From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Barnes Date: Tue, 29 Jun 2004 17:45:40 +0000 Subject: Re: BUG 2.6.7 hangs on boot (rx2600) Message-Id: <200406291045.40716.jbarnes@engr.sgi.com> List-Id: References: <20040622061505.GA23075@cup.hp.com> In-Reply-To: <20040622061505.GA23075@cup.hp.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Tuesday, June 29, 2004 10:40 am, Chen, Kenneth W wrote: > Jesse Barnes wrote on Tuesday, June 29, 2004 10:32 AM > > > On Tuesday, June 29, 2004 8:34 am, Chen, Kenneth W wrote: > > > To follow up the other bug in head.S, here is the fix. > > > > > > --------- > > > For BP, we are not installing any region 7 DTLB mapping for init_task. > > > However, kr(stack) is being initialized to a legal kernel granule that > > > the kernel resides. If the first task context switch out of this > > > init_task happens to have its task struct in that very same granule, > > > the stack will not be mapped by any DTLB. Patch to properly initialize > > > kr(stack) for BP. > > > > I tried both of these on a machine that doesn't have memory at the stock > > kernel load address, and it failed very early on. However, it works with > > the attached patch. > > Let me confirm what I understand: > David's bk tree doesn't boot. > David's bk tree + 2 patches I posted this morning doesn't boot. > > Is that correct? Correct. David's tree hangs at a later point though, after printing "Console: ... 80x25". Jesse