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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-01-15 12:03:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-01-15 12:03:11 -0800 |
| commit | 83346fbc07d267de777e2597552f785174ad0373 (patch) | |
| tree | b321fa8a652b04bc3745be183252ef024a3ba4be /arch/x86/entry/entry_64.S | |
| parent | a11ce3a4ac0ad78618cddb9ce16def7486f2707d (diff) | |
| parent | 453828625731d0ba7218242ef6ec88f59408f368 (diff) | |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
- unwinder fixes
- AMD CPU topology enumeration fixes
- microcode loader fixes
- x86 embedded platform fixes
- fix for a bootup crash that may trigger when clearcpuid= is used
with invalid values"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mpx: Use compatible types in comparison to fix sparse error
x86/tsc: Add the Intel Denverton Processor to native_calibrate_tsc()
x86/entry: Fix the end of the stack for newly forked tasks
x86/unwind: Include __schedule() in stack traces
x86/unwind: Disable KASAN checks for non-current tasks
x86/unwind: Silence warnings for non-current tasks
x86/microcode/intel: Use correct buffer size for saving microcode data
x86/microcode/intel: Fix allocation size of struct ucode_patch
x86/microcode/intel: Add a helper which gives the microcode revision
x86/microcode: Use native CPUID to tickle out microcode revision
x86/CPU: Add native CPUID variants returning a single datum
x86/boot: Add missing declaration of string functions
x86/CPU/AMD: Fix Bulldozer topology
x86/platform/intel-mid: Rename 'spidev' to 'mrfld_spidev'
x86/cpu: Fix typo in the comment for Anniedale
x86/cpu: Fix bootup crashes by sanitizing the argument of the 'clearcpuid=' command-line option
Diffstat (limited to 'arch/x86/entry/entry_64.S')
| -rw-r--r-- | arch/x86/entry/entry_64.S | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index 5b219707c2f2..044d18ebc43c 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -36,6 +36,7 @@ #include <asm/smap.h> #include <asm/pgtable_types.h> #include <asm/export.h> +#include <asm/frame.h> #include <linux/err.h> .code64 @@ -408,17 +409,19 @@ END(__switch_to_asm) * r12: kernel thread arg */ ENTRY(ret_from_fork) + FRAME_BEGIN /* help unwinder find end of stack */ movq %rax, %rdi - call schedule_tail /* rdi: 'prev' task parameter */ + call schedule_tail /* rdi: 'prev' task parameter */ - testq %rbx, %rbx /* from kernel_thread? */ - jnz 1f /* kernel threads are uncommon */ + testq %rbx, %rbx /* from kernel_thread? */ + jnz 1f /* kernel threads are uncommon */ 2: - movq %rsp, %rdi + leaq FRAME_OFFSET(%rsp),%rdi /* pt_regs pointer */ call syscall_return_slowpath /* returns with IRQs disabled */ TRACE_IRQS_ON /* user mode is traced as IRQS on */ SWAPGS + FRAME_END jmp restore_regs_and_iret 1: |