[PATCH v2 0/3] KVM: arm64: Minor improvements to RAZ register handling

[Alexandru Elisei]

What sparked these small patches is the series that fixed the PMU reset
values and their visibility from userspace, more specifically the
discussion around the patch that removed the PMSWINC_EL0 shadow register
[1].

The patches are straightforward cleanups without any changes in
functionality.

Tested on a rockpro64, by running kvm-unit-tests under qemu.

Changes in v2:

* Added patch #3 ("KVM: arm64: Replace get_raz_id_reg() with get_raz_reg()"), as
  suggested by Drew.
* Rebased on top of v5.15-rc5.
* Gathered Reviewed-by, thanks!
* A few small commit message changes to patch #1.

[1] https://www.spinics.net/lists/kvm-arm/msg47976.html

Alexandru Elisei (3):
  KVM: arm64: Return early from read_id_reg() if register is RAZ
  KVM: arm64: Use get_raz_reg() for userspace reads of PMSWINC_EL0
  KVM: arm64: Replace get_raz_id_reg() with get_raz_reg()

 arch/arm64/kvm/sys_regs.c | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

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2.33.0