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SVM: fix performance decrease with asid assignment
authorChristoph Egger <Christoph.Egger@amd.com>
Wed, 13 Jun 2012 09:51:26 +0000 (11:51 +0200)
committerChristoph Egger <Christoph.Egger@amd.com>
Wed, 13 Jun 2012 09:51:26 +0000 (11:51 +0200)
commit0cdb73707d054a60d9ac8cc16fb72caea0a8d395
tree59943ca3c732f5529b5aec20315d111f0fc7d8fctree | snapshot
parent3a07eef100625b43bf2b63c34a1c32d823f7764bcommit | diff
SVM: fix performance decrease with asid assignment

Do not clear asid cleanbit unconditionally. This shaves off 100 cycles
from the VMRUN instruction.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
xen/arch/x86/hvm/svm/asid.c diff | blob | history
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