KVM: arm64: vgic-v2: Use cpuid from userspace as vcpu_id

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When parsing a GICv2 attribute that contains a cpuid, handle this
as the vcpu_id, not a vcpu_idx, as userspace cannot really know
the mapping between the two. For this, use kvm_get_vcpu_by_id()
instead of kvm_get_vcpu().

Take this opportunity to get rid of the pointless check against
online_vcpus, which doesn't make much sense either, and switch
to FIELD_GET as a way to extract the vcpu_id.

Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230927090911.3355209-5-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>

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Marc Zyngier 2023-09-27 10:09:04 +01:00 • committed by Oliver Upton

parent f3f60a5653

commit 4e7728c81a

1 changed files with 2 additions and 6 deletions

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arch/arm64/kvm/vgic/vgic-kvm-device.c

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