File d4005609-qemu-query-sev-caps.patch of Package libvirt.16766
commit d4005609f3806f3ee4ad7e39cba0c887baf462a5
Author: Brijesh Singh <brijesh.singh@amd.com>
Date: Fri Jun 8 09:40:51 2018 -0500
qemu: Provide support to query the SEV capability
QEMU version >= 2.12 provides support for launching an encrypted VMs on
AMD x86 platform using Secure Encrypted Virtualization (SEV) feature.
This patch adds support to query the SEV capability from the qemu.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Index: libvirt-4.0.0/src/conf/domain_capabilities.c
===================================================================
--- libvirt-4.0.0.orig/src/conf/domain_capabilities.c
+++ libvirt-4.0.0/src/conf/domain_capabilities.c
@@ -74,6 +74,18 @@ virDomainCapsStringValuesFree(virDomainC
}
+void
+virSEVCapabilitiesFree(virSEVCapability *cap)
+{
+ if (!cap)
+ return;
+
+ VIR_FREE(cap->pdh);
+ VIR_FREE(cap->cert_chain);
+ VIR_FREE(cap);
+}
+
+
static void
virDomainCapsDispose(void *obj)
{
Index: libvirt-4.0.0/src/conf/domain_capabilities.h
===================================================================
--- libvirt-4.0.0.orig/src/conf/domain_capabilities.h
+++ libvirt-4.0.0/src/conf/domain_capabilities.h
@@ -137,6 +137,15 @@ struct _virDomainCapsCPU {
virDomainCapsCPUModelsPtr custom;
};
+typedef struct _virSEVCapability virSEVCapability;
+typedef virSEVCapability *virSEVCapabilityPtr;
+struct _virSEVCapability {
+ char *pdh;
+ char *cert_chain;
+ unsigned int cbitpos;
+ unsigned int reduced_phys_bits;
+};
+
struct _virDomainCaps {
virObjectLockable parent;
@@ -199,4 +208,7 @@ int virDomainCapsEnumSet(virDomainCapsEn
void virDomainCapsEnumClear(virDomainCapsEnumPtr capsEnum);
char * virDomainCapsFormat(virDomainCapsPtr const caps);
+
+void
+virSEVCapabilitiesFree(virSEVCapability *capabilities);
#endif /* __DOMAIN_CAPABILITIES_H__ */
Index: libvirt-4.0.0/src/libvirt_private.syms
===================================================================
--- libvirt-4.0.0.orig/src/libvirt_private.syms
+++ libvirt-4.0.0/src/libvirt_private.syms
@@ -184,6 +184,7 @@ virDomainCapsEnumClear;
virDomainCapsEnumSet;
virDomainCapsFormat;
virDomainCapsNew;
+virSEVCapabilitiesFree;
# conf/domain_conf.h
Index: libvirt-4.0.0/src/qemu/qemu_capabilities.c
===================================================================
--- libvirt-4.0.0.orig/src/qemu/qemu_capabilities.c
+++ libvirt-4.0.0/src/qemu/qemu_capabilities.c
@@ -457,6 +457,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAS
/* 280 */
"pl011",
"machine.pseries.max-cpu-compat",
+ "sev-guest",
);
@@ -522,6 +523,8 @@ struct _virQEMUCaps {
size_t ngicCapabilities;
virGICCapability *gicCapabilities;
+ virSEVCapability *sevCapabilities;
+
virQEMUCapsHostCPUData kvmCPU;
virQEMUCapsHostCPUData tcgCPU;
};
@@ -1690,6 +1693,7 @@ struct virQEMUCapsStringFlags virQEMUCap
{ "sclplmconsole", QEMU_CAPS_DEVICE_SCLPLMCONSOLE },
{ "isa-serial", QEMU_CAPS_DEVICE_ISA_SERIAL },
{ "pl011", QEMU_CAPS_DEVICE_PL011 },
+ { "sev-guest", QEMU_CAPS_SEV_GUEST },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBalloon[] = {
@@ -2804,6 +2808,16 @@ virQEMUCapsSetGICCapabilities(virQEMUCap
}
+void
+virQEMUCapsSetSEVCapabilities(virQEMUCapsPtr qemuCaps,
+ virSEVCapability *capabilities)
+{
+ virSEVCapabilitiesFree(qemuCaps->sevCapabilities);
+
+ qemuCaps->sevCapabilities = capabilities;
+}
+
+
static int
virQEMUCapsProbeQMPCommands(virQEMUCapsPtr qemuCaps,
qemuMonitorPtr mon)
@@ -3311,6 +3325,21 @@ virQEMUCapsProbeQMPGICCapabilities(virQE
}
+static int
+virQEMUCapsProbeQMPSEVCapabilities(virQEMUCapsPtr qemuCaps,
+ qemuMonitorPtr mon)
+{
+ virSEVCapability *caps = NULL;
+
+ if (qemuMonitorGetSEVCapabilities(mon, &caps) < 0)
+ return -1;
+
+ virQEMUCapsSetSEVCapabilities(qemuCaps, caps);
+
+ return 0;
+}
+
+
bool
virQEMUCapsCPUFilterFeatures(const char *name,
void *opaque)
@@ -4921,6 +4950,12 @@ virQEMUCapsInitQMPMonitor(virQEMUCapsPtr
virQEMUCapsGet(qemuCaps, QEMU_CAPS_QUERY_CPU_MODEL_EXPANSION))
virQEMUCapsSet(qemuCaps, QEMU_CAPS_CPU_CACHE);
+ /* Probe for SEV capabilities */
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_SEV_GUEST)) {
+ if (virQEMUCapsProbeQMPSEVCapabilities(qemuCaps, mon) < 0)
+ virQEMUCapsClear(qemuCaps, QEMU_CAPS_SEV_GUEST);
+ }
+
ret = 0;
cleanup:
return ret;
Index: libvirt-4.0.0/src/qemu/qemu_capabilities.h
===================================================================
--- libvirt-4.0.0.orig/src/qemu/qemu_capabilities.h
+++ libvirt-4.0.0/src/qemu/qemu_capabilities.h
@@ -443,6 +443,7 @@ typedef enum {
/* 280 */
QEMU_CAPS_DEVICE_PL011, /* -device pl011 (not user-instantiable) */
QEMU_CAPS_MACHINE_PSERIES_MAX_CPU_COMPAT, /* -machine pseries,max-cpu-compat= */
+ QEMU_CAPS_SEV_GUEST, /* -object sev-guest,... */
QEMU_CAPS_LAST /* this must always be the last item */
} virQEMUCapsFlags;
@@ -568,5 +569,4 @@ bool virQEMUCapsGuestIsNative(virArch ho
bool virQEMUCapsCPUFilterFeatures(const char *name,
void *opaque);
-
#endif /* __QEMU_CAPABILITIES_H__*/
Index: libvirt-4.0.0/src/qemu/qemu_capspriv.h
===================================================================
--- libvirt-4.0.0.orig/src/qemu/qemu_capspriv.h
+++ libvirt-4.0.0/src/qemu/qemu_capspriv.h
@@ -85,6 +85,10 @@ virQEMUCapsSetGICCapabilities(virQEMUCap
virGICCapability *capabilities,
size_t ncapabilities);
+void
+virQEMUCapsSetSEVCapabilities(virQEMUCapsPtr qemuCaps,
+ virSEVCapability *capabilities);
+
int
virQEMUCapsParseHelpStr(const char *qemu,
const char *str,
Index: libvirt-4.0.0/src/qemu/qemu_monitor.c
===================================================================
--- libvirt-4.0.0.orig/src/qemu/qemu_monitor.c
+++ libvirt-4.0.0/src/qemu/qemu_monitor.c
@@ -3977,6 +3977,16 @@ qemuMonitorGetGICCapabilities(qemuMonito
int
+qemuMonitorGetSEVCapabilities(qemuMonitorPtr mon,
+ virSEVCapability **capabilities)
+{
+ QEMU_CHECK_MONITOR(mon);
+
+ return qemuMonitorJSONGetSEVCapabilities(mon, capabilities);
+}
+
+
+int
qemuMonitorNBDServerStart(qemuMonitorPtr mon,
const char *host,
unsigned int port)
Index: libvirt-4.0.0/src/qemu/qemu_monitor.h
===================================================================
--- libvirt-4.0.0.orig/src/qemu/qemu_monitor.h
+++ libvirt-4.0.0/src/qemu/qemu_monitor.h
@@ -732,6 +732,9 @@ int qemuMonitorSetMigrationCapability(qe
int qemuMonitorGetGICCapabilities(qemuMonitorPtr mon,
virGICCapability **capabilities);
+int qemuMonitorGetSEVCapabilities(qemuMonitorPtr mon,
+ virSEVCapability **capabilities);
+
typedef enum {
QEMU_MONITOR_MIGRATE_BACKGROUND = 1 << 0,
QEMU_MONITOR_MIGRATE_NON_SHARED_DISK = 1 << 1, /* migration with non-shared storage with full disk copy */
Index: libvirt-4.0.0/src/qemu/qemu_monitor_json.c
===================================================================
--- libvirt-4.0.0.orig/src/qemu/qemu_monitor_json.c
+++ libvirt-4.0.0/src/qemu/qemu_monitor_json.c
@@ -6262,6 +6262,85 @@ qemuMonitorJSONGetGICCapabilities(qemuMo
return ret;
}
+
+int
+qemuMonitorJSONGetSEVCapabilities(qemuMonitorPtr mon,
+ virSEVCapability **capabilities)
+{
+ int ret = -1;
+ virJSONValuePtr cmd;
+ virJSONValuePtr reply = NULL;
+ virJSONValuePtr caps;
+ virSEVCapability *capability = NULL;
+ const char *pdh = NULL, *cert_chain = NULL;
+ unsigned int cbitpos, reduced_phys_bits;
+
+ *capabilities = NULL;
+
+ if (!(cmd = qemuMonitorJSONMakeCommand("query-sev-capabilities",
+ NULL)))
+ return -1;
+
+ if (qemuMonitorJSONCommand(mon, cmd, &reply) < 0)
+ goto cleanup;
+
+
+ if (qemuMonitorJSONCheckError(cmd, reply) < 0)
+ goto cleanup;
+
+ caps = virJSONValueObjectGetObject(reply, "return");
+
+ if (virJSONValueObjectGetNumberUint(caps, "cbitpos", &cbitpos) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-sev-capabilities reply was missing"
+ " 'cbitpos' field"));
+ goto cleanup;
+ }
+
+ if (virJSONValueObjectGetNumberUint(caps, "reduced-phys-bits",
+ &reduced_phys_bits) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-sev-capabilities reply was missing"
+ " 'reduced-phys-bits' field"));
+ goto cleanup;
+ }
+
+ if (!(pdh = virJSONValueObjectGetString(caps, "pdh"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-sev-capabilities reply was missing"
+ " 'pdh' field"));
+ goto cleanup;
+ }
+
+ if (!(cert_chain = virJSONValueObjectGetString(caps, "cert-chain"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("query-sev-capabilities reply was missing"
+ " 'cert-chain' field"));
+ goto cleanup;
+ }
+
+ if (VIR_ALLOC(capability) < 0)
+ goto cleanup;
+
+ if (VIR_STRDUP(capability->pdh, pdh) < 0)
+ goto cleanup;
+
+ if (VIR_STRDUP(capability->cert_chain, cert_chain) < 0)
+ goto cleanup;
+
+ capability->cbitpos = cbitpos;
+ capability->reduced_phys_bits = reduced_phys_bits;
+ VIR_STEAL_PTR(*capabilities, capability);
+ ret = 0;
+
+ cleanup:
+ virSEVCapabilitiesFree(capability);
+ virJSONValueFree(cmd);
+ virJSONValueFree(reply);
+
+ return ret;
+}
+
static virJSONValuePtr
qemuMonitorJSONBuildInetSocketAddress(const char *host,
const char *port)
Index: libvirt-4.0.0/src/qemu/qemu_monitor_json.h
===================================================================
--- libvirt-4.0.0.orig/src/qemu/qemu_monitor_json.h
+++ libvirt-4.0.0/src/qemu/qemu_monitor_json.h
@@ -153,6 +153,9 @@ int qemuMonitorJSONSetMigrationCapabilit
int qemuMonitorJSONGetGICCapabilities(qemuMonitorPtr mon,
virGICCapability **capabilities);
+int qemuMonitorJSONGetSEVCapabilities(qemuMonitorPtr mon,
+ virSEVCapability **capabilities);
+
int qemuMonitorJSONMigrate(qemuMonitorPtr mon,
unsigned int flags,
const char *uri);
