Messages in this thread | | | Date | Tue, 13 Jan 2015 19:30:03 +0100 | From | Oleg Nesterov <> | Subject | Re: [RFC PATCH 04/11] x86,fpu: defer FPU restore until return to userspace |
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On 01/13, Oleg Nesterov wrote: > > But yes, I think we need the per-cpu "in_kernel_fpu" and irq_fpu_usable() > must die. Please look at http://marc.info/?l=linux-kernel&m=14096628660929
Plus I think we need this to fix the race with math_state_restore()... Please see http://marc.info/?l=linux-kernel&m=140992479607206
Unfortunately I forgot other problems I found in this area... And I completely forgot the plan I had in mind ;)
Oleg.
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