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qemu: Enable 'host-passthrough' cpu mode for aarch64

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This patch allows libvirt user to specify 'host-passthrough'
cpu mode while using qemu/kvm backend on aarch64.
It uses 'host' as a CPU model name instead of some other stub
(correct CPU detection is not implemented yet) to allow libvirt
user to specify 'host-model' cpu mode as well.

Signed-off-by: Oleg Strikov <oleg.strikov@canonical.com>

(crobinso: fix some indentation)
This commit is contained in:
Oleg Strikov 2014-01-23 19:19:44 +04:00 committed by Cole Robinson
parent 96f274a989
commit 29ea437e40
1 changed files with 31 additions and 9 deletions
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40
src/cpu/cpu_aarch64.c
View File

@ -25,6 +25,7 @@
#include "viralloc.h"
#include "cpu.h"
#include "virstring.h"
#define VIR_FROM_THIS VIR_FROM_CPU
@ -44,16 +45,19 @@ AArch64NodeData(virArch arch)
}
static int
AArch64Decode(virCPUDefPtr cpu ATTRIBUTE_UNUSED,
const virCPUData *data ATTRIBUTE_UNUSED,
const char **models ATTRIBUTE_UNUSED,
unsigned int nmodels ATTRIBUTE_UNUSED,
const char *preferred ATTRIBUTE_UNUSED,
unsigned int flags)
AArch64Decode(virCPUDefPtr cpu,
const virCPUData *data ATTRIBUTE_UNUSED,
const char **models ATTRIBUTE_UNUSED,
unsigned int nmodels ATTRIBUTE_UNUSED,
const char *preferred ATTRIBUTE_UNUSED,
unsigned int flags)
{
virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES, -1);
if (cpu->model == NULL &&
VIR_STRDUP(cpu->model, "host") < 0)
return -1;
return 0;
}
@ -63,6 +67,24 @@ AArch64DataFree(virCPUDataPtr data)
VIR_FREE(data);
}
static int
AArch64Update(virCPUDefPtr guest,
const virCPUDef *host)
{
guest->match = VIR_CPU_MATCH_EXACT;
virCPUDefFreeModel(guest);
return virCPUDefCopyModel(guest, host, true);
}
static virCPUCompareResult
AArch64GuestData(virCPUDefPtr host ATTRIBUTE_UNUSED,
virCPUDefPtr guest ATTRIBUTE_UNUSED,
virCPUDataPtr *data ATTRIBUTE_UNUSED,
char **message ATTRIBUTE_UNUSED)
{
return VIR_CPU_COMPARE_IDENTICAL;
}
struct cpuArchDriver cpuDriverAARCH64 = {
.name = "aarch64",
.arch = archs,
@ -72,8 +94,8 @@ struct cpuArchDriver cpuDriverAARCH64 = {
.encode = NULL,
.free = AArch64DataFree,
.nodeData = AArch64NodeData,
.guestData = NULL,
.guestData = AArch64GuestData,
.baseline = NULL,
.update = NULL,
.update = AArch64Update,
.hasFeature = NULL,
};