[PATCH 60/60] kvm: svm: Advertise full multi-VMPL support to the SNP guest

Jörg Rödel <[email protected]> Mon, 8 Jun 2026 16:42:52 +0200
Newsgroups dev.linux.lists.coconut-svsm,dev.linux.lists.kvmarm,dev.linux.lists.loongarch,org.infradead.lists.kvm-riscv,org.kernel.vger.kvm,org.kernel.vger.linux-kernel,org.kernel.vger.linux-mips,org.ozlabs.lists.linuxppc-dev
Message-ID <[email protected]>
From: Tom Lendacky <[email protected]>

Indicate full multi-VMPL support to the guest through the GHCB feature
bitmap.

Signed-off-by: Tom Lendacky <[email protected]>
Co-developed-by: Joerg Roedel <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>
---
 arch/x86/kvm/svm/sev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 528c8bd3e8fc..0736e1c778d9 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -43,7 +43,8 @@
 #define GHCB_HV_FT_SUPPORTED	(GHCB_HV_FT_SNP			| \
 				 GHCB_HV_FT_SNP_AP_CREATION	| \
 				 GHCB_HV_FT_SNP_RINJ		| \
-				 GHCB_HV_FT_APIC_ID_LIST)
+				 GHCB_HV_FT_APIC_ID_LIST	| \
+				 GHCB_HV_FT_SNP_MULTI_VMPL)
 
 /*
  * The GHCB spec essentially states that all non-zero error codes other than
-- 
2.53.0