Re: [PATCH v2] m68k: save extra registers on more syscall entry points

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Hi Linus,

Am 19.06.2021 um 11:38 schrieb Linus Torvalds:
On Fri, Jun 18, 2021 at 3:34 PM Michael Schmitz <schmitzmic@xxxxxxxxx> wrote:

Is your patch to copy_thread() to add the extra stack frame still needed?

So it's been a long time since I did any m68k assembly, but I think
the m68k patch for the PF_IO_WORKER thread case should look something
like the attached.

OK, that answers my question, thanks!


Note: my only m68k work was ever on the 68008, and used the Motorola
syntax, not the odd Sun assembler syntax, so my m68k asm skills really
aren't good.

Put another way: I'd be surprised if the attached patch actually
works, but I think it's fairly close. I tried to add comments to
explain the code at least a bit.

Hmm?

I'll give it a spin (on the emulator).

Cheers,

	Michael


         Linus




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