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i386/sev: Enable KVM_HC_MAP_GPA_RANGE hcall for SNP guests 

KVM will forward GHCB page-state change requests to userspace in the
form of KVM_HC_MAP_GPA_RANGE, so make sure the hypercall handling is
enabled for SNP guests.

Signed-off-by: Michael Roth <michael.roth@amd.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@amd.com>
Message-ID: <20240530111643.1091816-32-pankaj.gupta@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Michael Roth 2024-05-30 06:16:43 -05:00 committed by Paolo Bonzini
parent 47e76d03b1
commit e3cddff93c
1 changed files with 5 additions and 0 deletions
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5
target/i386/sev.c
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@ -14,6 +14,7 @@
#include "qemu/osdep.h"
#include <linux/kvm.h>
#include <linux/kvm_para.h>
#include <linux/psp-sev.h>
#include <sys/ioctl.h>
@ -758,6 +759,10 @@ sev_snp_launch_start(SevCommonState *sev_common)
trace_kvm_sev_snp_launch_start(start->policy,
sev_snp_guest->guest_visible_workarounds);
if (!kvm_enable_hypercall(BIT_ULL(KVM_HC_MAP_GPA_RANGE))) {
return 1;
}
rc = sev_ioctl(sev_common->sev_fd, KVM_SEV_SNP_LAUNCH_START,
start, &fw_error);
if (rc < 0) {