summaryrefslogtreecommitdiff
path: root/include/asm-i386/paravirt.h
diff options
context:
space:
mode:
authorJeremy Fitzhardinge <jeremy@goop.org>2007-05-02 19:27:15 +0200
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 19:27:15 +0200
commitd4c104771a1c58e3de2a888b73b0ba1b54c0ae76 (patch)
tree77ca2c6771e946aa926cb21c06702fdc7d230364 /include/asm-i386/paravirt.h
parent63f70270ccd981ce40a8ff58c03a8c2e97e368be (diff)
[PATCH] i386: PARAVIRT: add flush_tlb_others paravirt_op
This patch adds a pv_op for flush_tlb_others. Linux running on native hardware uses cross-CPU IPIs to flush the TLB on any CPU which may have a particular mm's pagetable entries cached in its TLB. This is inefficient in a paravirtualized environment, since the hypervisor knows which real CPUs actually contain cached mappings, which may be a small subset of a guest's VCPUs. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'include/asm-i386/paravirt.h')
-rw-r--r--include/asm-i386/paravirt.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h
index 4b3d5085867..f880b06d6d5 100644
--- a/include/asm-i386/paravirt.h
+++ b/include/asm-i386/paravirt.h
@@ -15,6 +15,7 @@
#ifndef __ASSEMBLY__
#include <linux/types.h>
+#include <linux/cpumask.h>
struct thread_struct;
struct Xgt_desc_struct;
@@ -165,6 +166,8 @@ struct paravirt_ops
void (*flush_tlb_user)(void);
void (*flush_tlb_kernel)(void);
void (*flush_tlb_single)(unsigned long addr);
+ void (*flush_tlb_others)(const cpumask_t *cpus, struct mm_struct *mm,
+ unsigned long va);
void (*map_pt_hook)(int type, pte_t *va, u32 pfn);
@@ -853,6 +856,12 @@ static inline void __flush_tlb_single(unsigned long addr)
PVOP_VCALL1(flush_tlb_single, addr);
}
+static inline void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
+ unsigned long va)
+{
+ PVOP_VCALL3(flush_tlb_others, &cpumask, mm, va);
+}
+
static inline void paravirt_map_pt_hook(int type, pte_t *va, u32 pfn)
{
PVOP_VCALL3(map_pt_hook, type, va, pfn);