From: Brijesh Singh <brijesh.si...@amd.com>
The SNP_LAUNCH_START is called first to create a cryptographic launch
context within the firmware.
Signed-off-by: Brijesh Singh <brijesh.si...@amd.com>
Signed-off-by: Michael Roth <michael.r...@amd.com>
Co-developed-by: Pankaj Gupta <pankaj.gu...@amd.com>
Signed-off-by: Pankaj Gupta <pankaj.gu...@amd.com>
Message-ID: <20240530111643.1091816-16-pankaj.gu...@amd.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
target/i386/sev.c | 39 +++++++++++++++++++++++++++++++++++++++
target/i386/trace-events | 1 +
2 files changed, 40 insertions(+)
diff --git a/target/i386/sev.c b/target/i386/sev.c
index 43d1c48bd9e..e89b87d2f55 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -39,6 +39,7 @@
#include "confidential-guest.h"
#include "hw/i386/pc.h"
#include "exec/address-spaces.h"
+#include "qemu/queue.h"
OBJECT_DECLARE_TYPE(SevCommonState, SevCommonStateClass, SEV_COMMON)
OBJECT_DECLARE_TYPE(SevGuestState, SevCommonStateClass, SEV_GUEST)
@@ -115,6 +116,16 @@ struct SevSnpGuestState {
#define DEFAULT_SEV_DEVICE "/dev/sev"
#define DEFAULT_SEV_SNP_POLICY 0x30000
+typedef struct SevLaunchUpdateData {
+ QTAILQ_ENTRY(SevLaunchUpdateData) next;
+ hwaddr gpa;
+ void *hva;
+ uint64_t len;
+ int type;
+} SevLaunchUpdateData;
+
+static QTAILQ_HEAD(, SevLaunchUpdateData) launch_update;
+
#define SEV_INFO_BLOCK_GUID "00f771de-1a7e-4fcb-890e-68c77e2fb44e"
typedef struct __attribute__((__packed__)) SevInfoBlock {
/* SEV-ES Reset Vector Address */
@@ -674,6 +685,31 @@ sev_read_file_base64(const char *filename, guchar **data,
gsize *len)
return 0;
}
+static int
+sev_snp_launch_start(SevCommonState *sev_common)
+{
+ int fw_error, rc;
+ SevSnpGuestState *sev_snp_guest = SEV_SNP_GUEST(sev_common);
+ struct kvm_sev_snp_launch_start *start = &sev_snp_guest->kvm_start_conf;
+
+ trace_kvm_sev_snp_launch_start(start->policy,
+ sev_snp_guest->guest_visible_workarounds);
+
+ rc = sev_ioctl(sev_common->sev_fd, KVM_SEV_SNP_LAUNCH_START,
+ start, &fw_error);
+ if (rc < 0) {
+ error_report("%s: SNP_LAUNCH_START ret=%d fw_error=%d '%s'",
+ __func__, rc, fw_error, fw_error_to_str(fw_error));
+ return 1;
+ }
+
+ QTAILQ_INIT(&launch_update);
+
+ sev_set_guest_state(sev_common, SEV_STATE_LAUNCH_UPDATE);
+
+ return 0;
+}
+
static int
sev_launch_start(SevCommonState *sev_common)
{
@@ -1003,6 +1039,7 @@ static int sev_common_kvm_init(ConfidentialGuestSupport
*cgs, Error **errp)
}
ret = klass->launch_start(sev_common);
+
if (ret) {
error_setg(errp, "%s: failed to create encryption context", __func__);
return -1;
@@ -1794,9 +1831,11 @@ sev_snp_guest_class_init(ObjectClass *oc, void *data)
SevCommonStateClass *klass = SEV_COMMON_CLASS(oc);
X86ConfidentialGuestClass *x86_klass = X86_CONFIDENTIAL_GUEST_CLASS(oc);
+ klass->launch_start = sev_snp_launch_start;
klass->kvm_init = sev_snp_kvm_init;
x86_klass->kvm_type = sev_snp_kvm_type;
+
object_class_property_add(oc, "policy", "uint64",
sev_snp_guest_get_policy,
sev_snp_guest_set_policy, NULL, NULL);
diff --git a/target/i386/trace-events b/target/i386/trace-events
index 2cd8726eebb..cb26d8a9257 100644
--- a/target/i386/trace-events
+++ b/target/i386/trace-events
@@ -11,3 +11,4 @@ kvm_sev_launch_measurement(const char *value) "data %s"
kvm_sev_launch_finish(void) ""
kvm_sev_launch_secret(uint64_t hpa, uint64_t hva, uint64_t secret, int len)
"hpa 0x%" PRIx64 " hva 0x%" PRIx64 " data 0x%" PRIx64 " len %d"
kvm_sev_attestation_report(const char *mnonce, const char *data) "mnonce %s
data %s"
+kvm_sev_snp_launch_start(uint64_t policy, char *gosvw) "policy 0x%" PRIx64 "
gosvw %s"
--
2.45.1
