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arm: virt: add PMU property to mach-virt machine type

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CPU vPMU is now turned ON by default, but this feature wasn't introduced
until virt-2.7 machine type. To solve this problem, this patch adds a
PMU option in machine state, which is used to control CPU's vPMU status.
This PMU option is not exposed to command line and is turned off in
virt-2.6 machine type.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Wei Huang <wei@redhat.com>
Message-id: 1477463301-17175-3-git-send-email-wei@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Wei Huang 2016-10-28 14:12:31 +01:00 committed by Peter Maydell
parent 929e754d5a
commit 1141d1eb57
1 changed files with 7 additions and 0 deletions
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7
hw/arm/virt.c
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@ -85,6 +85,7 @@ typedef struct {
VirtBoardInfo *daughterboard;
bool disallow_affinity_adjustment;
bool no_its;
bool no_pmu;
} VirtMachineClass;
typedef struct {
@ -1353,6 +1354,10 @@ static void machvirt_init(MachineState *machine)
}
}
if (vmc->no_pmu && object_property_find(cpuobj, "pmu", NULL)) {
object_property_set_bool(cpuobj, false, "pmu", NULL);
}
if (object_property_find(cpuobj, "reset-cbar", NULL)) {
object_property_set_int(cpuobj, vbi->memmap[VIRT_CPUPERIPHS].base,
"reset-cbar", &error_abort);
@ -1592,5 +1597,7 @@ static void virt_machine_2_6_options(MachineClass *mc)
virt_machine_2_7_options(mc);
SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_6);
vmc->disallow_affinity_adjustment = true;
/* Disable PMU for 2.6 as PMU support was first introduced in 2.7 */
vmc->no_pmu = true;
}
DEFINE_VIRT_MACHINE(2, 6)