KVM: arm64: Register AArch64 system register entries with the sysreg xarray

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In order to reduce the number of lookups that we have to perform
when handling a sysreg, register each AArch64 sysreg descriptor
with the global xarray. The index of the descriptor is stored
as a 10 bit field in the data word.

Subsequent patches will retrieve and use the stored index.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240214131827.2856277-15-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Marc Zyngier 2024-02-14 13:18:15 +00:00 • committed by Oliver Upton

parent 7fd498f473

commit 19f3e7ea29

3 changed files with 50 additions and 3 deletions

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3

arch/arm64/include/asm/kvm_host.h

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39

arch/arm64/kvm/emulate-nested.c

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11

arch/arm64/kvm/sys_regs.c

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