From: Dave Hansen <dave@linux.vnet.ibm.com>
Date: Thu, 6 Aug 2009 17:39:52 +0000 (-0300)
Subject: KVM: Reduce stack usage in kvm_pv_mmu_op()
X-Git-Tag: v2.6.27.32~33
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea618866ead0126be93107cdf700b43e7c1854f3;p=pandora-kernel.git

KVM: Reduce stack usage in kvm_pv_mmu_op()

(cherry picked from commit 6ad18fba05228fb1d47cdbc0339fe8b3fca1ca26)

We're in a hot path.  We can't use kmalloc() because
it might impact performance.  So, we just stick the buffer that
we need into the kvm_vcpu_arch structure.  This is used very
often, so it is not really a waste.

We also have to move the buffer structure's definition to the
arch-specific x86 kvm header.

Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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