From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Tue, 28 Oct 2008 20:16:58 +0000 (-0200)
Subject: KVM: MMU: increase per-vcpu rmap cache alloc size
X-Git-Tag: v2.6.28-rc5~75^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c41ef344de212bd918f7765af21b5008628c03e0;p=pandora-kernel.git

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

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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