KVM: arm64: Reuse fields of sys_reg_desc for idreg

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sys_reg_desc::{reset, val} are presently unused for ID register
descriptors. Repurpose these fields to support user-configurable ID
registers.
Use the ::reset() function pointer to return the sanitised value of a
given ID register, optionally with KVM-specific feature sanitisation.
Additionally, keep a mask of writable register fields in ::val.

Signed-off-by: Jing Zhang <jingzhangos@google.com>
Link: https://lore.kernel.org/r/20230609190054.1542113-6-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Jing Zhang 2023-06-09 19:00:48 +00:00 • committed by Oliver Upton

parent f90f9360c3

commit d86cde6e33

2 changed files with 84 additions and 25 deletions

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94

arch/arm64/kvm/sys_regs.c

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15

arch/arm64/kvm/sys_regs.h

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