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x86: svm: use cr_interception for SVM_EXIT_CR0_SEL_WRITE

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Another patch in my war on emulate_on_interception() use as a svm exit handler.

These were pulled out of a larger patch at the suggestion of Radim Krcmar, see
https://lkml.org/lkml/2015/2/25/559

Changes since v1:
	* fixed typo introduced after test, retested

Signed-off-by: David Kaplan <david.kaplan@amd.com>
[separated out just cr_interception part from larger removal of
INTERCEPT_CR0_WRITE, forward ported, tested]
Signed-off-by: Joel Schopp <joel.schopp@amd.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
David Kaplan 2015-03-06 14:44:35 -06:00 committed by Marcelo Tosatti
parent 2b25385761
commit 5e57518d99
1 changed files with 5 additions and 2 deletions
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7
arch/x86/kvm/svm.c
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@ -2944,7 +2944,10 @@ static int cr_interception(struct vcpu_svm *svm)
return emulate_on_interception(svm);
reg = svm->vmcb->control.exit_info_1 & SVM_EXITINFO_REG_MASK;
cr = svm->vmcb->control.exit_code - SVM_EXIT_READ_CR0;
if (svm->vmcb->control.exit_code == SVM_EXIT_CR0_SEL_WRITE)
cr = SVM_EXIT_WRITE_CR0 - SVM_EXIT_READ_CR0;
else
cr = svm->vmcb->control.exit_code - SVM_EXIT_READ_CR0;
err = 0;
if (cr >= 16) { /* mov to cr */
@ -3328,7 +3331,7 @@ static int (*const svm_exit_handlers[])(struct vcpu_svm *svm) = {
[SVM_EXIT_READ_CR3] = cr_interception,
[SVM_EXIT_READ_CR4] = cr_interception,
[SVM_EXIT_READ_CR8] = cr_interception,
[SVM_EXIT_CR0_SEL_WRITE] = emulate_on_interception,
[SVM_EXIT_CR0_SEL_WRITE] = cr_interception,
[SVM_EXIT_WRITE_CR0] = cr_interception,
[SVM_EXIT_WRITE_CR3] = cr_interception,
[SVM_EXIT_WRITE_CR4] = cr_interception,