From owner-cvs-all Fri Apr 12 13:43: 3 2002 Delivered-To: cvs-all@freebsd.org Received: from cs.rice.edu (cs.rice.edu [128.42.1.30]) by hub.freebsd.org (Postfix) with ESMTP id E19CF37B405; Fri, 12 Apr 2002 13:42:56 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by cs.rice.edu (Postfix) with ESMTP id EE46D18F4; Fri, 12 Apr 2002 15:42:53 -0500 (CDT) Received: by cs.rice.edu (Postfix, from userid 19572) id EFB5C18ED; Fri, 12 Apr 2002 15:42:37 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by cs.rice.edu (Postfix) with ESMTP id D323C18EC; Fri, 12 Apr 2002 15:42:37 -0500 (CDT) Date: Fri, 12 Apr 2002 15:42:37 -0500 (CDT) From: Alan Cox To: Thomas Moestl Cc: , Subject: Re: cvs commit: src/sys/kern sys_pipe.c In-Reply-To: <200204121938.g3CJcfk69260@freefall.freebsd.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Virus-Scanned: by AMaViS snapshot-20010714 Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Fri, 12 Apr 2002, Thomas Moestl wrote: > tmm 2002/04/12 12:38:41 PDT > > Modified files: > sys/kern sys_pipe.c > Log: > Do not use pmap_kextract() to find out the physical address of a user > belong to a user virtual address; while this happens to work on some > architectures, it can't on sparc64, since user and kernel virtual > address spaces overlap there (the distinction between them is done via > separate address space identifiers). > Why not pmap_extract() on the map->pmap? pmap_extract() is the equivalent of pmap_kextract() for ordinary pmap's, i.e., not the kernel pmap. Alan > Instead, look up the page in the vm_map of the process in question. > > Reviewed by: jake > > Revision Changes Path > 1.102 +17 -6 src/sys/kern/sys_pipe.c > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message