From: Avi Kivity <avi@qumranet.com>
Date: Thu, 7 Jun 2007 16:18:30 +0000 (+0300)
Subject: KVM: Flush remote tlbs when reducing shadow pte permissions
X-Git-Tag: v2.6.23-rc1~520^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d9e368d61263055eceac2966bb7ea31b89da3425;p=pandora-kernel.git

KVM: Flush remote tlbs when reducing shadow pte permissions

When a vcpu causes a shadow tlb entry to have reduced permissions, it
must also clear the tlb on remote vcpus.  We do that by:

- setting a bit on the vcpu that requests a tlb flush before the next entry
- if the vcpu is currently executing, we send an ipi to make sure it
  exits before we continue

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