To enable proper debug register emulation under all conditions, trap
access to all DR0..7. This may be optimized later on.
Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
---
arch/x86/kvm/svm.c | 14 +++++++++++++-
1 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 4295dfc..a281368 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -554,13 +554,19 @@ static void init_vmcb(struct vcpu_svm *svm)
control->intercept_dr_read = INTERCEPT_DR0_MASK |
INTERCEPT_DR1_MASK |
INTERCEPT_DR2_MASK |
- INTERCEPT_DR3_MASK;
+ INTERCEPT_DR3_MASK |
+ INTERCEPT_DR4_MASK |
+ INTERCEPT_DR5_MASK |
+ INTERCEPT_DR6_MASK |
+ INTERCEPT_DR7_MASK;
control->intercept_dr_write = INTERCEPT_DR0_MASK |
INTERCEPT_DR1_MASK |
INTERCEPT_DR2_MASK |
INTERCEPT_DR3_MASK |
+ INTERCEPT_DR4_MASK |
INTERCEPT_DR5_MASK |
+ INTERCEPT_DR6_MASK |
INTERCEPT_DR7_MASK;
control->intercept_exceptions = (1 << PF_VECTOR) |
@@ -2319,11 +2325,17 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm)
= {
[SVM_EXIT_READ_DR1] = emulate_on_interception,
[SVM_EXIT_READ_DR2] = emulate_on_interception,
[SVM_EXIT_READ_DR3] = emulate_on_interception,
+ [SVM_EXIT_READ_DR4] = emulate_on_interception,
+ [SVM_EXIT_READ_DR5] = emulate_on_interception,
+ [SVM_EXIT_READ_DR6] = emulate_on_interception,
+ [SVM_EXIT_READ_DR7] = emulate_on_interception,
[SVM_EXIT_WRITE_DR0] = emulate_on_interception,
[SVM_EXIT_WRITE_DR1] = emulate_on_interception,
[SVM_EXIT_WRITE_DR2] = emulate_on_interception,
[SVM_EXIT_WRITE_DR3] = emulate_on_interception,
+ [SVM_EXIT_WRITE_DR4] = emulate_on_interception,
[SVM_EXIT_WRITE_DR5] = emulate_on_interception,
+ [SVM_EXIT_WRITE_DR6] = emulate_on_interception,
[SVM_EXIT_WRITE_DR7] = emulate_on_interception,
[SVM_EXIT_EXCP_BASE + DB_VECTOR] = db_interception,
[SVM_EXIT_EXCP_BASE + BP_VECTOR] = bp_interception,
--
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