All of lore.kernel.org
 help / color / mirror / Atom feed
* [0/3] A few 32bit x86 fixes
@ 2018-10-16 20:25 Sebastian Andrzej Siewior
  2018-10-16 20:25 ` [PATCH 1/3] x86/mm/pat: Disable preemption around __flush_tlb_all() Sebastian Andrzej Siewior
                   ` (2 more replies)
  0 siblings, 3 replies; 26+ messages in thread
From: Sebastian Andrzej Siewior @ 2018-10-16 20:25 UTC (permalink / raw)
  To: linux-kernel
  Cc: x86, Dave Hansen, Andy Lutomirski, Peter Zijlstra, Borislav Petkov

I wanted to get rid of fpu->initialized but I did not understand the FPU
EMU code. So I decided to enable it and see how it works. Turns out it
doesn't work.

While #3 fixes this I propose the removal of it since probably nobody is
using it. While at, we could also remove the 32bit x86 code since it
makes things way more complicated.

Anyway, I tried fma() in userland and it worked. The only thing that
popped was not related to FPU and is addressed in #1.

Sebastian


^ permalink raw reply	[flat|nested] 26+ messages in thread

end of thread, other threads:[~2018-11-05 21:56 UTC | newest]

Thread overview: 26+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-10-16 20:25 [0/3] A few 32bit x86 fixes Sebastian Andrzej Siewior
2018-10-16 20:25 ` [PATCH 1/3] x86/mm/pat: Disable preemption around __flush_tlb_all() Sebastian Andrzej Siewior
2018-10-16 21:25   ` Andy Lutomirski
2018-10-16 21:38     ` Sebastian Andrzej Siewior
2018-10-16 23:28       ` Andy Lutomirski
2018-10-17 10:34         ` [PATCH 1/3 v2] " Sebastian Andrzej Siewior
2018-10-29 18:10           ` [tip:x86/urgent] " tip-bot for Sebastian Andrzej Siewior
2018-11-05 21:56             ` Dan Williams
2018-10-17  9:54   ` [PATCH 1/3] " David Laight
2018-10-17 10:39     ` 'Sebastian Andrzej Siewior'
2018-10-17 11:45       ` David Laight
2018-10-17 12:00         ` 'Sebastian Andrzej Siewior'
2018-10-17 11:11     ` Peter Zijlstra
2018-10-17 11:17       ` Thomas Gleixner
2018-10-17 15:47         ` Peter Zijlstra
2018-10-17 15:55           ` Thomas Gleixner
2018-10-17 16:00           ` 'Sebastian Andrzej Siewior'
2018-10-17 16:22             ` Peter Zijlstra
2018-10-16 20:25 ` [PATCH 2/3] x86/fpu: Remove second definition of fpu in __fpu__restore_sig() Sebastian Andrzej Siewior
2018-10-16 21:26   ` Andy Lutomirski
2018-10-17  9:09   ` [tip:x86/urgent] " tip-bot for Sebastian Andrzej Siewior
2018-10-18  6:22   ` tip-bot for Sebastian Andrzej Siewior
2018-10-16 20:25 ` [PATCH 3/3] x86/fpu: Save FPU registers on context switch if there is a FPU Sebastian Andrzej Siewior
2018-10-16 23:00   ` Andy Lutomirski
2018-10-17  9:10   ` [tip:x86/urgent] x86/fpu: Fix i486 + no387 boot crash by only saving FPU registers on context switch if there is an FPU tip-bot for Sebastian Andrzej Siewior
2018-10-18  6:22   ` tip-bot for Sebastian Andrzej Siewior

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.