KVM: MMU: increase per-vcpu rmap cache alloc size

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The page fault path can use two rmap_desc structures, if:

- walk_addr's dirty pte update allocates one rmap_desc.
- mmu_lock is dropped, sptes are zapped resulting in rmap_desc being
freed.
- fetch->mmu_set_spte allocates another rmap_desc.

Increase to 4 for safety.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Marcelo Tosatti 2008-10-28 18:16:58 -02:00 • committed by Avi Kivity

parent 3ad4f59705

commit c41ef344de

1 changed files with 1 additions and 1 deletions

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arch/x86/kvm/mmu.c

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