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[PATCH v3 28/49] i386/sev: Disable SMM for SNP
From: |
Michael Roth |
Subject: |
[PATCH v3 28/49] i386/sev: Disable SMM for SNP |
Date: |
Wed, 20 Mar 2024 03:39:24 -0500 |
SNP does not support SMM.
Signed-off-by: Michael Roth <michael.roth@amd.com>
---
target/i386/sev.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/target/i386/sev.c b/target/i386/sev.c
index b06c796aae..134e8f7c22 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -881,6 +881,7 @@ static int sev_kvm_init(ConfidentialGuestSupport *cgs,
Error **errp)
{
SevCommonState *sev_common = SEV_COMMON(cgs);
MachineState *ms = MACHINE(qdev_get_machine());
+ X86MachineState *x86ms = X86_MACHINE(ms);
char *devname;
int ret, fw_error, cmd;
uint32_t ebx;
@@ -1003,6 +1004,13 @@ static int sev_kvm_init(ConfidentialGuestSupport *cgs,
Error **errp)
if (sev_snp_enabled()) {
ms->require_guest_memfd = true;
+
+ if (x86ms->smm == ON_OFF_AUTO_AUTO) {
+ x86ms->smm = ON_OFF_AUTO_OFF;
+ } else if (x86ms->smm == ON_OFF_AUTO_ON) {
+ error_report("SEV-SNP does not support SMM.");
+ goto err;
+ }
}
qemu_add_vm_change_state_handler(sev_vm_state_change, sev_common);
--
2.25.1
- Re: [PATCH v3 23/49] i386/sev: Add a sev_snp_enabled() helper, (continued)
- [PATCH v3 24/49] target/i386: Add handling for KVM_X86_SNP_VM VM type, Michael Roth, 2024/03/20
- [PATCH v3 25/49] i386/sev: Skip RAMBlock notifiers for SNP, Michael Roth, 2024/03/20
- [PATCH v3 26/49] i386/sev: Skip machine-init-done notifiers for SNP, Michael Roth, 2024/03/20
- [PATCH v3 27/49] i386/sev: Set ms->require_guest_memfd for SNP, Michael Roth, 2024/03/20
- [PATCH v3 28/49] i386/sev: Disable SMM for SNP,
Michael Roth <=
- [PATCH v3 29/49] i386/sev: Don't disable block discarding for SNP, Michael Roth, 2024/03/20
- [PATCH v3 30/49] i386/cpu: Set SEV-SNP CPUID bit when SNP enabled, Michael Roth, 2024/03/20
- [PATCH v3 02/49] scripts/update-linux-headers: Add setup_data.h to import list, Michael Roth, 2024/03/20
- [PATCH v3 31/49] i386/sev: Update query-sev QAPI format to handle SEV-SNP, Michael Roth, 2024/03/20
- [PATCH v3 32/49] i386/sev: Don't return launch measurements for SEV-SNP guests, Michael Roth, 2024/03/20