linux-kernel - Re: [PATCH 4/4] x86/fpu: don't abuse drop_init_fpu() in flush

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Message-ID: <20150316152609.GM22995@pd.tnic>
Date:	Mon, 16 Mar 2015 16:26:09 +0100
From:	Borislav Petkov <bp@...e.de>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Dave Hansen <dave.hansen@...el.com>,
	Ingo Molnar <mingo@...nel.org>,
	Andy Lutomirski <luto@...capital.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Pekka Riikonen <priikone@....fi>,
	Rik van Riel <riel@...hat.com>,
	Suresh Siddha <sbsiddha@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"Yu, Fenghua" <fenghua.yu@...el.com>,
	Quentin Casasnovas <quentin.casasnovas@...cle.com>
Subject: Re: [PATCH 4/4] x86/fpu: don't abuse drop_init_fpu() in
 flush_thread()

On Mon, Mar 16, 2015 at 03:39:44PM +0100, Oleg Nesterov wrote:
> ACK!

Thanks.

> Perhaps you can also find a beter name for __save_init_fpu/etc ;) The
> name clearly suggests that it does "save + init" while in fact it does
> "save and may be destroy FPU state". At least for the callers, the fact
> that "destroy" is actually "init" doesn't really matter.
> 
> But lets not rename it right now. This can conflict with the fixes we
> need to do first.

Right, so I think we should do fixes/cleanups first so that we can lose
all the fat/cruft this code has grown. I'll make looking at that code
easier later.

I'll push out everything I have collected so far for people to see after
I've finished bisecting another tip/master regression from today.

Thanks.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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