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James Hogan 00fe56dca6 MIPS: Fix FPU disable with preemption 
The FPU should not be left enabled after a task context switch. This
isn't usually a problem as the FPU enable bit is updated before
returning to userland, however it can potentially mask kernel bugs, and
in fact KVM assumes it won't happen and won't clear the FPU enable bit
before returning to the guest, which allows the guest to use stale FPU
context.

Interrupts and exceptions save and restore most bits of the CP0 Status
register which contains the FPU enable bit (CU1). When the kernel needs
to enable or disable the FPU (for example due to attempted FPU use by
userland, or the scheduler being invoked) both the actual Status
register and the saved value in the userland context are updated.

However this doesn't work correctly with full kernel preemption enabled,
since the FPU enable bit can be cleared from within an interrupt when
the scheduler is invoked, and only the userland context is updated, not
the interrupt context.

For example:
1) Enter kernel with FPU already enabled, TIF_USEDFPU=1, Status.CU1=1
   saved.
2) Take a timer interrupt while in kernel mode, Status.CU1=1 saved.
3) Timer interrupt invokes scheduler to preempt the task, which clears
   TIF_USEDFPU, disables the FPU in Status register (Status.CU1=0), and
   the value stored in user context from step (1), but not the interrupt
   context from step (2).
4) When the process is scheduled back in again Status.CU1=0.
5) The interrupt context from step (2) is restored, which sets
   Status.CU1=1. So from user context point of view, preemption has
   re-enabled FPU!
6) If the scheduler is invoked again (via preemption or voluntarily)
   before returning to userland, TIF_USEDFPU=0 so the FPU is not
   disabled before the task context switch.
7) The next task resumes from the context switch with FPU enabled!

The restoring of the Status register on return from interrupt/exception
is already selective about which bits to restore, leaving the interrupt
mask bits alone so enabling/disabling of CPU interrupt lines can
persist. Extend this to also leave both the CU1 bit (FPU enable) and the
FR bit (which specifies the FPU mode and gets changed with CU1). This
prevents a stale Status value being restored in step (5) above and
persisting through subsequent context switches.

Also switch to the use of definitions from asm/mipsregs.h while we're at
it.

Since this change also affects the restoration of Status register on the
path back to userland, it increases the sensitivity of the kernel to the
problem of the FPU being left enabled, allowing it to propagate to
userland, therefore a warning is also added to lose_fpu_inatomic() to
point out any future reoccurances before they do any damage.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12303/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 		2016-02-01 23:36:38 +01:00
..
dec DEC: Document the R4k MB ASIC mini interrupt controller 2014-06-04 22:50:41 +02:00
emma MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
fw MIPS: Malta: Remove fw_memblock_t abstraction 2015-11-11 08:35:45 +01:00
ip32 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
lasat MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
mach-ar7 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-ath25 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-ath79 MIPS: ath79: Allow using ath79_ddr_wb_flush() from drivers 2016-01-04 09:42:25 +01:00
mach-au1x00 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-bcm47xx MIPS: BCM47xx: Fetch board info directly in callback function 2015-11-11 08:36:57 +01:00
mach-bcm63xx Revert "MIPS: bcm63xx: nvram: Remove unused bcm63xx_nvram_get_psi_size() function" 2016-01-27 20:51:50 +01:00
mach-bmips MIPS: BMIPS: Define BMIPS_FIXADDR_TOP in asm/bmips-spaces.h 2015-06-21 21:53:30 +02:00
mach-cavium-octeon MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-cobalt MIPS: Correct `nofpu' non-functionality 2015-04-08 01:09:49 +02:00
mach-db1x00 MIPS: Alchemy: fold mach-db1xxx/db1x00 headers into board code 2014-03-26 23:09:21 +01:00
mach-dec MIPS: DEC: Update CPU overrides 2015-06-21 21:52:44 +02:00
mach-emma2rh MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-generic MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-ip22 MIPS: Correct `nofpu' non-functionality 2015-04-08 01:09:49 +02:00
mach-ip27 MIPS: IP27: Update/restructure CPU overrides 2015-06-21 21:54:13 +02:00
mach-ip28 MIPS: IP28: Fix/clean spaces.h 2014-08-26 02:18:58 +02:00
mach-ip32 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-04-17 15:50:54 -04:00
mach-jazz MIPS: DMA: Implement platform hook to perform post-DMA cache flushes. 2015-04-01 17:22:01 +02:00
mach-jz4740 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-lantiq MIPS: Lantiq: Add support for xRX220 SoC 2015-11-11 08:37:31 +01:00
mach-lasat MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-loongson32 MIPS: Loongson: Naming style cleanup and rework 2015-06-21 21:53:59 +02:00
mach-loongson64 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-malta MIPS: Malta: Setup RAM regions via DT 2015-11-11 08:35:47 +01:00
mach-netlogic MIPS: Netlogic: Move cores per node out of multi-node.h 2015-04-01 17:21:50 +02:00
mach-paravirt MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-pic32 MIPS: Add support for PIC32MZDA platform 2016-01-24 02:53:28 +01:00
mach-pistachio MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-pmcs-msp71xx MIPS: asm: Rename GCC_OFF12_ASM to GCC_OFF_SMALL_ASM 2015-02-17 15:37:21 +00:00
mach-pnx833x MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-ralink MIPS: ralink: add MT7621 support 2016-01-20 00:39:20 +01:00
mach-rc32434 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-rm MIPS: Correct `nofpu' non-functionality 2015-04-08 01:09:49 +02:00
mach-sead3 irqchip: mips-gic: Probe for number of external interrupts 2014-11-24 07:44:56 +01:00
mach-sibyte MIPS: SB1: Remove support for Pass 1 parts. 2015-07-14 21:47:34 +02:00
mach-tx39xx MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-tx49xx MIPS: Replace use of phys_t with phys_addr_t. 2014-11-24 22:47:31 +01:00
mach-vr41xx MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-xilfpga MIPS: xilfpga: Add mipsfpga platform code 2015-11-11 08:38:44 +01:00
mips-boards MIPS: SEAD3: New header file sead3-addr.h with hardware addresses. 2015-04-01 17:22:07 +02:00
netlogic genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
octeon MIPS: Octeon: Fix management port MII address on Kontron S1901 2015-09-03 12:08:11 +02:00
pci MIPS: PCI: Add a hook for IORESOURCE_BUS in pci_controller/bridge_controller 2015-04-01 17:22:16 +02:00
sgi MIPS: Update arch/mips/include/asm/sgi/sgi.h 2015-04-01 17:21:56 +02:00
sibyte MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sn MIPS: IP27: Remove pfn_t. 2013-05-08 03:51:58 +02:00
txx9 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
vr41xx MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
xtalk MIPS: Xtalk: Update xwidget.h with known Xtalk device numbers 2015-06-21 21:54:21 +02:00
Kbuild Merge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile 2015-10-04 16:31:13 +01:00
abi.h MIPS: Initial implementation of a VDSO 2015-11-11 08:36:36 +01:00
addrspace.h MIPS: Add NUMA support for Loongson-3 2014-07-30 21:46:19 +02:00
amon.h MIPS: APRP: Code formatting clean-ups. 2014-01-22 20:19:02 +01:00
arch_hweight.h
…
asm-eva.h MIPS: asm: asm-eva: Introduce kernel load/store variants 2015-04-10 15:41:43 +02:00
asm-offsets.h
…
asm.h MIPS: Fix gigaton of warning building with microMIPS. 2014-03-31 18:17:12 +02:00
asmmacro-32.h Merge branch '4.1-fp' into mips-for-linux-next 2015-04-13 16:01:37 +02:00
asmmacro-64.h MIPS: Support for 64-bit FP with O32 binaries 2014-01-13 23:40:56 +01:00
asmmacro.h MIPS: Introduce accessors for MSA vector registers 2015-09-03 12:07:40 +02:00
atomic.h Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-11-15 09:10:53 -08:00
barrier.h mips: define __smp_xxx 2016-01-12 20:46:56 +02:00
bcache.h MIPS: Introduce API for enabling & disabling L2 prefetch 2015-10-26 09:49:41 +01:00
bitops.h MIPS: Replace smp_mb with release barrier function in unlocks. 2015-06-21 21:54:30 +02:00
bmips-spaces.h MIPS: BMIPS: Define BMIPS_FIXADDR_TOP in asm/bmips-spaces.h 2015-06-21 21:53:30 +02:00
bmips.h MIPS: BMIPS: Move post DMA flush implementation to common header 2015-04-08 23:52:32 +02:00
bootinfo.h MIPS: Replace use of phys_t with phys_addr_t. 2014-11-24 22:47:31 +01:00
branch.h MIPS: kernel: mips-r2-to-r6-emul: Add R2 emulator for MIPS R6 2015-02-17 15:37:37 +00:00
break.h MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h 2013-02-20 18:24:24 +01:00
bug.h
…
bugs.h
…
cache.h
…
cacheflush.h MIPS: Fix race condition in lazy cache flushing. 2015-03-25 13:48:00 +01:00
cacheops.h MIPS: Break down cacheops.h definitions 2016-01-24 03:29:58 +01:00
cdmm.h MIPS: CDMM: Add builtin_mips_cdmm_driver() macro 2015-11-05 11:15:41 +01:00
cevt-r4k.h MIPS: cevt-r4k: Migrate to new 'set-state' interface 2015-09-03 12:07:52 +02:00
checksum.h MIPS: LLVMLinux: Fix an 'inline asm input/output type mismatch' error. 2015-04-01 17:21:47 +02:00
clkdev.h clk: Add common __clk_get(), __clk_put() implementations 2013-12-04 17:19:44 +01:00
clock.h MIPS: Remove declaration of obsolete arch_init_clk_ops() 2014-11-24 07:45:37 +01:00
clocksource.h MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime() 2015-11-11 08:36:41 +01:00
cmp.h MIPS: SMP: Remove plat_smp_ops cpus_done method. 2014-05-27 11:06:42 +02:00
cmpxchg.h arch: Remove __ARCH_HAVE_CMPXCHG 2015-05-13 10:55:42 +02:00
compat-signal.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
compat.h MIPS: Clean up compat_siginfo_t 2015-11-12 11:35:47 +01:00
compiler.h MIPS: Use the new "ZC" constraint for MIPS R6 2015-02-17 15:37:21 +00:00
cop2.h MIPS: Prevent compiler warning from cop2_{save,restore} 2014-10-23 19:58:13 +02:00
cpu-features.h MIPS: Define the legacy-NaN and 2008-NaN features 2016-01-20 00:39:20 +01:00
cpu-info.h MIPS: Respect the ISA level in FCSR handling 2015-04-08 01:10:37 +02:00
cpu-type.h MIPS: Add cases for CPU_I6400 2015-08-26 15:23:03 +02:00
cpu.h MIPS: Define the legacy-NaN and 2008-NaN features 2016-01-20 00:39:20 +01:00
debug.h MIPS: Declare mips_debugfs_dir in a header 2015-10-26 09:49:42 +01:00
delay.h MIPS: Make __{,n,u}delay declarations match definitions and generic delay.h 2012-10-16 22:20:03 +02:00
device.h
…
div64.h
…
dma-coherence.h MIPS: improve checks for noncoherent DMA 2014-01-22 20:43:10 +01:00
dma-mapping.h dma-mapping: always provide the dma_map_ops based implementation 2016-01-20 17:09:18 -08:00
dma.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
ds1287.h
…
dsp.h MIPS: DSP: Fix DSP mask for registers. 2013-01-24 13:20:09 +01:00
edac.h EDAC: Cleanup atomic_scrub mess 2015-05-28 15:31:53 +02:00
elf.h MIPS: Add IEEE Std 754 conformance mode selection 2016-01-20 00:39:20 +01:00
errno.h UAPI: (Scripted) Disintegrate arch/mips/include/asm 2012-10-09 09:47:14 +01:00
eva.h MIPS: EVA: Add new EVA header 2014-08-26 02:18:56 +02:00
exec.h Disintegrate asm/system.h for MIPS 2012-03-28 18:30:02 +01:00
fb.h
…
fixmap.h MIPS: MT: Remove SMTC support 2014-05-24 00:07:01 +02:00
floppy.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
fpregdef.h MIPS: Fix build with binutils 2.24.51+ 2014-11-07 15:07:36 +01:00
fpu.h MIPS: Fix FPU disable with preemption 2016-02-01 23:36:38 +01:00
fpu_emulator.h MIPS: math-emu: Make microMIPS branch delay slot emulation work 2016-01-24 01:35:46 +01:00
ftrace.h MIPS: ftrace: Fix a microMIPS build problem 2014-10-24 02:38:33 +02:00
futex.h MIPS: asm: futex: Set the appropriate ISA level for MIPS R6 2015-02-17 15:37:23 +00:00
gio_device.h MIPS: ip22-gio: Remove legacy suspend/resume support 2015-02-20 13:30:55 +01:00
gt64120.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
hardirq.h
…
hazards.h MIPS: hazards: Add hazard macros for tlb read 2015-06-21 21:52:28 +02:00
highmem.h kmap_atomic_to_page() has no users, remove it 2015-11-09 15:11:24 -08:00
hpet.h MIPS: Loongson-3: Add RS780/SBX00 HPET support 2014-11-24 07:45:02 +01:00
hugetlb.h mm/hugetlb: remove arch_prepare/release_hugepage from arch headers 2015-06-25 17:00:35 -07:00
hw_irq.h
…
i8259.h MIPS: i8259: DT support 2015-06-21 21:54:29 +02:00
ide.h
…
idle.h cpuidle: Invert CPUIDLE_FLAG_TIME_VALID logic 2014-11-12 21:17:27 +01:00
inst.h MIPS: MIPS16e: Support handling of delay slots. 2013-05-09 17:55:20 +02:00
io.h MIPS: io.h: Define `ioremap_cache' 2016-01-24 01:44:21 +01:00
irq.h MIPS: Remove "weak" from get_c0_fdc_int() declaration 2015-09-03 12:07:38 +02:00
irq_cpu.h MIPS: Rename mips_cpu_intc_init() -> mips_cpu_irq_of_init() 2014-11-24 07:44:52 +01:00
irq_gt641xx.h
…
irq_regs.h
…
irqflags.h MIPS: Cleanup the unused __arch_local_irq_restore() function 2016-01-22 01:58:49 +01:00
isadep.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
jazz.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
jazzdma.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
jump_label.h locking/static_keys: Add a new static_key interface 2015-08-03 11:34:15 +02:00
kdebug.h MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
kexec.h MIPS: kdump: Add support 2012-12-13 16:46:47 +01:00
kgdb.h MIPS: Get rid of 'kgdb_early_setup' cruft. 2015-06-21 21:54:10 +02:00
kmap_types.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
kprobes.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
kvm_host.h Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-01-24 12:50:56 -08:00
kvm_para.h MIPS: Add functions for hypervisor call 2014-05-30 21:01:11 +02:00
linkage.h MIPS: Remove "__weak" definition from arch-specific linkage.h 2015-09-03 12:07:39 +02:00
local.h MIPS: asm: local: Set the appropriate ISA level for MIPS R6 2015-02-17 15:37:24 +00:00
m48t37.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
maar.h MIPS: Initialise MAARs on secondary CPUs 2015-09-27 14:15:26 +02:00
mc146818-time.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
mc146818rtc.h
…
mips-cm.h MIPS: smp-cps: Ensure secondary cores start with EVA disabled 2016-01-24 02:09:53 +01:00
mips-cpc.h MIPS: CM: make use of mips_cm_{lock,unlock}_other 2015-11-11 08:35:17 +01:00
mips-r2-to-r6-emul.h MIPS: math-emu: Make microMIPS branch delay slot emulation work 2016-01-24 01:35:46 +01:00
mips_machine.h MIPS: move mips_{set,get}_machine_name() to a more generic place 2013-05-08 01:19:07 +02:00
mips_mt.h MIPS: MT: Remove SMTC support 2014-05-24 00:07:01 +02:00
mipsmtregs.h MIPS: MT: define write_c0_tchalt macro 2014-05-28 16:20:22 +01:00
mipsprom.h
…
mipsregs.h MIPS: Update trap codes 2016-01-24 03:20:46 +01:00
mmu.h MIPS,prctl: add PR_[GS]ET_FP_MODE prctl options for MIPS 2015-02-12 12:30:29 +01:00
mmu_context.h MIPS: HTW: Prevent accidental HTW start due to nested htw_{start, stop} 2015-02-16 10:55:26 +01:00
mmzone.h
…
module.h MIPS: asm: module: define MODULE_PROC_FAMILY for MIPS R6 2015-02-17 15:37:17 +00:00
msa.h MIPS: Introduce accessors for MSA vector registers 2015-09-03 12:07:40 +02:00
msc01_ic.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
nile4.h mips: Update the email address of Geert Uytterhoeven 2014-06-02 16:34:41 +02:00
paccess.h MIPS: Apply `.insn' to fixup labels throughout 2014-11-24 07:45:36 +01:00
page.h Revert "MIPS: Fix PAGE_MASK definition" 2016-01-23 00:28:57 +01:00
pci.h Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
perf_event.h
…
pgalloc.h mips: handle pgtable_page_ctor() fail 2013-11-15 09:32:18 +09:00
pgtable-32.h MIPS: BCM77xx: Remove legacy __cpuinit{,data} sections that crept in 2015-06-21 21:53:42 +02:00
pgtable-64.h MIPS: Expand __swp_offset() to carry 40 significant bits for 64-bit kernel. 2015-04-01 17:21:59 +02:00
pgtable-bits.h mips, thp: remove infrastructure for handling splitting PMDs 2016-01-15 17:56:32 -08:00
pgtable.h Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-01-24 12:50:56 -08:00
pm-cps.h MIPS: pm-cps: add PM state entry code for CPS systems 2014-05-28 16:20:31 +01:00
pm.h Merge branch 'wip-mips-pm' of https://github.com/paulburton/linux into mips-for-linux-next 2014-05-29 15:08:23 +02:00
pmon.h
…
prefetch.h
…
processor.h MIPS: Initial implementation of a VDSO 2015-11-11 08:36:36 +01:00
prom.h MIPS: prepare for user enabling of CONFIG_OF 2015-06-21 21:54:14 +02:00
ptrace.h MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
r4k-timer.h MIPS: Synchronize MIPS count one CPU at a time 2012-08-17 10:57:28 +02:00
r4kcache.h MIPS: r4kcache: Use correct base register for MIPS R6 cache flushes 2015-04-10 15:41:46 +02:00
reboot.h
…
reg.h MIPS: asm/reg.h: Move to uapi 2014-08-02 00:06:38 +02:00
regdef.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
rtlx.h MIPS: APRP: Code formatting clean-ups. 2014-01-22 20:19:02 +01:00
seccomp.h mips: switch to using asm-generic for seccomp.h 2015-04-17 09:04:10 -04:00
setup.h MIPS: Add 8250/16550 serial early printk driver 2013-10-29 21:24:36 +01:00
sgialib.h MIPS: ARC: Add declarations for a few missing ARC firmware functions. 2015-01-13 16:04:28 +01:00
sgiarcs.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
shmparam.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sigcontext.h Revert "MIPS: Save/restore MSA context around signals" 2014-06-26 10:48:18 +01:00
signal.h MIPS: Use common FP sigcontext code for O32 compat 2015-09-03 12:07:56 +02:00
sim.h mips: switch to generic sys_fork() and sys_clone() 2013-02-03 18:33:02 -05:00
smp-cps.h MIPS: pm-cps: Prevent use of mips_cps_* without CPS SMP 2014-07-30 20:47:39 +02:00
smp-ops.h MIPS: SMP: Remove plat_smp_ops cpus_done method. 2014-05-27 11:06:42 +02:00
smp.h MIPS: SMP: Don't increment irq_count multiple times for call function IPIs 2015-08-03 09:25:12 +02:00
sni.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
socket.h UAPI: (Scripted) Disintegrate arch/mips/include/asm 2012-10-09 09:47:14 +01:00
sparsemem.h MIPS: Add NUMA support for Loongson-3 2014-07-30 21:46:19 +02:00
spinlock.h MIPS: Select CONFIG_ARCH_USE_CMPXCHG_LOCKREF for MIPS64 2015-09-03 12:08:01 +02:00
spinlock_types.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
spram.h MIPS: asm: spram: Add new symbol for MIPS scratch pad storage 2015-02-17 15:37:20 +00:00
stackframe.h MIPS: Fix FPU disable with preemption 2016-02-01 23:36:38 +01:00
stackprotector.h MIPS: initial stack protector support 2013-07-01 15:10:48 +02:00
stacktrace.h
…
string.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
switch_to.h MIPS: Tidy up FPU context switching 2015-09-03 12:08:05 +02:00
syscall.h MIPS: Fix buffer overflow in syscall_get_arguments() 2016-02-01 23:27:08 +01:00
termios.h UAPI: (Scripted) Disintegrate arch/mips/include/asm 2012-10-09 09:47:14 +01:00
thread_info.h MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
time.h MIPS: Remove "weak" from get_c0_compare_int() declaration 2015-09-03 12:07:38 +02:00
timex.h MIPS: Implement random_get_entropy with CP0 Random 2014-05-30 18:21:30 +02:00
tlb.h MIPS: tlb: Set the EHINV bit for TLBINVF cores when invalidating the TLB 2014-01-22 20:18:59 +01:00
tlbdebug.h MIPS: Refactor dumping of TLB registers for r3k/r4k 2015-09-03 12:07:45 +02:00
tlbflush.h
…
tlbmisc.h
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topology.h sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask() 2015-05-27 15:22:15 +02:00
traps.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
txx9irq.h MIPS/IRQCHIP: Move irq_chip from arch/mips to drivers/irqchip. 2015-06-21 21:52:50 +02:00
txx9pio.h
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txx9tmr.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
types.h MIPS: Remove now unused definition of phys_t. 2014-11-24 22:47:31 +01:00
uaccess.h MIPS: Fix bitrot in __get_user_unaligned() 2015-12-27 20:07:44 +01:00
uasm.h MIPS: Add MFHC0 and MTHC0 instructions to uasm. 2014-11-24 22:47:31 +01:00
unaligned.h
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unistd.h sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL 2014-06-04 16:54:14 -07:00
uprobes.h MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
vdso.h MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime() 2015-11-11 08:36:41 +01:00
vga.h MIPS: Fix VGA_MAP_MEM macro. 2013-09-18 17:13:58 +02:00
vpe.h MIPS: MT: Remove "weak" from vpe_run() declaration 2015-08-26 15:23:40 +02:00
war.h MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
watch.h
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wbflush.h
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