From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: pgd_alloc and [cd]tors Date: Thu, 16 Nov 2006 23:14:22 -0800 Message-ID: <455D614E.4010607@goop.org> References: <455D0773.2050906@goop.org> <455D1A0C.6010001@vmware.com> <455D42C7.4070203@goop.org> <455D454C.9040808@vmware.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <455D454C.9040808@vmware.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.osdl.org Errors-To: virtualization-bounces@lists.osdl.org To: Zachary Amsden Cc: Chris Wright , Virtualization Mailing List List-Id: virtualization@lists.linuxfoundation.org Zachary Amsden wrote: > No, it doesn't exist under PAE, since PAE uses a common pgd[3] > therefore the init_mm pgd never needs changing for large page / split > page PD transitions. The code is there for non-PAE, but compiled out > of the PAE version. = Yep, but it would work if it were restored, right. I'm adding SHARED_KERNEL_PMD to replace all the tests on PTRS_PER_PMD, and a shared_kernel_pmd flag to pvops. J