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[v4,5/5] KVM: SVM: Increase supported GHCB protocol version

Message ID 20210929155330.5597-6-joro@8bytes.org (mailing list archive)
State New, archived
Headers show
Series KVM: SVM: Add initial GHCB protocol version 2 support | expand

Commit Message

Joerg Roedel Sept. 29, 2021, 3:53 p.m. UTC 
From: Brijesh Singh <brijesh.singh@amd.com>

Now that KVM has basic support for version 2 of the GHCB specification,
bump the maximum supported protocol version. The SNP specific functions
are still missing, but those are only required when the Hypervisor
supports running SNP guests.

Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 arch/x86/kvm/svm/sev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 22523ec08a7b..d2e03dc72558 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -2394,7 +2394,7 @@  static u64 ghcb_msr_cpuid_resp(u64 reg, u64 value)
 }
 
 /* The min/max GHCB version supported by KVM. */
-#define GHCB_VERSION_MAX	1ULL
+#define GHCB_VERSION_MAX	2ULL
 #define GHCB_VERSION_MIN	1ULL
 
 static u64 ghcb_msr_version_info(void)