[PATCH v6 01/12] KVM: SVM: Introduce vmcb_(set_intercept/clr_intercept/_is_intercept)

Babu Moger
2020-09-11T19:35:08Z

This is in preparation for the future intercept vector additions.

Add new functions vmcb_set_intercept, vmcb_clr_intercept and vmcb_is_intercept
using kernel APIs __set_bit, __clear_bit and test_bit espectively.

Signed-off-by: Babu Moger <babu.moger@amd.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
---
arch/x86/kvm/svm/svm.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index a798e1731709..1cff7644e70b 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -214,6 +214,21 @@ static inline struct vmcb *get_host_vmcb(struct vcpu_svm *svm)
return svm->vmcb;
}

+static inline void vmcb_set_intercept(struct vmcb_control_area *control, int bit)
+{
+ __set_bit(bit, (unsigned long *)&control->intercept_cr);
+}
+
+static inline void vmcb_clr_intercept(struct vmcb_control_area *control, int bit)
+{
+ __clear_bit(bit, (unsigned long *)&control->intercept_cr);
+}
+
+static inline bool vmcb_is_intercept(struct vmcb_control_area *control, int bit)
+{
+ return test_bit(bit, (unsigned long *)&control->intercept_cr);
+}
+
static inline void set_cr_intercept(struct vcpu_svm *svm, int bit)
{
struct vmcb *vmcb = get_host_vmcb(svm);