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OpenCloudOS-Kernel/arch/arm64/kernel
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Gavin Shan 9d2d75ede5 arm64/kernel: Fix range on invalidating dcache for boot page tables 
Prior to commit 8eb7e28d4c ("arm64/mm: move runtime pgds to
rodata"), idmap_pgd_dir, tramp_pg_dir, reserved_ttbr0, swapper_pg_dir,
and init_pg_dir were contiguous at the end of the kernel image. The
maintenance at the end of __create_page_tables assumed these were
contiguous, and affected everything from the start of idmap_pg_dir
to the end of init_pg_dir.

That commit moved all but init_pg_dir into the .rodata section, with
other data placed between idmap_pg_dir and init_pg_dir, but did not
update the maintenance. Hence the maintenance is performed on much
more data than necessary (but as the bootloader previously made this
clean to the PoC there is no functional problem).

As we only alter idmap_pg_dir, and init_pg_dir, we only need to perform
maintenance for these. As the other dirs are in .rodata, the bootloader
will have initialised them as expected and cleaned them to the PoC. The
kernel will initialize them as necessary after enabling the MMU.

This patch reworks the maintenance to only cover the idmap_pg_dir and
init_pg_dir to avoid this unnecessary work.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20200427235700.112220-1-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
 		2020-04-28 14:48:03 +01:00
..
probes arm64: remove __exception annotations 2019-10-28 11:22:38 +00:00
vdso SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
vdso32 SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Makefile arm64: efi: add efi-entry.o to targets instead of extra-$(CONFIG_EFI) 2020-03-09 18:13:25 +00:00
acpi.c arm64: acpi: fix DAIF manipulation with pNMI 2020-01-22 14:41:22 +00:00
acpi_numa.c acpi: Create subtable parsing infrastructure 2019-04-04 18:41:12 +02:00
acpi_parking_protocol.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
alternative.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
armv8_deprecated.c arm64: armv8_deprecated: Fix undef_hook mask for thumb setend 2020-04-08 18:19:20 +01:00
asm-offsets.c arm64: initialize and switch ptrauth kernel keys 2020-03-18 09:50:20 +00:00
cacheinfo.c arm64 updates for 5.3: 2019-07-08 09:54:55 -07:00
cpu-reset.S arm64: use mov_q instead of literal ldr 2020-03-24 11:48:24 +00:00
cpu-reset.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpu_errata.c arm64: Mark call_smc_arch_workaround_1 as __maybe_unused 2020-03-11 12:01:59 +00:00
cpu_ops.c arm64: Introduce get_cpu_ops() helper function 2020-03-24 17:24:19 +00:00
cpufeature.c Merge branch 'for-next/kernel-ptrauth' into for-next/core 2020-03-25 11:11:08 +00:00
cpuidle.c arm64: Introduce get_cpu_ops() helper function 2020-03-24 17:24:19 +00:00
cpuinfo.c Merge branch 'for-next/rng' into for-next/core 2020-01-22 11:38:53 +00:00
crash_core.c arm64: kernel: arch_crash_save_vmcoreinfo() should depend on CONFIG_CRASH_CORE 2018-09-11 11:08:49 +01:00
crash_dump.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
debug-monitors.c arm64: Remove unneeded rcu_read_lock from debug handlers 2019-08-01 15:00:27 +01:00
efi-entry.S arm64: rename stext to primary_entry 2020-04-28 13:55:16 +01:00
efi-header.S efi/libstub: Introduce symbolic constants for the stub major/minor version 2020-02-23 21:59:42 +01:00
efi-rt-wrapper.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
efi.c mm/pgtable: drop pgtable_t variable from pte_fn_t functions 2019-07-12 11:05:46 -07:00
entry-common.c arm64: entry: remove unneeded semicolon in el1_sync_handler() 2020-04-28 14:08:57 +01:00
entry-fpsimd.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
entry-ftrace.S arm64: entry-ftrace.S: Fix missing argument for CONFIG_FUNCTION_GRAPH_TRACER=y 2020-03-11 11:06:48 +00:00
entry.S Merge branch 'for-next/kernel-ptrauth' into for-next/core 2020-03-25 11:11:08 +00:00
fpsimd.c arm64: nofpsmid: Handle TIF_FOREIGN_FPSTATE flag cleanly 2020-01-14 17:11:53 +00:00
ftrace.c arm64: ftrace: minimize ifdeffery 2019-11-06 14:17:36 +00:00
head.S arm64/kernel: Fix range on invalidating dcache for boot page tables 2020-04-28 14:48:03 +01:00
hibernate-asm.S arm64: remove gratuitious/stray .ltorg stanzas 2020-03-04 15:47:47 +00:00
hibernate.c arm64: hibernate: Use bringup_hibernate_cpu() 2020-03-25 12:59:34 +01:00
hw_breakpoint.c Printk changes for 5.5 2019-11-25 19:40:40 -08:00
hyp-stub.S arm64: use mov_q instead of literal ldr 2020-03-24 11:48:24 +00:00
image-vars.h arm64: rename stext to primary_entry 2020-04-28 13:55:16 +01:00
image.h arm64/efi: Move variable assignments after SECTIONS 2019-08-14 17:18:15 +01:00
insn.c arm64: insn: consistently handle exit text 2019-12-04 11:32:20 +00:00
io.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
irq.c arm64 updates for 5.3: 2019-07-08 09:54:55 -07:00
jump_label.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
kaslr.c arm64: Fix CONFIG_ARCH_RANDOM=n build 2020-02-11 09:47:01 +00:00
kexec_image.c arm64: kexec_file: add crash dump support 2020-01-08 17:05:23 +00:00
kgdb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
kuser32.S docs: arm: convert docs to ReST and rename to *.rst 2019-07-15 09:20:24 -03:00
machine_kexec.c Revert "arm64: kexec: make dtb_mem always enabled" 2020-01-10 16:00:50 +00:00
machine_kexec_file.c arm64: kexec_file: Avoid temp buffer for RNG seed 2020-04-28 13:55:51 +01:00
module-plts.c arm64: implement ftrace with regs 2019-11-06 14:17:35 +00:00
module.c arm64: implement ftrace with regs 2019-11-06 14:17:35 +00:00
module.lds arm64: ftrace: emit ftrace-mod.o contents through code 2017-12-01 13:04:59 +00:00
paravirt.c arm64: Retrieve stolen time as paravirtualized guest 2019-10-21 19:20:31 +01:00
pci.c pci-v5.3-changes 2019-07-15 20:44:49 -07:00
perf_callchain.c arm64: stacktrace: Factor out backtrace initialisation 2019-07-22 11:44:08 +01:00
perf_event.c arm64: perf: Add support for ARMv8.5-PMU 64-bit counters 2020-03-17 22:50:30 +00:00
perf_regs.c compat: Move compat_timespec/ timeval to compat_time.h 2018-04-19 13:29:54 +02:00
pointer_auth.c arm64: install user ptrauth keys at kernel exit time 2020-03-18 09:50:19 +00:00
process.c arm64 updates for 5.7: 2020-03-31 10:05:01 -07:00
psci.c arm64: psci: Reduce the waiting time for cpu_psci_cpu_kill() 2019-10-25 16:29:11 +01:00
ptrace.c arm64: rename ptrauth key structures to be user-specific 2020-03-18 09:50:18 +00:00
reloc_test_core.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
reloc_test_syms.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
relocate_kernel.S arm64: use mov_q instead of literal ldr 2020-03-24 11:48:24 +00:00
return_address.c arm64: unwind: Prohibit probing on return_address() 2019-08-01 15:00:26 +01:00
sdei.c firmware: arm_sdei: use common SMCCC_CONDUIT_* 2019-10-14 10:55:14 +01:00
setup.c arm64: Introduce get_cpu_ops() helper function 2020-03-24 17:24:19 +00:00
signal.c arm64: signal: nofpsimd: Handle fp/simd context for signal frames 2020-01-14 17:11:46 +00:00
signal32.c arm64: signal: nofpsimd: Handle fp/simd context for signal frames 2020-01-14 17:11:46 +00:00
sigreturn32.S arm64: compat: Split kuser32 2019-04-23 18:01:57 +01:00
sleep.S arm64: ptrauth: Add bootup/runtime flags for __cpu_setup 2020-03-18 09:50:19 +00:00
smccc-call.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
smp.c arm64: smp: Make cpus_stuck_in_kernel static 2020-04-28 14:09:57 +01:00
smp_spin_table.c arm64: prefer __section from compiler_attributes.h 2019-08-13 18:32:15 +01:00
ssbd.c Return ENODEV when the selected speculation misfeature is unsupported 2020-01-08 17:27:41 +00:00
stacktrace.c arm64: unwind: strip PAC from kernel addresses 2020-03-18 09:50:20 +00:00
suspend.c arm64: mm: Support Common Not Private translations 2018-09-18 12:02:27 +01:00
sys.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
sys32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 452 2019-06-19 17:09:08 +02:00
sys_compat.c arm64: Silence clang warning on mismatched value/register sizes 2019-10-28 09:13:21 +00:00
syscall.c arm64: entry: cleanup el0 svc handler naming 2020-01-17 13:22:14 +00:00
time.c arm64: time: Replace <linux/clk-provider.h> by <linux/of_clk.h> 2020-02-12 17:26:38 +00:00
topology.c arm64: use activity monitors for frequency invariance 2020-03-06 16:02:50 +00:00
trace-events-emulation.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
traps.c sched/rt, arm64: Use CONFIG_PREEMPTION 2019-12-08 14:37:32 +01:00
vdso.c arm64: vdso: don't free unallocated pages 2020-04-15 11:13:16 +01:00
vmlinux.lds.S arm64/kernel: Fix range on invalidating dcache for boot page tables 2020-04-28 14:48:03 +01:00