On 9/23/15 4:39 PM, Paolo Bonzini wrote:
On 23/09/2015 09:59, Wanpeng Li wrote:
Add the INVVPID instruction emulation.
Reviewed-by: Wincy Van <fanwenyi0...@gmail.com>
Signed-off-by: Wanpeng Li <wanpeng...@hotmail.com>
---
arch/x86/include/asm/vmx.h | 1 +
arch/x86/kvm/vmx.c | 23 ++++++++++++++++++++++-
2 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
index d25f32a..69f3d71 100644
--- a/arch/x86/include/asm/vmx.h
+++ b/arch/x86/include/asm/vmx.h
@@ -397,6 +397,7 @@ enum vmcs_field {
#define IDENTITY_PAGETABLE_PRIVATE_MEMSLOT (KVM_USER_MEM_SLOTS + 2)
#define VMX_NR_VPIDS (1 << 16)
+#define VMX_VPID_EXTENT_INDIVIDUAL_ADDR 0
#define VMX_VPID_EXTENT_SINGLE_CONTEXT 1
#define VMX_VPID_EXTENT_ALL_CONTEXT 2
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 6ad991a..794c529 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -7189,7 +7189,28 @@ static int handle_invept(struct kvm_vcpu *vcpu)
static int handle_invvpid(struct kvm_vcpu *vcpu)
{
- kvm_queue_exception(vcpu, UD_VECTOR);
+ u32 vmx_instruction_info;
+ unsigned long type;
+
+ if (!nested_vmx_check_permission(vcpu))
+ return 1;
+
+ vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
+ type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf);
+
+ switch (type) {
+ case VMX_VPID_EXTENT_INDIVIDUAL_ADDR:
+ case VMX_VPID_EXTENT_SINGLE_CONTEXT:
+ case VMX_VPID_EXTENT_ALL_CONTEXT:
+ vmx_flush_tlb(vcpu);
+ nested_vmx_succeed(vcpu);
+ break;
+ default:
+ nested_vmx_failInvalid(vcpu);
+ break;
+ }
+
+ skip_emulated_instruction(vcpu);
return 1;
}
This is not enough. You need to add a VPID argument to
vpid_sync_vcpu_single, and inline vmx_flush_tlb in handle_invvpid so
that it can use the new VPID argument of vpid_sync_vcpu_single.
Note that the "all context" variant can be mapped to
vpid_sync_vcpu_single with vpid02 as the argument (a nice side effect of
your vpid02 design).
Got it. Just send out patches to handle this. :-)
Regards,
Wanpeng Li
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
