From: Eddie Dong <[EMAIL PROTECTED]> Host side TLB flush can be merged together if multiple spte need to be write-protected.
Signed-off-by: Yaozu (Eddie) Dong <[EMAIL PROTECTED]> Signed-off-by: Avi Kivity <[EMAIL PROTECTED]> --- arch/x86/kvm/mmu.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 401eb7c..9a57e1a 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -513,6 +513,7 @@ static void rmap_write_protect(struct kvm *kvm, u64 gfn) { unsigned long *rmapp; u64 *spte; + int write_protected = 0; gfn = unalias_gfn(kvm, gfn); rmapp = gfn_to_rmap(kvm, gfn); @@ -522,11 +523,14 @@ static void rmap_write_protect(struct kvm *kvm, u64 gfn) BUG_ON(!spte); BUG_ON(!(*spte & PT_PRESENT_MASK)); rmap_printk("rmap_write_protect: spte %p %llx\n", spte, *spte); - if (is_writeble_pte(*spte)) + if (is_writeble_pte(*spte)) { set_shadow_pte(spte, *spte & ~PT_WRITABLE_MASK); - kvm_flush_remote_tlbs(kvm); + write_protected = 1; + } spte = rmap_next(kvm, rmapp, spte); } + if (write_protected) + kvm_flush_remote_tlbs(kvm); } #ifdef MMU_DEBUG -- 1.5.3.7 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel