From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Thu, 3 Jul 2008 21:33:02 +0000 (-0300)
Subject: KVM: mmu_shrink: kvm_mmu_zap_page requires slots_lock to be held
X-Git-Tag: v2.6.27-rc1~968^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a4c92880493945678315a6df810f7a21f55b985;p=pandora-kernel.git

KVM: mmu_shrink: kvm_mmu_zap_page requires slots_lock to be held

kvm_mmu_zap_page() needs slots lock held (rmap_remove->gfn_to_memslot,
for example).

Since kvm_lock spinlock is held in mmu_shrink(), do a non-blocking
down_read_trylock().

Untested.

Signed-off-by: Avi Kivity <avi@qumranet.com>
---

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