From: "George Spelvin" <linux@horizon.com>
To: linux@horizon.com, nate@thatsmathematics.com
Cc: adilger@dilger.ca, arjan@linux.intel.com, jack@suse.cz,
linux-kernel@vger.kernel.org, maarten-baert@hotmail.com,
mingo@elte.hu, suresh.b.siddha@intel.com, tglx@linutronix.de,
viro@zeniv.linux.org.uk
Subject: Re: math_state_restore and kernel_fpu_end disable interrupts?
Date: 19 Jan 2014 16:02:28 -0500 [thread overview]
Message-ID: <20140119210228.9598.qmail@science.horizon.com> (raw)
In-Reply-To: <alpine.DEB.2.10.1401191150520.2663@minerva.lan>
> It's credited to Suresh Siddha, whom I've cc'ed (along with others who
> signed off). Suresh, if you're still around, could you comment on why
> math_state_restore always leaves interrupts disabled, regardless of their
> state on entry? Is there a deep reason or is it a bug?
What the comments seemed to be implying was that it was a bug to enter
this code with interrupts enabled. So the problem may be a little bit
more systemic; expert counsel is required.
> George, does it help your problem?
I'm trying it now. But it takes a while for me to reproduce, and even
longer to be sure the problem has gone away. So anything you hear from
me within a week will be bad news.
next prev parent reply other threads:[~2014-01-19 21:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-19 11:35 George Spelvin
2014-01-19 19:02 ` Nate Eldredge
2014-01-19 21:02 ` George Spelvin [this message]
2014-01-21 2:22 ` Nate Eldredge
2014-01-21 13:58 ` Jan Kara
2014-01-21 17:10 ` George Spelvin
2014-01-28 18:53 ` George Spelvin
2014-01-28 19:23 ` Nate Eldredge
-- strict thread matches above, loose matches on Subject: below --
2014-01-18 6:15 Nate Eldredge
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