From: Jamie Lokier <lk@tantalophile.demon.co.uk>
To: Ben LaHaise <bcrl@redhat.com>
Cc: torvalds@transmeta.com, linux-mm@kvack.org
Subject: Re: [PATCH/RFC] fix missing tlb flush on x86 smp+pae
Date: Fri, 16 Mar 2001 14:12:34 +0100 [thread overview]
Message-ID: <20010316141234.B1805@pcep-jamie.cern.ch> (raw)
In-Reply-To: <Pine.LNX.4.30.0103151438140.16542-100000@today.toronto.redhat.com>; from bcrl@redhat.com on Thu, Mar 15, 2001 at 02:50:50PM -0500
Ben LaHaise wrote:
> Below is a patch for 2.4 (it's against 2.4.2-ac20) that fixes a case where
> pmd_alloc could install a new entry without causing a tlb flush on other
> CPUs. This was fatal with PAE because the CPU caches the top level of the
> page tables, which was showing up as an infinite stream of identical page
> faults.
Ew. Is this the only case where adding a new entry requires a tlb
flush? It is quite an unusual requirement.
-- Jamie
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next prev parent reply other threads:[~2001-03-16 13:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-15 19:50 Ben LaHaise
2001-03-16 13:12 ` Jamie Lokier [this message]
2001-03-16 13:34 ` Stephen C. Tweedie
2001-03-16 17:10 ` Linus Torvalds
2001-03-16 17:29 ` Stephen C. Tweedie
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