[PATCH v3 01/11] KVM: SVM: Introduce __set_intercept, __clr_intercept and __is_intercept

Babu Moger
2020-07-28T23:38:01Z

This is in preparation for the future intercept vector additions.

Add new functions __set_intercept, __clr_intercept and __is_intercept
using kernel APIs __set_bit, __clear_bit and test_bit espectively.

Signed-off-by: Babu Moger <babu.moger@amd.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 6ac4c00a5d82..3b669718190a 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -217,6 +217,21 @@ static inline struct vmcb *get_host_vmcb(struct vcpu_svm *svm)
return svm->vmcb;
}

+static inline void __set_intercept(void *addr, int bit)
+{
+ __set_bit(bit, (unsigned long *)addr);
+}
+
+static inline void __clr_intercept(void *addr, int bit)
+{
+ __clear_bit(bit, (unsigned long *)addr);
+}
+
+static inline bool __is_intercept(void *addr, int bit)
+{
+ return test_bit(bit, (unsigned long *)addr);
+}
+
static inline void set_cr_intercept(struct vcpu_svm *svm, int bit)
{
struct vmcb *vmcb = get_host_vmcb(svm);