From: Andrew Morton <akpm@osdl.org>
To: Andi Kleen <ak@suse.de>
Cc: jamie@shareable.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Mutilated form of Andi Kleen's AMD prefetch errata patch
Date: Wed, 1 Oct 2003 00:00:15 -0700 [thread overview]
Message-ID: <20031001000015.69007e85.akpm@osdl.org> (raw)
In-Reply-To: <p73k77pzc69.fsf@oldwotan.suse.de>
Andi Kleen <ak@suse.de> wrote:
>
> Andrew Morton <akpm@osdl.org> writes:
>
> > Looking at Andi's patch, it is also a dead box if the fault happens inside
> > down_write(mmap_sem). That should be fixed, methinks.
>
> The only way to fix all that would be to move the instruction checks early
> into the fast path.
Well the deadlock avoidance only needs to happen if the fault occured in
kernel mode. Presumably most faults are in userspace, so most of the
overhead can be avoided.
next prev parent reply other threads:[~2003-10-01 6:59 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <7F740D512C7C1046AB53446D3720017304AFCF@scsmsx402.sc.intel.com.suse.lists.linux.kernel>
[not found] ` <20031001053833.GB1131@mail.shareable.org.suse.lists.linux.kernel>
[not found] ` <20030930224853.15073447.akpm@osdl.org.suse.lists.linux.kernel>
[not found] ` <20031001061348.GE1131@mail.shareable.org.suse.lists.linux.kernel>
[not found] ` <20030930233258.37ed9f7f.akpm@osdl.org.suse.lists.linux.kernel>
2003-10-01 6:47 ` [PATCH] Mutilated form of Andi Kleen's AMD prefetch errata patch Andi Kleen
2003-10-01 7:00 ` Andrew Morton [this message]
2003-10-01 7:06 ` Andi Kleen
2003-10-01 7:31 ` Jamie Lokier
2003-10-01 7:41 ` Andi Kleen
2003-10-01 8:02 ` Hugh Dickins
2003-10-01 8:49 ` Andi Kleen
2003-10-01 9:33 ` Jamie Lokier
2003-10-01 14:51 ` Andrew Morton
2003-10-01 14:56 ` Andi Kleen
2003-10-01 15:19 ` Andrew Morton
2003-10-01 15:24 ` Andi Kleen
2003-10-01 16:18 ` Jamie Lokier
2003-10-01 7:20 ` Jamie Lokier
2003-10-01 7:39 ` Andi Kleen
2003-10-01 8:20 ` Jamie Lokier
[not found] ` <20031001065705.GI1131@mail.shareable.org.suse.lists.linux.kernel>
2003-10-01 7:15 ` Andi Kleen
2003-10-01 7:24 ` Andi Kleen
2003-10-01 7:55 ` Jamie Lokier
2003-10-01 8:00 ` Andi Kleen
2003-10-01 4:30 Nakajima, Jun
2003-10-01 5:38 ` Jamie Lokier
2003-10-01 5:48 ` Andrew Morton
2003-10-01 6:13 ` Jamie Lokier
2003-10-01 6:32 ` Andrew Morton
2003-10-01 6:57 ` Jamie Lokier
-- strict thread matches above, loose matches on Subject: below --
2003-10-01 2:23 Nakajima, Jun
2003-10-01 2:51 ` Jamie Lokier
2003-10-01 3:14 ` Andrew Morton
2003-10-01 1:54 Nakajima, Jun
2003-10-01 2:07 ` Andrew Morton
2003-10-01 2:08 ` Mike Fedyk
[not found] <20030930073814.GA26649@mail.jlokier.co.uk.suse.lists.linux.kernel>
[not found] ` <20030930132211.GA23333@redhat.com.suse.lists.linux.kernel>
[not found] ` <20030930133936.GA28876@mail.shareable.org.suse.lists.linux.kernel>
[not found] ` <20030930135324.GC5507@redhat.com.suse.lists.linux.kernel>
[not found] ` <20030930144526.GC28876@mail.shareable.org.suse.lists.linux.kernel>
[not found] ` <20030930150825.GD5507@redhat.com.suse.lists.linux.kernel>
[not found] ` <20030930165450.GF28876@mail.shareable.org.suse.lists.linux.kernel>
[not found] ` <20030930172618.GE5507@redhat.com.suse.lists.linux.kernel>
2003-09-30 19:08 ` Andi Kleen
2003-09-30 20:08 ` H. Peter Anvin
2003-09-30 7:38 Jamie Lokier
2003-09-30 8:01 ` Nick Piggin
2003-09-30 13:22 ` Dave Jones
2003-09-30 13:39 ` Jamie Lokier
2003-09-30 13:53 ` Dave Jones
2003-09-30 14:45 ` Jamie Lokier
2003-09-30 15:08 ` Dave Jones
2003-09-30 16:54 ` Jamie Lokier
2003-09-30 17:26 ` Dave Jones
2003-09-30 23:55 ` Jamie Lokier
2003-10-01 0:27 ` Andrew Morton
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