On 3/4/22 20:49, isaku.yamahata@xxxxxxxxx wrote:
From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
Wire up TDX PV report fatal error hypercall to KVM_SYSTEM_EVENT_CRASH KVM
exit event.
Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
---
arch/x86/kvm/vmx/tdx.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c
index 123d4322da99..4d668a6c7dc9 100644
--- a/arch/x86/kvm/vmx/tdx.c
+++ b/arch/x86/kvm/vmx/tdx.c
@@ -1157,6 +1157,15 @@ static int tdx_emulate_wrmsr(struct kvm_vcpu *vcpu)
return 1;
}
+static int tdx_report_fatal_error(struct kvm_vcpu *vcpu)
+{
+ /* Exit to userspace device model for teardown. */
+ vcpu->run->exit_reason = KVM_EXIT_SYSTEM_EVENT;
+ vcpu->run->system_event.type = KVM_SYSTEM_EVENT_CRASH;
+ vcpu->run->system_event.flags = tdvmcall_p1_read(vcpu);
+ return 0;
+}
With the latest SEV changes we have a data[] member. Please set type
instead to KVM_SYSTEM_EVENT_CRASH|KVM_SYSTEM_EVENT_NDATA_VALID and ndata
to 1, so that the value of p1 (which will be a0 in the next series) can
go in data[0].
Paolo
