Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 7 Apr 2001 15:05:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 7 Apr 2001 15:05:43 -0400 Received: from femail17.sdc1.sfba.home.com ([24.0.95.144]:14301 "EHLO femail17.sdc1.sfba.home.com") by vger.kernel.org with ESMTP id ; Sat, 7 Apr 2001 15:05:13 -0400 Message-ID: <3ACF5924.4E321EF2@didntduck.org> Date: Sat, 07 Apr 2001 14:15:00 -0400 From: Brian Gerst X-Mailer: Mozilla 4.75 [en] (X11; U; Linux 2.4.0-test11 i586) X-Accept-Language: en MIME-Version: 1.0 To: Pavel Machek CC: linux-kernel@vger.kernel.org Subject: Re: 2.4 kernel hangs on 486 machine at boot In-Reply-To: <3ACB6524.C5986233@didntduck.org> <20010405102454.A31@(none)> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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... > > > > > > > > > > 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/