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From: "H. Peter Anvin" <hpa@zytor.com>
To: George Spelvin <linux@horizon.com>, torvalds@linux-foundation.org
Cc: jack@suse.cz, linux-kernel@vger.kernel.org,
	maarten-baert@hotmail.com, mingo@kernel.org,
	nate@thatsmathematics.com, priikone@iki.fi, sbsiddha@gmail.com,
	stable@vger.kernel.org, tglx@linutronix.de, x86@kernel.org
Subject: Re: [PATCH] Make math_state_restore() save and restore the interrupt flag
Date: Sat, 01 Feb 2014 17:25:18 -0800	[thread overview]
Message-ID: <52ED9E7E.6090205@zytor.com> (raw)
In-Reply-To: <20140202011931.27901.qmail@science.horizon.com>

On 02/01/2014 05:19 PM, George Spelvin wrote:
>> OK, let's circle back for a bit.  We have an active bug, and we clearly
>> have a lot of restructuring that could/should be done.  We need to fix
>> the bug first; if we're going to a bunch of restructuring then that
>> ought to be separate.  The first bit is how we fix the immediate bug.
> 
> Well, that's what the [PATCH] that started this thread,s for which seems
> to greatly reduce the incidence.
> 
> The issue being discussed here is the fact that it's far from clear to
> people that the result of applying that patch is actually bug-free.
> 
> Given how long it's been in shipping kernels (2.6.26 or 3.10, depending
> on what you think causes it to trigger) and how few complaints there
> have been, I'm happy to take a while to think about it.
> 

Yes, I would agree with that.  I guess I should have said "how do we fix
the immediate bug(s) properly."

	-hpa


  reply	other threads:[~2014-02-02  1:25 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-30 22:01 [PATCH] Make math_state_restore() save and restore the interrupt flag Nate Eldredge
2014-01-30 22:24 ` Linus Torvalds
2014-01-31  7:33   ` Suresh Siddha
2014-02-01 19:27     ` Linus Torvalds
2014-02-01 19:35       ` H. Peter Anvin
2014-02-01 19:46         ` Linus Torvalds
2014-02-01 20:00           ` H. Peter Anvin
2014-02-01 20:16             ` Linus Torvalds
2014-02-01 20:16           ` H. Peter Anvin
2014-02-01 21:17           ` George Spelvin
2014-02-01 21:36             ` H. Peter Anvin
2014-02-01 21:36               ` H. Peter Anvin
2014-02-01 23:40             ` H. Peter Anvin
2014-02-02  0:17               ` Linus Torvalds
2014-02-02  1:19               ` George Spelvin
2014-02-02  1:25                 ` H. Peter Anvin [this message]
2014-02-02  8:45           ` Pekka Riikonen
2014-02-02  1:06       ` Suresh Siddha
2014-02-02  1:26         ` H. Peter Anvin
2014-02-02  1:35           ` Suresh Siddha
2014-02-02  1:38             ` Linus Torvalds
2014-02-02  1:47               ` Suresh Siddha
2014-02-02  1:51                 ` Linus Torvalds
2014-02-02  1:57                   ` H. Peter Anvin
2014-02-02  2:05                     ` Linus Torvalds
2014-02-02  2:12                       ` H. Peter Anvin
2014-02-02  1:59                   ` Suresh Siddha
2014-02-02  1:43             ` H. Peter Anvin
2014-02-02  1:47               ` Linus Torvalds
2014-02-02  7:19         ` Suresh Siddha
2014-02-02 19:15           ` Linus Torvalds
2014-02-03  6:56             ` Suresh Siddha
2014-02-03 18:20               ` Linus Torvalds
2014-02-04  6:03                 ` Suresh Siddha
2014-02-06  5:26               ` Nate Eldredge
2014-02-06  5:34                 ` George Spelvin
2014-02-13 15:45               ` Maarten Baert
2014-02-13 20:00                 ` George Spelvin
2014-03-11 19:36               ` [tip:x86/urgent] x86, fpu: Check tsk_used_math() in kernel_fpu_end() for eager FPU tip-bot for Suresh Siddha
2014-02-27 23:44           ` [PATCH] Make math_state_restore() save and restore the interrupt flag H. Peter Anvin
2014-03-07 23:18             ` H. Peter Anvin
2014-03-08  6:18               ` Suresh Siddha

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