KVM: add MSR based hypercall API
This adds a special MSR based hypercall API to KVM. This is to be
used by paravirtual kernels and virtual drivers.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index 9a49b2e..fd7746a 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -14,6 +14,7 @@
#include "vmx.h"
#include <linux/kvm.h>
+#include <linux/kvm_para.h>
#define CR0_PE_MASK (1ULL << 0)
#define CR0_TS_MASK (1ULL << 3)
@@ -237,6 +238,9 @@
unsigned long cr0;
unsigned long cr2;
unsigned long cr3;
+ gpa_t para_state_gpa;
+ struct page *para_state_page;
+ gpa_t hypercall_gpa;
unsigned long cr4;
unsigned long cr8;
u64 pdptrs[4]; /* pae */
@@ -382,6 +386,8 @@
int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
int (*vcpu_setup)(struct kvm_vcpu *vcpu);
void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
+ void (*patch_hypercall)(struct kvm_vcpu *vcpu,
+ unsigned char *hypercall_addr);
};
extern struct kvm_stat kvm_stat;