From: Avi Kivity <avi@redhat.com>
Date: Tue, 4 May 2010 09:58:32 +0000 (+0300)
Subject: KVM: MMU: Don't read pdptrs with mmu spinlock held in mmu_alloc_roots
X-Git-Tag: v2.6.35-rc1~436^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8facbbff071ff2b19268d3732e31badc60471e21;p=pandora-kernel.git

KVM: MMU: Don't read pdptrs with mmu spinlock held in mmu_alloc_roots

On svm, kvm_read_pdptr() may require reading guest memory, which can sleep.

Push the spinlock into mmu_alloc_roots(), and only take it after we've read
the pdptr.

Tested-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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