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41 lines
1.5 KiB
41 lines
1.5 KiB
From 127f3c60668e1bd08ec00856a317cb841adf0440 Mon Sep 17 00:00:00 2001
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From: Michael Roth <michael.roth@amd.com>
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Date: Thu, 30 May 2024 06:16:23 -0500
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Subject: [PATCH 063/100] i386/cpu: Set SEV-SNP CPUID bit when SNP enabled
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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RH-MergeRequest: 245: SEV-SNP support
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RH-Jira: RHEL-39544
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Bandan Das <bdas@redhat.com>
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RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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RH-Commit: [63/91] 0f834a6897c5cdc0e29a5b1862e621f8ce309657 (bonzini/rhel-qemu-kvm)
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SNP guests will rely on this bit to determine certain feature support.
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Signed-off-by: Michael Roth <michael.roth@amd.com>
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Signed-off-by: Pankaj Gupta <pankaj.gupta@amd.com>
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Message-ID: <20240530111643.1091816-12-pankaj.gupta@amd.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit 7831221941cccbde922412c1550ed8b4bce7c361)
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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target/i386/cpu.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/target/i386/cpu.c b/target/i386/cpu.c
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index 489c853b42..13737cd703 100644
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--- a/target/i386/cpu.c
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+++ b/target/i386/cpu.c
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@@ -6822,6 +6822,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
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if (sev_enabled()) {
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*eax = 0x2;
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*eax |= sev_es_enabled() ? 0x8 : 0;
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+ *eax |= sev_snp_enabled() ? 0x10 : 0;
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*ebx = sev_get_cbit_position() & 0x3f; /* EBX[5:0] */
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*ebx |= (sev_get_reduced_phys_bits() & 0x3f) << 6; /* EBX[11:6] */
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}
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--
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2.39.3
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