Re: [uml-devel] [PATCH v3 0/3] um: fix and extend FPU support

[Richard Weinberger <richard@nod.at>]

Am 19.03.2016 um 17:58 schrieb Eli Cooper:
> This series first fixes a bug that results in corrupted FPU state after
> invoking signal handlers. It also adds support for the extended processor
> state (XSTATE) for x86_64 UML, especially the YMM registers used by AVX(2)
> instructions.
> 
> Tested with a minimal multi-threaded FPU-intensive test program (see below).
> This series supersedes the previous sigreturn fix as that one is incorrect
> when the process is multi-threaded.
> 
> Changes since v2:
>  - Add an improved sigreturn fix to this series
>  - Merge the ptrace changes into the last commit
>  - Make the selftest program multi-threaded
> 
> Changes since v1:
>  - Refactor functions with oversized stack frame
>  - Add a tiny selftest program to the cover letter
> 
> Eli Cooper (3):
>   um: fix FPU state preservation around signal handlers
>   um: extend fpstate to _xstate to support YMM registers
>   um: add extended processor state save/restore support

Sorry for my late response.
I'll put this now into -next and give it some testing.

Thanks a lot for fixing!
//richard

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