From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 16 Mar 2010 20:56:01 +0100 (CET) Received: from localhost.localdomain ([127.0.0.1]:50131 "EHLO h5.dl5rb.org.uk" rhost-flags-OK-OK-OK-FAIL) by eddie.linux-mips.org with ESMTP id S1492504Ab0CPTzx (ORCPT ); Tue, 16 Mar 2010 20:55:53 +0100 Received: from h5.dl5rb.org.uk (localhost.localdomain [127.0.0.1]) by h5.dl5rb.org.uk (8.14.3/8.14.3) with ESMTP id o2GJtpAM008347; Tue, 16 Mar 2010 20:55:51 +0100 Received: (from ralf@localhost) by h5.dl5rb.org.uk (8.14.3/8.14.3/Submit) id o2GJtpP1008346; Tue, 16 Mar 2010 20:55:51 +0100 Date: Tue, 16 Mar 2010 20:55:51 +0100 From: Ralf Baechle To: David Daney Cc: linux-mips@linux-mips.org Subject: Re: [PATCH 2/3] MIPS: Preliminary vdso. Message-ID: <20100316195551.GE20160@linux-mips.org> References: <1266538385-29088-1-git-send-email-ddaney@caviumnetworks.com> <1266538385-29088-3-git-send-email-ddaney@caviumnetworks.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1266538385-29088-3-git-send-email-ddaney@caviumnetworks.com> User-Agent: Mutt/1.5.20 (2009-08-17) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 26245 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Thu, Feb 18, 2010 at 04:13:04PM -0800, David Daney wrote: > This is a preliminary patch to add a vdso to all user processes. > Still missing are ELF headers and .eh_frame information. But it is > enough to allow us to move signal trampolines off of the stack. Note > that emulation of branch delay slots in the FPU emulator still > requires the stack. > > We allocate a single page (the vdso) and write all possible signal > trampolines into it. The stack is moved down by one page and the vdso > is mapped into this space. Thanks, applied. Ralf