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paravirt: unstatic leave_mm

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Make globally leave_mm visible, specifically so that Xen can use it to
shoot-down lazy uses of cr3.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
This commit is contained in:
Jeremy Fitzhardinge 2007-07-17 18:37:03 -07:00 committed by Jeremy Fitzhardinge
parent 03f0c2f950
commit 5378701324
2 changed files with 5 additions and 2 deletions
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5
arch/i386/kernel/smp.c
View File

@ -22,6 +22,7 @@
#include <asm/mtrr.h>
#include <asm/tlbflush.h>
#include <asm/mmu_context.h>
#include <mach_apic.h>
/*
@ -249,13 +250,13 @@ static unsigned long flush_va;
static DEFINE_SPINLOCK(tlbstate_lock);
/*
* We cannot call mmdrop() because we are in interrupt context,
* We cannot call mmdrop() because we are in interrupt context,
* instead update mm->cpu_vm_mask.
*
* We need to reload %cr3 since the page tables may be going
* away from under us..
*/
static inline void leave_mm (unsigned long cpu)
void leave_mm(unsigned long cpu)
{
if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_OK)
BUG();

2
include/asm-i386/mmu_context.h
View File

@ -32,6 +32,8 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
#endif
}
void leave_mm(unsigned long cpu);
static inline void switch_mm(struct mm_struct *prev,
struct mm_struct *next,
struct task_struct *tsk)