KVM: arm64: Add {get,set}_user for PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR}

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For unimplemented counters, the bits in PM{C,I}NTEN{SET,CLR} and
PMOVS{SET,CLR} registers are expected to RAZ. To honor this,
explicitly implement the {get,set}_user functions for these
registers to mask out unimplemented counters for userspace reads
and writes.

Co-developed-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
Link: https://lore.kernel.org/r/20231020214053.2144305-6-rananta@google.com
[Oliver: drop unnecessary locking]
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Raghavendra Rao Ananta 2023-10-20 21:40:45 +00:00 • committed by Oliver Upton

parent 4d20debf9c

commit a45f41d754

1 changed files with 45 additions and 6 deletions

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arch/arm64/kvm/sys_regs.c

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