linux-kernel - Re: [PATCH 0/5] i387: stable kernel backport

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Message-ID: <CA+55aFziJ=Lw0KxxThwfqRPR+K0OWDorKAfkgKMGPXv5O404JA@mail.gmail.com>
Date:	Wed, 22 Feb 2012 15:31:49 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Raphael Prevost <raphael@...o.asia>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/5] i387: stable kernel backport

On Wed, Feb 22, 2012 at 3:15 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> Ok, I probably missed something when I skipped the patches that
> weren't appropriate for backporting (like the whole FPU state preload
> removal and rewriting).

Ahh. Yes, I see what happened.

The FPU preloading patches cleaned up __switch_to() to use the
appropriate helpers to set TS_USEDFPU, but since I skipped them
(because I felt they weren't appropriate for -stable), those cleanups
got missed. So then the __math_state_restore()

Only the last patch needs fixing, methinks. Updated version attached.

                    Linus

View attachment "0005-i387-move-TS_USEDFPU-flag-from-thread_info-to-task_s.patch" of type "text/x-patch" (10419 bytes)