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libxl: correctly handle affinity reset in virDomainPinVcpu[Flags]

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By actually removing the <vcpupin> element (from within the
<cputune> section) from the XML, rather than jus update it with
a fully set vcpu affinity mask.

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Cc: Jim Fehlig <jfehlig@suse.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
This commit is contained in:
Dario Faggioli 2013-12-20 16:01:46 +01:00 committed by Jim Fehlig
parent 520c3fbd1b
commit 9375ba2a6e
1 changed files with 18 additions and 0 deletions
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18
src/libxl/libxl_driver.c
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@ -2365,6 +2365,7 @@ libxlDomainPinVcpuFlags(virDomainPtr dom, unsigned int vcpu,
libxlDriverPrivatePtr driver = dom->conn->privateData;
libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver);
virDomainDefPtr targetDef = NULL;
virBitmapPtr pcpumap = NULL;
virDomainObjPtr vm;
int ret = -1;
@ -2394,6 +2395,10 @@ libxlDomainPinVcpuFlags(virDomainPtr dom, unsigned int vcpu,
/* Make sure coverity knows targetDef is valid at this point. */
sa_assert(targetDef);
pcpumap = virBitmapNewData(cpumap, maplen);
if (!pcpumap)
goto cleanup;
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
libxl_bitmap map = { .size = maplen, .map = cpumap };
libxlDomainObjPrivatePtr priv;
@ -2407,6 +2412,17 @@ libxlDomainPinVcpuFlags(virDomainPtr dom, unsigned int vcpu,
}
}
/* full bitmap means reset the settings (if any). */
if (virBitmapIsAllSet(pcpumap)) {
if (virDomainVcpuPinDel(targetDef, vcpu) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to delete vcpupin xml for vcpu '%d'"),
vcpu);
goto cleanup;
}
goto out;
}
if (!targetDef->cputune.vcpupin) {
if (VIR_ALLOC(targetDef->cputune.vcpupin) < 0)
goto cleanup;
@ -2422,6 +2438,7 @@ libxlDomainPinVcpuFlags(virDomainPtr dom, unsigned int vcpu,
goto cleanup;
}
out:
ret = 0;
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
@ -2433,6 +2450,7 @@ libxlDomainPinVcpuFlags(virDomainPtr dom, unsigned int vcpu,
cleanup:
if (vm)
virObjectUnlock(vm);
virBitmapFree(pcpumap);
virObjectUnref(cfg);
return ret;
}