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libxl: implement virConnectCompareCPU 

Implement support for "virsh cpu-compare" so that we can calculate
common cpu element between a pool of hosts, which had a requirement
of providing host cpu description.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Joao Martins 2016-07-20 20:08:48 +01:00 committed by Michal Privoznik
parent 17322e5518
commit 5822b740ad
1 changed files with 39 additions and 0 deletions
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39
src/libxl/libxl_driver.c
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@ -62,6 +62,7 @@
#include "network/bridge_driver.h"
#include "locking/domain_lock.h"
#include "virstats.h"
#include "cpu/cpu.h"
#define VIR_FROM_THIS VIR_FROM_LIBXL
@ -6348,6 +6349,43 @@ libxlConnectGetDomainCapabilities(virConnectPtr conn,
}
static int
libxlConnectCompareCPU(virConnectPtr conn,
const char *xmlDesc,
unsigned int flags)
{
libxlDriverPrivatePtr driver = conn->privateData;
libxlDriverConfigPtr cfg;
int ret = VIR_CPU_COMPARE_ERROR;
bool failIncompatible;
virCheckFlags(VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE,
VIR_CPU_COMPARE_ERROR);
if (virConnectCompareCPUEnsureACL(conn) < 0)
return ret;
failIncompatible = !!(flags & VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE);
cfg = libxlDriverConfigGet(driver);
if (!cfg->caps->host.cpu ||
!cfg->caps->host.cpu->model) {
if (failIncompatible) {
virReportError(VIR_ERR_CPU_INCOMPATIBLE, "%s",
_("cannot get host CPU capabilities"));
} else {
VIR_WARN("cannot get host CPU capabilities");
ret = VIR_CPU_COMPARE_INCOMPATIBLE;
}
} else {
ret = cpuCompareXML(cfg->caps->host.cpu, xmlDesc, failIncompatible);
}
virObjectUnref(cfg);
return ret;
}
static virHypervisorDriver libxlHypervisorDriver = {
.name = LIBXL_DRIVER_NAME,
.connectOpen = libxlConnectOpen, /* 0.9.0 */
@ -6452,6 +6490,7 @@ static virHypervisorDriver libxlHypervisorDriver = {
.nodeGetSecurityModel = libxlNodeGetSecurityModel, /* 1.2.16 */
.domainInterfaceAddresses = libxlDomainInterfaceAddresses, /* 1.3.5 */
.connectGetDomainCapabilities = libxlConnectGetDomainCapabilities, /* 2.0.0 */
.connectCompareCPU = libxlConnectCompareCPU, /* 2.3.0 */
};
static virConnectDriver libxlConnectDriver = {