On 03/02/21 12:34, Yang Weijiang wrote:
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 22eb6b8626a8..f63b713cd71f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8592,6 +8592,16 @@ static void enter_smm_save_state_64(struct kvm_vcpu *vcpu, char *buf)
for (i = 0; i < 6; i++)
enter_smm_save_seg_64(vcpu, buf, i);
+
+ if (kvm_cet_supported()) {
+ struct msr_data msr;
+
+ msr.index = MSR_KVM_GUEST_SSP;
+ msr.host_initiated = true;
+ /* GUEST_SSP is stored in VMCS at vm-exit. */
+ kvm_x86_ops.get_msr(vcpu, &msr);
+ put_smstate(u64, buf, 0x7ec8, msr.data);
+ }
}
#endif
0x7ec8 is used for I/O instruction restart and auto-halt restart.
0x7f08 is a free spot. We should really document the KVM state save
area format.
Paolo
