIGNATURE-----
Merge tag 'x86_mtrr_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mtrr updates from Borislav Petkov:
"A serious scrubbing of the MTRR code including adding a new map
mechanism in order to look up the memory type of a region easily.
Also address memory range lookup issues like returning an invalid
memory type. Furthermore, this handles the decoupling of PAT from MTRR
more naturally.
All work by Juergen Gross"
* tag 'x86_mtrr_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/xen: Set default memory type for PV guests to WB
x86/mtrr: Unify debugging printing
x86/mtrr: Remove unused code
x86/mm: Only check uniform after calling mtrr_type_lookup()
x86/mtrr: Don't let mtrr_type_lookup() return MTRR_TYPE_INVALID
x86/mtrr: Use new cache_map in mtrr_type_lookup()
x86/mtrr: Add mtrr=debug command line option
x86/mtrr: Construct a memory map with cache modes
x86/mtrr: Add get_effective_type() service function
x86/mtrr: Allocate mtrr_value array dynamically
x86/mtrr: Move 32-bit code from mtrr.c to legacy.c
x86/mtrr: Have only one set_mtrr() variant
x86/mtrr: Replace vendor tests in MTRR code
x86/xen: Set MTRR state when running as Xen PV initial domain
x86/hyperv: Set MTRR state when running as SEV-SNP Hyper-V guest
x86/mtrr: Support setting MTRR state for software defined MTRRs
x86/mtrr: Replace size_or_mask and size_and_mask with a much easier concept
x86/mtrr: Remove physical address size calculation
handling symbols so that tools do not get confused by the presence of
code belonging to the wrong symbol/not belonging to any symbol
- Improve csum_partial()'s performance
- Some improvements to the kcpuid tool
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmSawNoACgkQEsHwGGHe
VUppXw//YezVoWUUUeTedZl8nRbotwXUlATjsIGcRGe2rZQ/7Ud/NUagWiLmKcpy
fAEt+Rd0MbukCNPmTjcw04NN9djs2avVXJS3CCsGNDv/Q6AsBpMcOD4dESxbWIgh
NpkNvO3bKRKxtaoJukmxiiIBlMFzXXtKg/fgzB8FeYZDhGMfS7wBlcDeJIdmWWxO
T5hykFoc/47e8SPG+K/VLT8hoQCg4KPpi3aSN6n+eq8nnlosABr95JKvgqeq1mXf
UPdITYzKHDiny0ZqL2nqsx1MGh24CLc3QCxi5qMDE27NVFokRdfyCiK3DVZvgrNo
IA5BsiKJ0Ddeo2F1Weu+rBI7Hhf+OBZlw7WmWpqQ3rEbeEJ4L1iWeeHwrBNzyuZq
ftb7OScukusaGAMamhhnErR2GwdP3SBDnnUtsue3qqPK1acYPdFfCJCqXvYsCczQ
Pn6eKE2Vlp/3febce7QtZtcz7qlv60UZvj3OpYbECIKcD1/8BWEidquSgPASxs9e
WH+MvDlV/tgwzLVAG0Zp5x7DE/VzDPIKtMMRzgx1clSSPyRwzW0jhp+C4/xPsDCT
2lLHZu/ay7O2A1kiH6m0/ULAm/gUzRNsKCNRlP/HVVXl7+U6lZeZR3D14QOPl8n8
F1W/seOCLxnxx8dVF/hHmirDQuwSjF9vRewmWvvOUgzmYBid8j0=
=6U2J
-----END PGP SIGNATURE-----
Merge tag 'x86_misc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 updates from Borislav Petkov:
- Remove the local symbols prefix of the get/put_user() exception
handling symbols so that tools do not get confused by the presence of
code belonging to the wrong symbol/not belonging to any symbol
- Improve csum_partial()'s performance
- Some improvements to the kcpuid tool
* tag 'x86_misc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/lib: Make get/put_user() exception handling a visible symbol
x86/csum: Fix clang -Wuninitialized in csum_partial()
x86/csum: Improve performance of `csum_partial`
tools/x86/kcpuid: Add .gitignore
tools/x86/kcpuid: Dump the correct CPUID function in error
the early loading procedure
- Cleanups
-----BEGIN PGP SIGNATURE-----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=2i55
-----END PGP SIGNATURE-----
Merge tag 'x86_microcode_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loader updates from Borislav Petkov:
- Load late on both SMT threads on AMD, just like it is being done in
the early loading procedure
- Cleanups
* tag 'x86_microcode_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode/AMD: Load late on both threads too
x86/microcode/amd: Remove unneeded pointer arithmetic
x86/microcode/AMD: Get rid of __find_equiv_id()
- Remove repeated 'the' in comments
- Remove unused current_untag_mask()
- Document urgent tip branch timing
- Clean up MSR kernel-doc notation
- Clean up paravirt_ops doc
- Update Srivatsa S. Bhat's maintained areas
- Remove unused extern declaration acpi_copy_wakeup_routine()
-----BEGIN PGP SIGNATURE-----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=N82i
-----END PGP SIGNATURE-----
Merge tag 'x86_cleanups_for_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Dave Hansen:
"As usual, these are all over the map. The biggest cluster is work from
Arnd to eliminate -Wmissing-prototype warnings:
- Address -Wmissing-prototype warnings
- Remove repeated 'the' in comments
- Remove unused current_untag_mask()
- Document urgent tip branch timing
- Clean up MSR kernel-doc notation
- Clean up paravirt_ops doc
- Update Srivatsa S. Bhat's maintained areas
- Remove unused extern declaration acpi_copy_wakeup_routine()"
* tag 'x86_cleanups_for_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
x86/acpi: Remove unused extern declaration acpi_copy_wakeup_routine()
Documentation: virt: Clean up paravirt_ops doc
x86/mm: Remove unused current_untag_mask()
x86/mm: Remove repeated word in comments
x86/lib/msr: Clean up kernel-doc notation
x86/platform: Avoid missing-prototype warnings for OLPC
x86/mm: Add early_memremap_pgprot_adjust() prototype
x86/usercopy: Include arch_wb_cache_pmem() declaration
x86/vdso: Include vdso/processor.h
x86/mce: Add copy_mc_fragile_handle_tail() prototype
x86/fbdev: Include asm/fb.h as needed
x86/hibernate: Declare global functions in suspend.h
x86/entry: Add do_SYSENTER_32() prototype
x86/quirks: Include linux/pnp.h for arch_pnpbios_disabled()
x86/mm: Include asm/numa.h for set_highmem_pages_init()
x86: Avoid missing-prototype warnings for doublefault code
x86/fpu: Include asm/fpu/regset.h
x86: Add dummy prototype for mk_early_pgtbl_32()
x86/pci: Mark local functions as 'static'
x86/ftrace: Move prepare_ftrace_return prototype to header
...
Jakub Kicinski