On Wed, 06 Nov 2024 16:04:48 +0000, Mark Rutland wrote:
SMCCCv1.3 added a hint bit which callers can set in an SMCCC function ID (AKA "FID") to indicate that it is acceptable for the SMCCC implementation to discard SVE and/or SME state over a specific SMCCC call. The kernel support for using this hint is broken and SMCCC calls may clobber the SVE and/or SME state of arbitrary tasks, though FPSIMD state is unaffected.
[...]
Applied to arm64 (for-next/fixes), thanks!
[1/1] arm64: smccc: Remove broken support for SMCCCv1.3 SVE discard hint https://git.kernel.org/arm64/c/8c462d56487e
Cheers,