From: Benjamin LaHaise <bcrl@redhat.com>
To: Alexander Viro <viro@math.psu.edu>
Cc: Linus Torvalds <torvalds@transmeta.com>,
linux-mm@kvack.org, Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: weirdness with ->mm vs ->active_mm handling
Date: Thu, 29 Aug 2002 19:52:18 -0400 [thread overview]
Message-ID: <20020829195218.I17288@redhat.com> (raw)
In-Reply-To: <Pine.GSO.4.21.0208291940350.15425-100000@weyl.math.psu.edu>; from viro@math.psu.edu on Thu, Aug 29, 2002 at 07:45:49PM -0400
On Thu, Aug 29, 2002 at 07:45:49PM -0400, Alexander Viro wrote:
> Lazy-TLB == "promise not to use a lot of stuff in the kernel". In particular,
> any page fault in that state is a bug.
In that case the lazy vmalloc faulting code is busted, as accessing a vmalloc
page may need to fill in a pgd/pmd entry from a lazy tlb task. Got an idea
for a more preferable fix?
-ben
--
"You will be reincarnated as a toad; and you will be much happier."
WARNING: multiple messages have this Message-ID (diff)
From: Benjamin LaHaise <bcrl@redhat.com>
To: Alexander Viro <viro@math.psu.edu>
Cc: Linus Torvalds <torvalds@transmeta.com>,
linux-mm@kvack.org, Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: weirdness with ->mm vs ->active_mm handling
Date: Thu, 29 Aug 2002 19:52:18 -0400 [thread overview]
Message-ID: <20020829195218.I17288@redhat.com> (raw)
In-Reply-To: <Pine.GSO.4.21.0208291940350.15425-100000@weyl.math.psu.edu>; from viro@math.psu.edu on Thu, Aug 29, 2002 at 07:45:49PM -0400
On Thu, Aug 29, 2002 at 07:45:49PM -0400, Alexander Viro wrote:
> Lazy-TLB == "promise not to use a lot of stuff in the kernel". In particular,
> any page fault in that state is a bug.
In that case the lazy vmalloc faulting code is busted, as accessing a vmalloc
page may need to fill in a pgd/pmd entry from a lazy tlb task. Got an idea
for a more preferable fix?
-ben
--
"You will be reincarnated as a toad; and you will be much happier."
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/
next prev parent reply other threads:[~2002-08-29 23:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-29 23:34 weirdness with ->mm vs ->active_mm handling Benjamin LaHaise
2002-08-29 23:34 ` Benjamin LaHaise
2002-08-29 23:45 ` Alexander Viro
2002-08-29 23:45 ` Alexander Viro
2002-08-29 23:52 ` Benjamin LaHaise [this message]
2002-08-29 23:52 ` Benjamin LaHaise
2002-08-30 5:10 ` Linus Torvalds
2002-08-30 5:10 ` Linus Torvalds
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