diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86_64/kernel/entry.S | 4 | ||||
| -rw-r--r-- | arch/x86_64/kernel/setup64.c | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S index 97583bb9122d..9111d55c3764 100644 --- a/arch/x86_64/kernel/entry.S +++ b/arch/x86_64/kernel/entry.S @@ -136,6 +136,10 @@ /* rdi: prev */ ENTRY(ret_from_fork) CFI_DEFAULT_STACK + push kernel_eflags(%rip) + CFI_ADJUST_CFA_OFFSET 4 + popf # reset kernel eflags + CFI_ADJUST_CFA_OFFSET -4 call schedule_tail GET_THREAD_INFO(%rcx) testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),threadinfo_flags(%rcx) diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c index 70f1bb808a20..07772c80cbff 100644 --- a/arch/x86_64/kernel/setup64.c +++ b/arch/x86_64/kernel/setup64.c @@ -178,6 +178,8 @@ void __cpuinit check_efer(void) } } +unsigned long kernel_eflags; + /* * cpu_init() initializes state that is per-CPU. Some data is already * initialized (naturally) in the bootstrap process, such as the GDT @@ -289,4 +291,6 @@ void __cpuinit cpu_init (void) set_debug(0UL, 7); fpu_init(); + + raw_local_save_flags(kernel_eflags); } |