From: Gleb Natapov <gleb@redhat.com>
Date: Wed, 8 May 2013 15:38:44 +0000 (+0300)
Subject: KVM: VMX: fix halt emulation while emulating invalid guest sate
X-Git-Tag: v3.10-rc1~11^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8d76c49e9ffeee839bc0b7a3278a23f99101263e;p=pandora-kernel.git

KVM: VMX: fix halt emulation while emulating invalid guest sate

The invalid guest state emulation loop does not check halt_request
which causes 100% cpu loop while guest is in halt and in invalid
state, but more serious issue is that this leaves halt_request set, so
random instruction emulated by vm86 #GP exit can be interpreted
as halt which causes guest hang. Fix both problems by handling
halt_request in emulation loop.

Reported-by: Tomas Papan <tomas.papan@gmail.com>
Tested-by: Tomas Papan <tomas.papan@gmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
CC: stable@vger.kernel.org
Signed-off-by: Gleb Natapov <gleb@redhat.com>
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