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KVM: SVM: Add intercept check for accessing dr registers

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This patch adds the intercept checks for instruction
accessing the debug registers.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel
2011-04-04 12:39:29 +02:00
committed by Avi Kivity
parent cfec82cb7d
commit 3b88e41a41
3 changed files with 56 additions and 15 deletions
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6
arch/x86/kvm/svm.c
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@@ -3882,6 +3882,8 @@ static struct __x86_intercept {
[x86_intercept_clts] = POST_EX(SVM_EXIT_WRITE_CR0),
[x86_intercept_lmsw] = POST_EX(SVM_EXIT_WRITE_CR0),
[x86_intercept_smsw] = POST_EX(SVM_EXIT_READ_CR0),
[x86_intercept_dr_read] = POST_EX(SVM_EXIT_READ_DR0),
[x86_intercept_dr_write] = POST_EX(SVM_EXIT_WRITE_DR0),
};
#undef POST_EX
@@ -3939,6 +3941,10 @@ static int svm_check_intercept(struct kvm_vcpu *vcpu,
break;
}
case SVM_EXIT_READ_DR0:
case SVM_EXIT_WRITE_DR0:
icpt_info.exit_code += info->modrm_reg;
break;
default:
break;
}