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conf: Turn @uuid member of _virDomainMemoryDef struct into a pointer

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The _virDomainMemoryDef structure has @uuid member which is
needed for PPC64 guests. No other architectures use it. Since the
member is VIR_UUID_BUFLEN bytes long, the structure is
unnecessary big. If the member is just a pointer then we can also
replace some calls of virUUIDIsValid() with plain test against
NULL and also simplify formatter code which can now also check
the pointer against NULL.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This commit is contained in:
Michal Privoznik 2021-01-18 14:10:30 +01:00
parent ae83f592a7
commit 0123b42c54
3 changed files with 10 additions and 8 deletions
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14
src/conf/domain_conf.c
View File

@ -3116,6 +3116,7 @@ void virDomainMemoryDefFree(virDomainMemoryDefPtr def)
VIR_FREE(def->nvdimmPath);
virBitmapFree(def->sourceNodes);
VIR_FREE(def->uuid);
virDomainDeviceInfoClear(&def->info);
VIR_FREE(def);
}
@ -15530,6 +15531,7 @@ virDomainMemoryDefParseXML(virDomainXMLOptionPtr xmlopt,
/* Extract nvdimm uuid or generate a new one */
tmp = virXPathString("string(./uuid[1])", ctxt);
def->uuid = g_new0(unsigned char, VIR_UUID_BUFLEN);
if (!tmp) {
if (virUUIDGenerate(def->uuid) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
@ -22808,7 +22810,9 @@ virDomainMemoryDefCheckABIStability(virDomainMemoryDefPtr src,
return false;
}
if (memcmp(src->uuid, dst->uuid, VIR_UUID_BUFLEN) != 0) {
if ((src->uuid || dst->uuid) &&
!(src->uuid && dst->uuid &&
memcmp(src->uuid, dst->uuid, VIR_UUID_BUFLEN) == 0)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Target NVDIMM UUID doesn't match source NVDIMM"));
return false;
@ -26560,7 +26564,6 @@ virDomainMemoryTargetDefFormat(virBufferPtr buf,
static int
virDomainMemoryDefFormat(virBufferPtr buf,
virDomainMemoryDefPtr def,
const virDomainDef *dom,
unsigned int flags)
{
const char *model = virDomainMemoryModelTypeToString(def->model);
@ -26575,8 +26578,7 @@ virDomainMemoryDefFormat(virBufferPtr buf,
virBufferAddLit(buf, ">\n");
virBufferAdjustIndent(buf, 2);
if (def->model == VIR_DOMAIN_MEMORY_MODEL_NVDIMM &&
ARCH_IS_PPC64(dom->os.arch)) {
if (def->uuid) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(def->uuid, uuidstr);
@ -28974,7 +28976,7 @@ virDomainDefFormatInternalSetRootName(virDomainDefPtr def,
virDomainShmemDefFormat(buf, def->shmems[n], flags);
for (n = 0; n < def->nmems; n++) {
if (virDomainMemoryDefFormat(buf, def->mems[n], def, flags) < 0)
if (virDomainMemoryDefFormat(buf, def->mems[n], flags) < 0)
return -1;
}
@ -30091,7 +30093,7 @@ virDomainDeviceDefCopy(virDomainDeviceDefPtr src,
rc = 0;
break;
case VIR_DOMAIN_DEVICE_MEMORY:
rc = virDomainMemoryDefFormat(&buf, src->data.memory, def, flags);
rc = virDomainMemoryDefFormat(&buf, src->data.memory, flags);
break;
case VIR_DOMAIN_DEVICE_SHMEM:
virDomainShmemDefFormat(&buf, src->data.shmem, flags);

2
src/conf/domain_conf.h
View File

@ -2331,7 +2331,7 @@ struct _virDomainMemoryDef {
bool readonly; /* valid only for NVDIMM */
/* required for QEMU NVDIMM ppc64 support */
unsigned char uuid[VIR_UUID_BUFLEN];
unsigned char *uuid; /* VIR_UUID_BUFLEN bytes long */
virDomainDeviceInfo info;
};

2
src/qemu/qemu_command.c
View File

@ -3319,7 +3319,7 @@ qemuBuildMemoryDeviceStr(const virDomainDef *def,
if (mem->labelsize)
virBufferAsprintf(&buf, "label-size=%llu,", mem->labelsize * 1024);
if (virUUIDIsValid(mem->uuid)) {
if (mem->uuid) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(mem->uuid, uuidstr);