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KVM: add MSR based hypercall API

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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>
This commit is contained in:
Ingo Molnar
2007-02-19 14:37:47 +02:00
committed by Avi Kivity
parent 5972e9535e
commit 102d8325a1
5 changed files with 160 additions and 0 deletions
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6
drivers/kvm/kvm.h
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@@ -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 @@ struct kvm_vcpu {
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 @@ struct kvm_arch_ops {
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;