diff options
| author |   Jeremy Fitzhardinge <jeremy@goop.org> | 2007-05-02 19:27:15 +0200 |
|---|---|---|
| committer |   Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:15 +0200 |
| commit | d4c104771a1c58e3de2a888b73b0ba1b54c0ae76 (patch) | |
| tree | 77ca2c6771e946aa926cb21c06702fdc7d230364 /arch/i386/kernel/paravirt.c | |
| parent | [PATCH] i386: PARAVIRT: add common patching machinery (diff) | |
| download | linux-dev-d4c104771a1c58e3de2a888b73b0ba1b54c0ae76.tar.xz linux-dev-d4c104771a1c58e3de2a888b73b0ba1b54c0ae76.zip | |
[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 'arch/i386/kernel/paravirt.c')
| -rw-r--r-- | arch/i386/kernel/paravirt.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/i386/kernel/paravirt.c b/arch/i386/kernel/paravirt.c index b0ed163e6f70..c7f0cf92925f 100644 --- a/arch/i386/kernel/paravirt.c +++ b/arch/i386/kernel/paravirt.c @@ -300,6 +300,7 @@ struct paravirt_ops paravirt_ops = { .flush_tlb_user = native_flush_tlb, .flush_tlb_kernel = native_flush_tlb_global, .flush_tlb_single = native_flush_tlb_single, + .flush_tlb_others = native_flush_tlb_others, .map_pt_hook = paravirt_nop, |