diff mbox series

[RFC,v2,08/12] target/i386: set SEV-SNP CPUID bit when SNP enabled

Message ID 20210826222627.3556-9-michael.roth@amd.com (mailing list archive)
State New, archived
Headers show
Series Add AMD Secure Nested Paging (SEV-SNP) support | expand

Commit Message

Michael Roth Aug. 26, 2021, 10:26 p.m. UTC 
SNP guests will rely on this bit to determine certain feature support.

Signed-off-by: Michael Roth <michael.roth@amd.com>
---
 target/i386/cpu.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 97e250e876..f0b441f692 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5619,6 +5619,7 @@  void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
     case 0x8000001F:
         *eax = sev_enabled() ? 0x2 : 0;
         *eax |= sev_es_enabled() ? 0x8 : 0;
+        *eax |= sev_snp_enabled() ? 0x10 : 0;
         *ebx = sev_get_cbit_position();
         *ebx |= sev_get_reduced_phys_bits() << 6;
         *ecx = 0;