On 21/09/2023 08:30, Richard Weinberger wrote:
----- Ursprüngliche Mail -----
Von: "anton ivanov" <anton.iva...@cambridgegreys.com>
An: "Peter Lafreniere" <pe...@n8pjl.ca>
CC: "Johannes Berg" <johan...@sipsolutions.net>, "linux-um" <linux-um@lists.infradead.org>,
"richard" <rich...@nod.at>
Gesendet: Donnerstag, 21. September 2023 09:12:33
Betreff: Re: [PATCH] um: Enable preemption in UML
On 20/09/2023 15:49, Peter Lafreniere wrote:
On Wed, Sep 20, 2023 at 08:31, anton.iva...@cambridgegreys.com wrote:
From: Anton Ivanov anton.iva...@cambridgegreys.com
Preemption requires saving/restoring FPU state. This patch
adds support for it using GCC intrinsics.
Signed-off-by: Anton Ivanov anton.iva...@cambridgegreys.com
I'm not so sure whether we should really directly start with CONFIG_PREEMPT.
I have managed to make it work except the IRQ return bit suggested by Peter. We
are quite paranoid regarding locking and we are UP so nearly all of it worked
out of the box.
How about implementing CONFIG_PREEMPT_COUNT first?
Sure. Will try that today.
Thanks,
//richard
--
Anton R. Ivanov
Cambridgegreys Limited. Registered in England. Company Number 10273661
https://www.cambridgegreys.com/
_______________________________________________
linux-um mailing list
linux-um@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-um
