On Thu, Jul 22, 2021 at 04:24:47AM +0000, Mathew McBride wrote:
> The Performance Manager Unit was not described in the DTS
> which meant performance event monitoring was not possible.
>
> This was exposed by a change to the PMU handling in KVM
> in 5.11-rc3 which now prevents a PMU being exposed to a
> guest when the host does not provide one:
> "KVM: arm64: Don't access PMCR_EL0 when no PMU is available"
>
> Signed-off-by: Mathew McBride <matt@xxxxxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> index 79ceadc9dc4a..752c7f41e6b1 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> @@ -189,6 +189,11 @@ timer {
> <1 10 IRQ_TYPE_LEVEL_LOW>;/* Hypervisor PPI */
> };
>
> + pmu {
> + compatible = "arm,armv8-pmuv3";
> + interrupts = <1 7 0x8>; /* PMU PPI, Level low type */
Use define GIC_PPI and IRQ_TYPE_LEVEL_LOW, so that you can drop the
comment.
Shawn
> + };
> +
> psci {
> compatible = "arm,psci-0.2";
> method = "smc";
> --
> 2.30.1
>
