This patch allows libvirt user to specify 'host-passthrough'
cpu mode while using qemu/kvm backend on arm (arm32).
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.stri...@canonical.com
---
This is a port of the following aarch64-specific change:
http://libvirt.org/git/?p=libvirt.git;a=commit;h=29ea437e408e441bad67e4ffae731286d356ca4a
Only function names were changed.
---
src/cpu/cpu_arm.c | 30 ++
1 file changed, 26 insertions(+), 4 deletions(-)
diff --git a/src/cpu/cpu_arm.c b/src/cpu/cpu_arm.c
index 1853810..5baff42 100644
--- a/src/cpu/cpu_arm.c
+++ b/src/cpu/cpu_arm.c
@@ -26,6 +26,7 @@
#include viralloc.h
#include cpu.h
+#include virstring.h
#define VIR_FROM_THIS VIR_FROM_CPU
@@ -45,16 +46,19 @@ ArmNodeData(virArch arch)
}
static int
-ArmDecode(virCPUDefPtr cpu ATTRIBUTE_UNUSED,
+ArmDecode(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;
}
@@ -64,6 +68,24 @@ ArmDataFree(virCPUDataPtr data)
VIR_FREE(data);
}
+static int
+ArmUpdate(virCPUDefPtr guest,
+ const virCPUDef *host)
+{
+guest-match = VIR_CPU_MATCH_EXACT;
+virCPUDefFreeModel(guest);
+return virCPUDefCopyModel(guest, host, true);
+}
+
+static virCPUCompareResult
+ArmGuestData(virCPUDefPtr host ATTRIBUTE_UNUSED,
+ virCPUDefPtr guest ATTRIBUTE_UNUSED,
+ virCPUDataPtr *data ATTRIBUTE_UNUSED,
+ char **message ATTRIBUTE_UNUSED)
+{
+return VIR_CPU_COMPARE_IDENTICAL;
+}
+
struct cpuArchDriver cpuDriverArm = {
.name = arm,
.arch = archs,
@@ -73,8 +95,8 @@ struct cpuArchDriver cpuDriverArm = {
.encode = NULL,
.free = ArmDataFree,
.nodeData = ArmNodeData,
-.guestData = NULL,
+.guestData = ArmGuestData,
.baseline = NULL,
-.update = NULL,
+.update = ArmUpdate,
.hasFeature = NULL,
};
--
1.7.9.5
--
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