KVM: arm64: Only insert reserved ranges when SMCCC filter is used

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The reserved ranges are only useful for preventing userspace from
adding a rule that intersects with functions we must handle in KVM. If
userspace never writes to the SMCCC filter than this is all just wasted
work/memory.

Insert reserved ranges on the first call to KVM_ARM_VM_SMCCC_FILTER.

Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231004234947.207507-3-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Oliver Upton 2023-10-04 23:49:46 +00:00

parent bb17fb31f0

commit d34b76489e

1 changed files with 16 additions and 6 deletions

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arch/arm64/kvm/hypercalls.c

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