diff options
| author | Marcelo Tosatti <mtosatti@redhat.com> | 2009-08-06 14:39:55 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-08 20:17:14 -0700 |
| commit | 6bbd18645e02de44d024e738bb1469ef0977f7f6 (patch) | |
| tree | c6c5495c9cdbbedc53e00704ea17bdc46572c118 | |
| parent | 12daed95faec51a60736776a35ce4b0d1541c346 (diff) | |
KVM: MMU: increase per-vcpu rmap cache alloc size
(cherry picked from commit c41ef344de212bd918f7765af21b5008628c03e0)
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/x86/kvm/mmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 19b0d691886e..0376c8e7b7d4 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -298,7 +298,7 @@ static int mmu_topup_memory_caches(struct kvm_vcpu *vcpu) if (r) goto out; r = mmu_topup_memory_cache(&vcpu->arch.mmu_rmap_desc_cache, - rmap_desc_cache, 1); + rmap_desc_cache, 4); if (r) goto out; r = mmu_topup_memory_cache_page(&vcpu->arch.mmu_page_cache, 8); |