diff options
| author | Fenghua Yu <fenghua.yu@intel.com> | 2012-12-20 23:44:27 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2013-01-31 13:19:16 -0800 |
| commit | 086fc8f8037bf16f55f82c66b26a8b834f7349ec (patch) | |
| tree | 5c47967e99e712eb8c4e5c0d88a455c3823e1763 | |
| parent | e666dfa273db1b12711eaec91facac5fec2ec851 (diff) | |
x86/tlbflush.h: Define __native_flush_tlb_global_irq_disabled()
This function is called in __native_flush_tlb_global() and after
apply_microcode_early().
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1356075872-3054-8-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| -rw-r--r-- | arch/x86/include/asm/tlbflush.h | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h index 0fee48e279c..50a7fc0f824 100644 --- a/arch/x86/include/asm/tlbflush.h +++ b/arch/x86/include/asm/tlbflush.h @@ -20,10 +20,20 @@ static inline void __native_flush_tlb(void) native_write_cr3(native_read_cr3()); } +static inline void __native_flush_tlb_global_irq_disabled(void) +{ + unsigned long cr4; + + cr4 = native_read_cr4(); + /* clear PGE */ + native_write_cr4(cr4 & ~X86_CR4_PGE); + /* write old PGE again and flush TLBs */ + native_write_cr4(cr4); +} + static inline void __native_flush_tlb_global(void) { unsigned long flags; - unsigned long cr4; /* * Read-modify-write to CR4 - protect it from preemption and @@ -32,11 +42,7 @@ static inline void __native_flush_tlb_global(void) */ raw_local_irq_save(flags); - cr4 = native_read_cr4(); - /* clear PGE */ - native_write_cr4(cr4 & ~X86_CR4_PGE); - /* write old PGE again and flush TLBs */ - native_write_cr4(cr4); + __native_flush_tlb_global_irq_disabled(); raw_local_irq_restore(flags); } |