- Original Message -
> From: "Michael Ellerman"
> To: "Timothy Pearson" , "Segher Boessenkool"
>
> Cc: "linuxppc-dev"
> Sent: Monday, February 12, 2024 11:23:30 PM
> Subject: Re: [PATCH] powerpc: Add gpr1 and fpu save/resto
Timothy Pearson writes:
> - Original Message -
>> From: "Segher Boessenkool"
>> To: "Timothy Pearson"
>> Cc: "linuxppc-dev"
>> Sent: Monday, February 12, 2024 12:23:22 PM
>> Subject: Re: [PATCH] powerpc: Add gpr1 and fpu
- Original Message -
> From: "Segher Boessenkool"
> To: "Timothy Pearson"
> Cc: "linuxppc-dev"
> Sent: Monday, February 12, 2024 12:23:22 PM
> Subject: Re: [PATCH] powerpc: Add gpr1 and fpu save/restore functions
> On Mon, Feb 12,
On Mon, Feb 12, 2024 at 12:07:03PM -0600, Timothy Pearson wrote:
> > I have done it for *all* architectures some ten years ago. Never found
> > any problem.
>
> That makes sense, what I mean by invasive is that we'd need buy-in from the
> other
> maintainers across all of the affected architectu
- Original Message -
> From: "Segher Boessenkool"
> To: "Timothy Pearson"
> Cc: "linuxppc-dev"
> Sent: Monday, February 12, 2024 11:59:06 AM
> Subject: Re: [PATCH] powerpc: Add gpr1 and fpu save/restore functions
> On Mon, Feb 12,
On Mon, Feb 12, 2024 at 11:46:19AM -0600, Timothy Pearson wrote:
> Interesting, that make sense.
>
> How should we proceed from the current situation? Bringing in libgcc seems
> like a fairly invasive change,
I have done it for *all* architectures some ten years ago. Never found
any problem.
>
- Original Message -
> From: "Segher Boessenkool"
> To: "Timothy Pearson"
> Cc: "linuxppc-dev"
> Sent: Monday, February 12, 2024 11:30:43 AM
> Subject: Re: [PATCH] powerpc: Add gpr1 and fpu save/restore functions
>
> Long long t
On Mon, Feb 12, 2024 at 11:09:38AM -0600, Timothy Pearson wrote:
> There is existing code in the kernel right now to provide support functions
> for gpr0 and altivec save/restore. I don't know the full story here, but at
> some point in the kernel's history it seems to have been decided to provi
- Original Message -
> From: "Segher Boessenkool"
> To: "Timothy Pearson"
> Cc: "linuxppc-dev"
> Sent: Monday, February 12, 2024 11:02:07 AM
> Subject: Re: [PATCH] powerpc: Add gpr1 and fpu save/restore functions
> On Mon, Feb 12,
On Mon, Feb 12, 2024 at 10:41:18AM -0600, Timothy Pearson wrote:
> Implement gpr1 and fpu save/restore functions per the ABI v2 documentation.
There is no "ABI v2". This is the ELFv2 ABI, it is a name, it is not a
version 2 of anything (in fact, it is version 1 everywhere).
The same functions ar
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