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Commit 086fc8f8 authored by Fenghua Yu's avatar Fenghua Yu Committed by H. Peter Anvin
Browse files

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: default avatarFenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1356075872-3054-8-git-send-email-fenghua.yu@intel.com


Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent e666dfa2

arch/x86/include/asm/tlbflush.h

+12 −6
Original line number Diff line number Diff line
@@ -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);

}