From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Cngqt-0005tx-Ug for qemu-devel@nongnu.org; Sun, 09 Jan 2005 12:27:44 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Cngqt-0005tf-Ac for qemu-devel@nongnu.org; Sun, 09 Jan 2005 12:27:43 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1CnglB-0004OC-R6 for qemu-devel@nongnu.org; Sun, 09 Jan 2005 12:21:49 -0500 Received: from [80.91.229.2] (helo=main.gmane.org) by monty-python.gnu.org with esmtp (Exim 4.34) id 1Cng5G-0002X7-P2 for qemu-devel@nongnu.org; Sun, 09 Jan 2005 11:38:31 -0500 Received: from list by main.gmane.org with local (Exim 3.35 #1 (Debian)) id 1Cng5E-00018Z-00 for ; Sun, 09 Jan 2005 17:38:28 +0100 Received: from inet.ycc.ru ([217.148.52.177]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 09 Jan 2005 17:38:28 +0100 Received: from patrakov by inet.ycc.ru with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 09 Jan 2005 17:38:28 +0100 From: "Alexander E. Patrakov" Date: Sun, 09 Jan 2005 21:39:42 +0500 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit Sender: news Subject: [Qemu-devel] Re: [PATCH] upgraded mmap patches Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Magnus Damm wrote: > Hi All, > > I have just finished upgrading the CONFIG_MMU_MAP (aka mmap) patches > written by Piotrek. I have only tested to build the code with > --target-list=i386-softmmu and only on x86 hosts running Linux. I am > able to run Win XP SP2 as guest both with and without mmap > acceleration with the patch. > > The changes are not many since the last release by Piotrek, I just > made sure the code applied to CVS of today and yeah, I added some > basic code to support quad-word memory access. It is totally untested > and probably broken right now. Someone please look at part4 of the > patch and verify that I read 32-bit words the right way. > > Sorry PowerPC folks, no ppc host support yet. I will port up the ppc > host patches after someone has fixed so ppc compiles cleanly... > > The first three parts are simply upgraded versions of the files > v1-part[1-3].patch.gz that Piotrek posted to the list around a month > ago. Part4 contains changes by me. > > Enjoy, please report back to the list with problems and benchmarks! Is a new patched qemu really supposed to be much slower than the original in the case when /proc/sys/vm/max_map_count doesn't contain a number that's big enough to enable acceleration? -- Alexander E. Patrakov