From: Gianluca Guida <gianluca.guida@eu.citrix.com>
To: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: AMD SVM question (svm_asid_g_invlpg)
Date: Tue, 17 Mar 2009 14:14:30 +0000 [thread overview]
Message-ID: <49BFB046.5050200@eu.citrix.com> (raw)
Hello,
SVM code doesn't use the INVLPGA instruction, but rather invalidate the
whole ASID when invalidating a guest page.
INVLPG exit is enabled only on shadow code, which is smart enough to
handle corner cases like splintered pagetables invlpg's.
Is this a workaround for some buggy hardware? Is there any problem in
enabling the INVLPGA instruction?
Thanks,
Gianluca
reply other threads:[~2009-03-17 14:14 UTC|newest]
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