Re: [patch 01/10] x86/fpu/signal: Clarify exception handling in restore_fpregs_from_user()

[Thomas Gleixner]

On Wed, Sep 01 2021 at 14:00, Thomas Gleixner wrote:
>
> commit b2f9d678e28c ("x86/mce: Check for faults tagged in
> EXTABLE_CLASS_FAULT exception table entries") made use of this in MCE to
> allow in kernel recovery. The only thing it uses is checking the
> exception handler type.
>
> Bah. I'll fix that up to make that less obscure.
>
> The remaining two use cases (SGX and FPU) make use of the stored trap
> number.

Though while for the FPU use case we really want to handle the #MC case,
it's not clear to me whether this is actually correct for SGX.

Jarkko, Sean, Dave?

Thanks,

        tglx