diff options
| 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 | |
| parent | d1df5cf3634af7003951d23164f349e360ecb601 (diff) | |
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')
| -rw-r--r-- | hw/arm/virt-acpi-build.c | 2 | ||||
| -rw-r--r-- | hw/arm/virt.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 5fc10df08e..f953610018 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -594,7 +594,7 @@ build_madt(GArray *table_data, BIOSLinker *linker, VirtGuestInfo *guest_info) gicc->uid = i; gicc->flags = cpu_to_le32(ACPI_GICC_ENABLED); - if (armcpu->has_pmu) { + if (arm_feature(&armcpu->env, ARM_FEATURE_PMU)) { gicc->performance_interrupt = cpu_to_le32(PPI(VIRTUAL_PMU_IRQ)); } } 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; } |