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04944b793e
android_kernel_xiaomi_sm8350/arch/x86/kernel
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Suresh Siddha 04944b793e x86: xsave: set FP, SSE bits in the xsave header in the user sigcontext 
If a processor implementation discern that a processor state component is in
its initialized state, it may modify the corresponding bit in the
xsave header.xstate_bv as '0'. State in the memory layout setup by 'xsave'
will be consistent with the bit values in the header.

During signal handling, legacy applications may change the FP/SSE bits
in the sigcontext memory layout without touching the FP/SSE header bits
in the xsave header. So always set FP/SSE bits in the xsave header
while saving the sigcontext state to the user space. During signal return,
this will enable the kernel to capture any changes to the FP/SSE bits by the
legacy applications which don't touch xsave headers.

xsave aware apps can change the xstate_bv in the xsave header aswell
as change any contents in the memory layout. xrestor as part of sigreturn
will capture all the changes.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-07 14:36:08 -07:00
..
acpi Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
cpu Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
.gitignore arch/x86/kernel/.gitignore: Added vmlinux.lds to .gitignore file because it shouldn't be tracked. 2008-07-10 10:13:51 -07:00
alternative.c x86: use X86_FEATURE_NOPL in alternatives 2008-08-18 18:22:18 -07:00
amd_iommu_init.c x86, AMD IOMMU: initialize dma_ops after sysfs registration 2008-08-15 13:56:56 +02:00
amd_iommu.c x86 iommu: remove unneeded parenthesis 2008-08-19 02:16:24 +02:00
aperture_64.c x86: make only GART code include gart.h 2008-07-11 11:00:54 +02:00
apic_32.c Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
apic_64.c Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
apm_32.c remove include/linux/pm_legacy.h 2008-07-24 10:47:22 -07:00
asm-offsets_32.c x86/paravirt: split sysret and sysexit 2008-07-08 13:13:15 +02:00
asm-offsets_64.c x86: consolidate header guards 2008-07-22 21:53:53 +02:00
asm-offsets.c
audit_64.c
bios_uv.c x86 BIOS interface for RTC on SGI UV 2008-07-18 14:35:14 +02:00
bootflag.c
cpuid.c x86: cpuid: correct return value on partial operations 2008-08-25 17:46:12 -07:00
crash_dump_32.c
crash_dump_64.c
crash.c
doublefault_32.c
ds.c
e820.c x86: introduce x86_quirks 2008-07-20 09:18:17 +02:00
early_printk.c x86, generic: mark early_printk as asmlinkage 2008-06-18 13:11:01 +02:00
early-quirks.c Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus 2008-07-21 16:37:17 +02:00
efi_32.c x86: fix i486 suspend to disk CR4 oops 2008-08-18 08:50:19 +02:00
efi_64.c x86: add flags parameter to reserve_bootmem_generic() 2008-07-08 11:49:49 +02:00
efi_stub_32.S
efi_stub_64.S
efi.c x86: introduce max_low_pfn_mapped for 64-bit 2008-07-11 10:24:04 +02:00
entry_32.S i386 syscall audit fast-path 2008-07-23 18:00:30 -07:00
entry_64.S x86_64 ia32 syscall audit fast-path 2008-07-23 17:55:22 -07:00
ftrace.c ftrace: store mcount address in rec->ip 2008-06-23 22:10:56 +02:00
genapic_64.c GRU Driver: export is_uv_system(), zap_page_range() & follow_page() 2008-07-30 09:41:48 -07:00
genapic_flat_64.c Merge branch 'linus' into x86/x2apic 2008-07-25 13:08:16 +02:00
genx2apic_cluster.c x86: add apic probe for genapic 64bit - fix 2008-07-27 06:28:16 +02:00
genx2apic_phys.c x86: add apic probe for genapic 64bit - fix 2008-07-27 06:28:16 +02:00
genx2apic_uv_x.c Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
geode_32.c x86, geode: add a VSA2 ID for General Software 2008-06-19 14:19:03 +02:00
head32.c x86: extract common part of head32.c and head64.c into head.c 2008-06-05 15:10:02 +02:00
head64.c x86-64: fix overlap of modules and fixmap areas 2008-08-15 17:31:50 +02:00
head_32.S x86: fix cpu hotplug on 32bit 2008-07-27 21:43:11 +02:00
head_64.S Revert "x86_64: there's no need to preallocate level1_fixmap_pgt" 2008-07-16 11:07:30 +02:00
head.c x86: move reserve_setup_data to setup.c 2008-07-08 13:16:14 +02:00
hpet.c x86: hpet: workaround SB700 BIOS 2008-08-14 13:23:45 +02:00
i386_ksyms_32.c ftrace: store mcount address in rec->ip 2008-06-23 22:10:56 +02:00
i387.c x86: xsave: set FP, SSE bits in the xsave header in the user sigcontext 2008-10-07 14:36:08 -07:00
i8237.c
i8253.c
i8259.c x64, x2apic/intr-remap: 8259 specific mask/unmask routines 2008-07-12 08:44:55 +02:00
init_task.c
io_apic_32.c Merge commit 'v2.6.27-rc3' into x86/xsave 2008-08-14 10:55:26 +02:00
io_apic_64.c Merge commit 'v2.6.27-rc3' into x86/xsave 2008-08-14 10:55:26 +02:00
io_delay.c x86: io delay - add checking for NULL early param 2008-07-09 13:57:54 +02:00
ioport.c
ipi.c x86: APIC: remove apic_write_around(); use alternatives 2008-07-18 12:51:21 +02:00
irq_32.c x86: use __page_aligned_data/bss 2008-07-16 10:54:39 +02:00
irq_64.c
irqinit_32.c
irqinit_64.c x86-64: make BUILD_IRQ() also reset section back 2008-07-24 12:49:26 -07:00
k8.c
kdebugfs.c x86: Add a arch directory for x86 under debugfs 2008-07-18 17:22:04 -07:00
kgdb.c
kprobes.c kprobes: improve kretprobe scalability with hashed locking 2008-07-25 10:53:30 -07:00
kvm.c
kvmclock.c x86: KVM guest: make kvm_smp_prepare_boot_cpu() static 2008-07-20 12:42:37 +03:00
ldt.c cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu 2008-07-26 16:40:33 +02:00
machine_kexec_32.c kexec jump: fix for ftrace 2008-08-15 08:35:43 -07:00
machine_kexec_64.c kexec jump 2008-07-26 12:00:04 -07:00
Makefile x86, xsave: enable xsave/xrstor on cpus with xsave support 2008-07-30 19:49:24 +02:00
mca_32.c
mfgpt_32.c x86, geode-mfgpt: check IRQ before using MFGPT as clocksource 2008-08-15 17:12:32 +02:00
microcode.c cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu 2008-07-26 16:40:33 +02:00
mmconf-fam10h_64.c x86: mmconf: fix section mismatch warning 2008-08-18 07:49:06 +02:00
module_32.c
module_64.c PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
mpparse.c Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
msr.c x86: msr: correct return value on partial operations 2008-08-25 17:46:12 -07:00
nmi.c x86, nmi: clean UP NMI watchdog failure message 2008-08-15 15:35:31 +02:00
numaq_32.c Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
olpc.c
paravirt_patch_32.c x86/paravirt: split sysret and sysexit 2008-07-08 13:13:15 +02:00
paravirt_patch_64.c x86/paravirt: add sysret/sysexit pvops for returning to 32-bit compatibility userspace 2008-07-08 13:15:52 +02:00
paravirt.c Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
pci-calgary_64.c x86: use WARN() in arch/x86/kernel 2008-08-21 10:01:52 +02:00
pci-dma.c generic, x86: fix add iommu_num_pages helper function 2008-07-29 12:12:48 +02:00
pci-gart_64.c Merge branch 'x86/iommu' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into for-linus 2008-07-28 14:31:10 -07:00
pci-nommu.c dma-mapping: add the device argument to dma_mapping_error() 2008-07-26 12:00:03 -07:00
pci-swiotlb_64.c dma-mapping: add the device argument to dma_mapping_error() 2008-07-26 12:00:03 -07:00
pcspeaker.c
pmtimer_64.c
probe_roms_32.c x86: seperate probe_roms into another file 2008-07-08 12:50:05 +02:00
process_32.c x86: invalidate caches before going into suspend 2008-08-15 14:04:30 +02:00
process_64.c x86: invalidate caches before going into suspend 2008-08-15 14:04:30 +02:00
process.c Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus 2008-07-21 16:37:17 +02:00
ptrace.c x86 ptrace: user-sets-TF nits 2008-07-16 12:15:17 -07:00
pvclock.c x86: Add structs and functions for paravirt clocksource 2008-06-24 21:02:31 +03:00
quirks.c Merge branch 'timers/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-07-15 10:39:57 -07:00
reboot_fixups_32.c
reboot.c cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu 2008-07-26 16:40:33 +02:00
relocate_kernel_32.S kexec jump: check code size in control page 2008-08-15 08:35:42 -07:00
relocate_kernel_64.S
rtc.c provide rtc_cmos platform device 2008-06-12 18:05:42 -07:00
scx200_32.c
setup_percpu.c cpu masks: optimize and clean up cpumask_of_cpu() 2008-07-28 22:20:41 +02:00
setup.c Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
sigframe.h x86, xsave: dynamically allocate sigframes fpstate instead of static allocation 2008-07-30 19:49:25 +02:00
signal_32.c x86, xsave: save/restore the extended state context in sigframe 2008-07-30 19:49:27 +02:00
signal_64.c x86, xsave: remove the redundant access_ok() in setup_rt_frame() 2008-08-14 10:56:06 +02:00
smp.c generic-ipi: fixlet 2008-07-06 14:01:50 +02:00
smpboot.c Merge branch 'x86/cpu' into x86/xsave 2008-09-04 09:04:45 -07:00
smpcommon.c x86: change init_gdt to update the gdt via write_gdt, rather than a direct write. 2008-08-15 19:16:05 +02:00
stacktrace.c stacktrace: fix modular build, export print_stack_trace and save_stack_trace 2008-06-30 09:20:55 +02:00
step.c x86 ptrace: user-sets-TF nits 2008-07-16 12:15:17 -07:00
summit_32.c x86: mach_summit to summit 2008-07-26 16:31:35 +02:00
sys_i386_32.c x86: coding style fixes to arch/x86/kernel/sys_i386_32.c 2008-06-10 12:34:54 +02:00
sys_x86_64.c
syscall_64.c x86: consolidate header guards 2008-07-22 21:53:53 +02:00
syscall_table_32.S flag parameters add-on: remove epoll_create size param 2008-07-24 10:47:29 -07:00
tce_64.c
test_nx.c
test_rodata.c
time_32.c x86: add ->pre_time_init to x86_quirks 2008-07-20 09:25:52 +02:00
time_64.c x86: merge tsc_init and clocksource code 2008-07-09 07:43:27 +02:00
tlb_32.c on_each_cpu(): kill unused 'retry' parameter 2008-06-26 11:24:38 +02:00
tlb_64.c Merge branch 'generic-ipi' into generic-ipi-for-linus 2008-07-15 21:55:59 +02:00
tlb_uv.c x86, SGI UV: hardcode the TLB flush interrupt system vector 2008-08-20 12:36:03 +02:00
tls.c
tls.h
topology.c
trampoline_32.S
trampoline_64.S
trampoline.c x86: extend e820 ealy_res support 32bit 2008-05-25 10:55:11 +02:00
traps_32.c x86, xsave: enable xsave/xrstor on cpus with xsave support 2008-07-30 19:49:24 +02:00
traps_64.c x86, xsave: context switch support using xsave/xrstor 2008-07-30 19:49:24 +02:00
tsc_sync.c x86: use WARN() in arch/x86/kernel 2008-08-21 10:01:52 +02:00
tsc.c x86: fix cpufreq + sched_clock() regression 2008-08-25 14:39:19 +02:00
verify_cpu_64.S
visws_quirks.c x86: resurrect proper handling of maxcpus= kernel option (v2) 2008-08-14 11:18:08 +02:00
vm86_32.c
vmi_32.c Merge commit 'v2.6.27-rc3' into x86/xsave 2008-08-14 10:55:26 +02:00
vmiclock_32.c x86: rename paravirtualized TSC functions 2008-07-09 07:43:28 +02:00
vmlinux_32.lds.S kexec jump: check code size in control page 2008-08-15 08:35:42 -07:00
vmlinux_64.lds.S Merge branch 'core/rodata' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-07-14 15:28:10 -07:00
vmlinux.lds.S
vsmp_64.c
vsyscall_64.c Merge branch 'generic-ipi' into generic-ipi-for-linus 2008-07-15 21:55:59 +02:00
x8664_ksyms_64.c Merge branch 'auto-ftrace-next' into tracing/for-linus 2008-07-14 16:11:52 +02:00
xsave.c x86: xsave: set FP, SSE bits in the xsave header in the user sigcontext 2008-10-07 14:36:08 -07:00