Signed-off-by: Avi Kivity <[email protected]>
Index: linux-2.6/drivers/kvm/kvm_main.c
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm_main.c
+++ linux-2.6/drivers/kvm/kvm_main.c
@@ -1138,6 +1138,42 @@ int emulate_instruction(struct kvm_vcpu
}
EXPORT_SYMBOL_GPL(emulate_instruction);
+int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run)
+{
+ unsigned long nr, a0, a1, a2, a3, a4, a5, ret;
+
+ kvm_arch_ops->decache_regs(vcpu);
+ ret = -KVM_EINVAL;
+#ifdef CONFIG_X86_64
+ if (is_long_mode(vcpu)) {
+ nr = vcpu->regs[VCPU_REGS_RAX];
+ a0 = vcpu->regs[VCPU_REGS_RDI];
+ a1 = vcpu->regs[VCPU_REGS_RSI];
+ a2 = vcpu->regs[VCPU_REGS_RDX];
+ a3 = vcpu->regs[VCPU_REGS_RCX];
+ a4 = vcpu->regs[VCPU_REGS_R8];
+ a5 = vcpu->regs[VCPU_REGS_R9];
+ } else
+#endif
+ {
+ nr = vcpu->regs[VCPU_REGS_RBX] & -1u;
+ a0 = vcpu->regs[VCPU_REGS_RAX] & -1u;
+ a1 = vcpu->regs[VCPU_REGS_RCX] & -1u;
+ a2 = vcpu->regs[VCPU_REGS_RDX] & -1u;
+ a3 = vcpu->regs[VCPU_REGS_RSI] & -1u;
+ a4 = vcpu->regs[VCPU_REGS_RDI] & -1u;
+ a5 = vcpu->regs[VCPU_REGS_RBP] & -1u;
+ }
+ switch (nr) {
+ default:
+ ;
+ }
+ vcpu->regs[VCPU_REGS_RAX] = ret;
+ kvm_arch_ops->cache_regs(vcpu);
+ return 1;
+}
+EXPORT_SYMBOL_GPL(kvm_hypercall);
+
static u64 mk_cr_64(u64 curr_cr, u32 new_val)
{
return (curr_cr & ~((1ULL << 32) - 1)) | new_val;
Index: linux-2.6/drivers/kvm/kvm.h
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm.h
+++ linux-2.6/drivers/kvm/kvm.h
@@ -482,6 +482,8 @@ void kvm_mmu_post_write(struct kvm_vcpu
int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
+int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
+
static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
u32 error_code)
{
Index: linux-2.6/drivers/kvm/svm.c
===================================================================
--- linux-2.6.orig/drivers/kvm/svm.c
+++ linux-2.6/drivers/kvm/svm.c
@@ -1078,16 +1078,8 @@ static int halt_interception(struct kvm_
static int vmmcall_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
- printk(KERN_DEBUG "got vmmcall at RIP %08llx\n",
- vcpu->svm->vmcb->save.rip);
- printk(KERN_DEBUG "vmmcall params: %08llx, %08lx, %08lx, %08lx\n",
- vcpu->svm->vmcb->save.rax,
- vcpu->regs[VCPU_REGS_RCX],
- vcpu->regs[VCPU_REGS_RDX],
- vcpu->regs[VCPU_REGS_RBP]);
- vcpu->svm->vmcb->save.rax = 0;
vcpu->svm->vmcb->save.rip += 3;
- return 1;
+ return kvm_hypercall(vcpu, kvm_run);
}
static int invalid_op_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
Index: linux-2.6/drivers/kvm/vmx.c
===================================================================
--- linux-2.6.orig/drivers/kvm/vmx.c
+++ linux-2.6/drivers/kvm/vmx.c
@@ -1659,16 +1659,8 @@ static int handle_halt(struct kvm_vcpu *
static int handle_vmcall(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
{
- kvm_run->exit_reason = KVM_EXIT_DEBUG;
- printk(KERN_DEBUG "got vmcall at RIP %08lx\n", vmcs_readl(GUEST_RIP));
- printk(KERN_DEBUG "vmcall params: %08lx, %08lx, %08lx, %08lx\n",
- vcpu->regs[VCPU_REGS_RAX],
- vcpu->regs[VCPU_REGS_RCX],
- vcpu->regs[VCPU_REGS_RDX],
- vcpu->regs[VCPU_REGS_RBP]);
- vcpu->regs[VCPU_REGS_RAX] = 0;
vmcs_writel(GUEST_RIP, vmcs_readl(GUEST_RIP)+3);
- return 1;
+ return kvm_hypercall(vcpu, kvm_run);
}
/*
-
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