KVM: arm64: Upgrade PMU support to ARMv8.4

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Upgrading the PMU code from ARMv8.1 to ARMv8.4 turns out to be
pretty easy. All that is required is support for PMMIR_EL1, which
is read-only, and for which returning 0 is a valid option as long
as we don't advertise STALL_SLOT as an implemented event.

Let's just do that and adjust what we return to the guest.

Signed-off-by: Marc Zyngier <maz@kernel.org>

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This commit is contained in:

Marc Zyngier 2020-02-16 18:17:22 +00:00

parent 94893fc9ad

commit 46081078fe

3 changed files with 16 additions and 4 deletions

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3

arch/arm64/include/asm/sysreg.h

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6

arch/arm64/kvm/pmu-emul.c

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11

arch/arm64/kvm/sys_regs.c

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