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KVM: MMU: Allow more than PAGES_PER_HPAGE write protections per large page
author
Avi Kivity
<avi@qumranet.com>
Fri, 2 May 2008 10:23:10 +0000
(13:23 +0300)
committer
Avi Kivity
<avi@qumranet.com>
Sun, 4 May 2008 11:44:49 +0000
(14:44 +0300)
nonpae guests can call rmap_write_protect twice per page (for page tables)
or four times per page (for page directories), triggering a bogus warning.
Remove the warning.
Signed-off-by: Avi Kivity <avi@qumranet.com>
arch/x86/kvm/mmu.c
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diff --git
a/arch/x86/kvm/mmu.c
b/arch/x86/kvm/mmu.c
index
d9344be
..
36c5406
100644
(file)
--- a/
arch/x86/kvm/mmu.c
+++ b/
arch/x86/kvm/mmu.c
@@
-376,7
+376,6
@@
static void account_shadowed(struct kvm *kvm, gfn_t gfn)
write_count = slot_largepage_idx(gfn, gfn_to_memslot(kvm, gfn));
*write_count += 1;
- WARN_ON(*write_count > KVM_PAGES_PER_HPAGE);
}
static void unaccount_shadowed(struct kvm *kvm, gfn_t gfn)