Messages in this thread | | | From | Catalin Marinas <> | Subject | Re: [PATCH] arm64/ptrace: Ensure that SME is set up for target when writing SSVE state | Date | Thu, 17 Aug 2023 19:54:27 +0100 |
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On Thu, 10 Aug 2023 12:28:19 +0100, Mark Brown wrote: > When we use NT_ARM_SSVE to either enable streaming mode or change the > vector length for a process we do not currently do anything to ensure that > there is storage allocated for the SME specific register state. If the > task had not previously used SME or we changed the vector length then > the task will not have had TIF_SME set or backing storage for ZA/ZT > allocated, resulting in inconsistent register sizes when saving state > and spurious traps which flush the newly set register state. > > [...]
Applied to arm64 (for-next/fixes), thanks!
[1/1] arm64/ptrace: Ensure that SME is set up for target when writing SSVE state https://git.kernel.org/arm64/c/5d0a8d2fba50
-- Catalin
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