KVM: arm64: Enumerate SVE register indices for KVM_GET_REG_LIST
This patch includes the SVE register IDs in the list returned by KVM_GET_REG_LIST, as appropriate. On a non-SVE-enabled vcpu, no new IDs are added. On an SVE-enabled vcpu, IDs for the FPSIMD V-registers are removed from the list, since userspace is required to access the Z- registers instead in order to access the V-register content. For the variably-sized SVE registers, the appropriate set of slice IDs are enumerated, depending on the maximum vector length for the vcpu. As it currently stands, the SVE architecture never requires more than one slice to exist per register, so this patch adds no explicit support for enumerating multiple slices. The code can be extended straightforwardly to support this in the future, if needed. Signed-off-by:Dave Martin <Dave.Martin@arm.com> Reviewed-by:
Julien Thierry <julien.thierry@arm.com> Tested-by:
zhang.lei <zhang.lei@jp.fujitsu.com> Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com>
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