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55 lines
1.8 KiB
55 lines
1.8 KiB
2 months ago
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From 0612c7ed587422ec7e07c27c8ca11b89c7aa8b02 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 06:16:43 -0500
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Subject: [PATCH 077/100] i386/sev: Enable KVM_HC_MAP_GPA_RANGE hcall for SNP
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guests
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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: [77/91] 3c494eb54499c24121cc2c47045626478b8bb41e (bonzini/rhel-qemu-kvm)
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KVM will forward GHCB page-state change requests to userspace in the
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form of KVM_HC_MAP_GPA_RANGE, so make sure the hypercall handling is
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enabled for SNP guests.
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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: <20240530111643.1091816-32-pankaj.gupta@amd.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit e3cddff93c1f88fea3b26841e792dc0be6b6fae8)
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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target/i386/sev.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/target/i386/sev.c b/target/i386/sev.c
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index eaf5fc6c6b..abb63062ac 100644
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--- a/target/i386/sev.c
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+++ b/target/i386/sev.c
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@@ -14,6 +14,7 @@
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#include "qemu/osdep.h"
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#include <linux/kvm.h>
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+#include <linux/kvm_para.h>
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#include <linux/psp-sev.h>
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#include <sys/ioctl.h>
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@@ -758,6 +759,10 @@ sev_snp_launch_start(SevCommonState *sev_common)
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trace_kvm_sev_snp_launch_start(start->policy,
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sev_snp_guest->guest_visible_workarounds);
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+ if (!kvm_enable_hypercall(BIT_ULL(KVM_HC_MAP_GPA_RANGE))) {
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+ return 1;
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+ }
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+
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rc = sev_ioctl(sev_common->sev_fd, KVM_SEV_SNP_LAUNCH_START,
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start, &fw_error);
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if (rc < 0) {
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--
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2.39.3
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