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Re: [PATCH v4 2/2] x86/fpu: Rework fpu_setup_fpu() uses to split it in two
- To: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 8 Oct 2024 08:37:27 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Tue, 08 Oct 2024 06:37:39 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 07.10.2024 17:52, Alejandro Vallejo wrote:
> It was trying to do too many things at once and there was no clear way of
> defining what it was meant to do. This commit splits the function in two.
>
> 1. A function to return the FPU to power-on reset values.
> 2. A x87/SSE state loader (equivalent to the old function when it took
> a data pointer).
>
> The old function also had a concept of "default" values that the FPU
> would be configured for in some cases but not others. This patch removes
> that 3rd vague initial state and replaces it with power-on reset.
>
> While doing this make sure the abridged control tag is consistent with the
> manuals and starts as 0xFF
>
> Signed-off-by: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>
> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
> --
> @Jan: The patch changed substantially. Are you still ok with this R-by?
I am. However in such a situation imo you'd better drop the tag, for it to
be re-offered (if desired). It can very well happen that the person simply
doesn't notice the question pointed at them.
Jan
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