From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 16 Mar 2001 14:12:34 +0100 From: Jamie Lokier Subject: Re: [PATCH/RFC] fix missing tlb flush on x86 smp+pae Message-ID: <20010316141234.B1805@pcep-jamie.cern.ch> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: ; from bcrl@redhat.com on Thu, Mar 15, 2001 at 02:50:50PM -0500 Sender: owner-linux-mm@kvack.org Return-Path: To: Ben LaHaise Cc: torvalds@transmeta.com, linux-mm@kvack.org List-ID: Ben LaHaise wrote: > Below is a patch for 2.4 (it's against 2.4.2-ac20) that fixes a case where > pmd_alloc could install a new entry without causing a tlb flush on other > CPUs. This was fatal with PAE because the CPU caches the top level of the > page tables, which was showing up as an infinite stream of identical page > faults. Ew. Is this the only case where adding a new entry requires a tlb flush? It is quite an unusual requirement. -- Jamie -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/