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Add support for HAP feature to xen drivers

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xen-unstable c/s 16931 introduced a per-domain setting for hvm
guests to enable/disable hardware assisted paging.  If disabled,
software techniques such as shadow page tables are used.  If enabled,
and the feature exists in underlying hardware, hardware support for
paging is used.

This provides implementation for mapping HAP setting to/from
domxml/native formats in xen drivers.
This commit is contained in:
Jim Fehlig 2011-01-05 15:16:57 -07:00
parent 48a5dccda9
commit 041973504f
4 changed files with 16 additions and 0 deletions
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4
src/xen/xend_internal.c
View File

@ -2210,6 +2210,8 @@ xenDaemonParseSxpr(virConnectPtr conn,
def->features |= (1 << VIR_DOMAIN_FEATURE_APIC);
if (sexpr_int(root, "domain/image/hvm/pae"))
def->features |= (1 << VIR_DOMAIN_FEATURE_PAE);
if (sexpr_int(root, "domain/image/hvm/hap"))
def->features |= (1 << VIR_DOMAIN_FEATURE_HAP);
/* Old XenD only allows localtime here for HVM */
if (sexpr_int(root, "domain/image/hvm/localtime"))
@ -5923,6 +5925,8 @@ xenDaemonFormatSxpr(virConnectPtr conn,
virBufferAddLit(&buf, "(apic 1)");
if (def->features & (1 << VIR_DOMAIN_FEATURE_PAE))
virBufferAddLit(&buf, "(pae 1)");
if (def->features & (1 << VIR_DOMAIN_FEATURE_HAP))
virBufferAddLit(&buf, "(hap 1)");
virBufferAddLit(&buf, "(usb 1)");

8
src/xen/xm_internal.c
View File

@ -830,6 +830,10 @@ xenXMDomainConfigParse(virConnectPtr conn, virConfPtr conf) {
goto cleanup;
else if (val)
def->features |= (1 << VIR_DOMAIN_FEATURE_APIC);
if (xenXMConfigGetBool(conf, "hap", &val, 0) < 0)
goto cleanup;
else if (val)
def->features |= (1 << VIR_DOMAIN_FEATURE_HAP);
}
if (xenXMConfigGetBool(conf, "localtime", &vmlocaltime, 0) < 0)
goto cleanup;
@ -2409,6 +2413,10 @@ virConfPtr xenXMDomainConfigFormat(virConnectPtr conn,
(1 << VIR_DOMAIN_FEATURE_APIC)) ? 1 : 0) < 0)
goto no_memory;
if (xenXMConfigSetInt(conf, "hap",
(def->features &
(1 << VIR_DOMAIN_FEATURE_HAP)) ? 1 : 0) < 0)
goto no_memory;
if (def->clock.offset == VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME) {
if (def->clock.data.timezone) {

2
src/xenapi/xenapi_driver.c
View File

@ -1358,6 +1358,8 @@ xenapiDomainDumpXML (virDomainPtr dom, int flags ATTRIBUTE_UNUSED)
defPtr->features = defPtr->features | (1<<VIR_DOMAIN_FEATURE_APIC);
else if (STREQ(result->contents[i].key, "pae"))
defPtr->features = defPtr->features | (1<<VIR_DOMAIN_FEATURE_PAE);
else if (STREQ(result->contents[i].key, "hap"))
defPtr->features = defPtr->features | (1<<VIR_DOMAIN_FEATURE_HAP);
}
}
xen_string_string_map_free(result);

2
src/xenapi/xenapi_utils.c
View File

@ -529,6 +529,8 @@ createVMRecordFromXml (virConnectPtr conn, virDomainDefPtr def,
allocStringMap(&strings, (char *)"apic", (char *)"true");
if (def->features & (1 << VIR_DOMAIN_FEATURE_PAE))
allocStringMap(&strings, (char *)"pae", (char *)"true");
if (def->features & (1 << VIR_DOMAIN_FEATURE_HAP))
allocStringMap(&strings, (char *)"hap", (char *)"true");
}
if (strings != NULL)
(*record)->platform = strings;