Date: Wed, 23 May 2001 12:57:30 +1000 From: Benno Rice <benno@FreeBSD.org> To: David Edelsohn <dje@watson.ibm.com> Cc: Doug Rabson <dfr@nlsystems.com>, freebsd-ppc@FreeBSD.ORG Subject: Re: FreeBSD/powerpc work to date Message-ID: <20010523125730.D70899@rafe.jeamland.net> In-Reply-To: <200105230208.WAA26946@makai.watson.ibm.com>; from dje@watson.ibm.com on Tue, May 22, 2001 at 10:08:44PM -0400 References: <benno@FreeBSD.ORG> <200105230208.WAA26946@makai.watson.ibm.com>
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--TybLhxa8M7aNoW+V Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, May 22, 2001 at 10:08:44PM -0400, David Edelsohn wrote: > >>>>> Benno Rice writes: >=20 > Benno> There's still an issue somewhere in the pmap code in that as soon = as > Benno> I flush the TLB it starts having problems. If I leave the TLB alo= ne > Benno> though it manages to crawl it's way to vm_mem_init and > Benno> vm_page_startup before falling over. >=20 > Is the kernel running real or virtual at that point? It sounds > like you are running virtual and blowing away the TLB before the page > table structures are in place to allow the kernel to handle a page fault. > Are you mapping the kernel with a large BAT? It's running virtual. I've got DBAT and IBAT mappings for the kernel, and DBAT mappings for various bits of IO space. I've duplicated the OpenFirmwa= re mappings into my new page table. My current theories are either that there are errors in my PTE insertion code or that something's really messed up wi= th my stack. --=20 Benno Rice benno@FreeBSD.org --TybLhxa8M7aNoW+V Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (FreeBSD) Comment: For info see http://www.gnupg.org iEYEARECAAYFAjsLJxoACgkQbQx7xhW+Eg7HoQCgxvMatMOM2450LEI2Re2sbC1I BGsAnjXk2Coi1Q+lBAGEQegKJ0tu2sbf =xHcs -----END PGP SIGNATURE----- --TybLhxa8M7aNoW+V-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ppc" in the body of the message
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