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| author | Wei Huang <wei@redhat.com> | 2016-10-28 14:12:31 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-10-28 15:51:27 +0100 |
| commit | 929e754d5a621cd53f30e69b766ccf381b58d124 (patch) | |
| tree | c45dfc88a52151503499de05df746d39e7c3d99b /hw/arm/virt.c | |
| parent | d1df5cf3634af7003951d23164f349e360ecb601 (diff) | |
| download | focaccia-qemu-929e754d5a621cd53f30e69b766ccf381b58d124.tar.gz focaccia-qemu-929e754d5a621cd53f30e69b766ccf381b58d124.zip | |
arm: Add an option to turn on/off vPMU support
This patch adds a pmu=[on/off] option to enable/disable vPMU support in guest vCPU. It allows virt tools, such as libvirt, to determine the exsitence of vPMU and configure it. Note this option is only available for cortex-a57/cortex-53/ host CPUs, but unavailable on ARMv7 and other processors. Also even though "pmu=" option is available for TCG mode, setting it doesn't turn PMU on. Signed-off-by: Wei Huang <wei@redhat.com> Reviewed-by: Andrew Jones <drjones@redhat.com> Message-id: 1477463301-17175-2-git-send-email-wei@redhat.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm/virt.c')
| -rw-r--r-- | hw/arm/virt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 070bbf89d4..32c95fbb33 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -490,7 +490,7 @@ static void fdt_add_pmu_nodes(const VirtBoardInfo *vbi, int gictype) CPU_FOREACH(cpu) { armcpu = ARM_CPU(cpu); - if (!armcpu->has_pmu || + if (!arm_feature(&armcpu->env, ARM_FEATURE_PMU) || !kvm_arm_pmu_create(cpu, PPI(VIRTUAL_PMU_IRQ))) { return; } |