From: Brian Gerst <bgerst@didntduck.org>
To: Pavel Machek <pavel@suse.cz>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.4 kernel hangs on 486 machine at boot
Date: Sat, 07 Apr 2001 14:15:00 -0400 [thread overview]
Message-ID: <3ACF5924.4E321EF2@didntduck.org> (raw)
In-Reply-To: <E14krU0-0002P8-00@the-village.bc.nu> <3ACB6524.C5986233@didntduck.org> <20010405102454.A31@(none)>
Pavel Machek wrote:
>
> Hi!
>
> > > > Problem: Linux kernel 2.4 consistently hangs at boot on 486 machine
> > > >
> > > > Shortly after lilo starts the kernel it hangs at the following message:
> > > > Checking if this processor honours the WP bit even in supervisor mode...
> > > > <blinking cursor>
> > >
> > > Does this happen on 2.4.3-ac kernel trees ? I thought i had it zapped
> >
> > Yes, that fix in -ac should take care of it. As to why only the 486
> > showed the problem, most 386's will not fault on the write protected
> > page (the whole reason for this test) and pentiums and later don't run
> > the test at all (assumed good).
>
> We should not "assume good" -- to catch bugs like this one.
Well, in this case we cannot do the test if we enabled PSE (we would
mark the whole 4MB page read-only). The test would have to use a
different page.
--
Brian Gerst
prev parent reply other threads:[~2001-04-07 19:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-04 14:53 2.4 kernel hangs on 486 machine at boot Vik Heyndrickx
2001-04-04 17:54 ` Alan Cox
2001-04-04 17:44 ` Vik Heyndrickx
2001-04-04 18:17 ` Brian Gerst
2001-04-05 10:24 ` Pavel Machek
2001-04-07 18:15 ` Brian Gerst [this message]
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