From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 29 Aug 2014 16:56:01 +0000 (+0200)
Subject: KVM: x86: use guest maxphyaddr to check MTRR values
X-Git-Tag: fixes-for-v3.18-merge-window~23^2~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd2752352bbc98850d83b5448a288d8991590317;p=pandora-kernel.git

KVM: x86: use guest maxphyaddr to check MTRR values

The check introduced in commit d7a2a246a1b5 (KVM: x86: #GP when attempts to write reserved bits of Variable Range MTRRs, 2014-08-19)
will break if the guest maxphyaddr is higher than the host's (which
sometimes happens depending on your hardware and how QEMU is
configured).

To fix this, use cpuid_maxphyaddr similar to how the APIC_BASE MSR
does already.

Reported-by: Jan Kiszka <jan.kiszka@siemens.com>
Tested-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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