From: Nadav Har'El <nyh@il.ibm.com>
Date: Tue, 2 Aug 2011 12:54:52 +0000 (+0300)
Subject: KVM: nVMX: Fix nested VMX TSC emulation
X-Git-Tag: v3.2-rc1~119^2~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=27fc51b21cea3386a6672699631975d1097f9d39;p=pandora-kernel.git

KVM: nVMX: Fix nested VMX TSC emulation

This patch fixes two corner cases in nested (L2) handling of TSC-related
issues:

1. Somewhat suprisingly, according to the Intel spec, if L1 allows WRMSR to
the TSC MSR without an exit, then this should set L1's TSC value itself - not
offset by vmcs12.TSC_OFFSET (like was wrongly done in the previous code).

2. Allow L1 to disable the TSC_OFFSETING control, and then correctly ignore
the vmcs12.TSC_OFFSET.

Signed-off-by: Nadav Har'El <nyh@il.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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