Re: [PATCH 2/8] KVM: arm64: Remove host FPSIMD saving for non-protected KVM

On Tue, Feb 04, 2025 at 03:20:54PM +0000, Mark Rutland wrote:

Now that the host eagerly saves its own FPSIMD/SVE/SME state, non-protected KVM never needs to save the host FPSIMD/SVE/SME state, and the code to do this is never used. Protected KVM still needs to save/restore the host FPSIMD/SVE state to avoid leaking guest state to the host (and to avoid revealing to the host whether the guest used FPSIMD/SVE/SME), and that code needs to be retained.

Reviewed-by: Mark Brown broonie@kernel.org