From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JQTaR-0005Gn-QB for qemu-devel@nongnu.org; Sat, 16 Feb 2008 15:24:39 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JQTaQ-0005GM-EE for qemu-devel@nongnu.org; Sat, 16 Feb 2008 15:24:39 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JQTaQ-0005GJ-8B for qemu-devel@nongnu.org; Sat, 16 Feb 2008 15:24:38 -0500 Received: from miranda.se.axis.com ([193.13.178.8]) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1JQTaP-0000ec-QN for qemu-devel@nongnu.org; Sat, 16 Feb 2008 15:24:38 -0500 Received: from axis.com (edgar.se.axis.com [10.93.151.1]) by miranda.se.axis.com (8.13.4/8.13.4/Debian-3sarge3) with ESMTP id m1GKOZ8Y017530 for ; Sat, 16 Feb 2008 21:24:35 +0100 Date: Sat, 16 Feb 2008 21:24:35 +0100 From: "Edgar E. Iglesias" Message-ID: <20080216202435.GC7603@edgar.se.axis.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Subject: [Qemu-devel] [PATCH] mmap.c: Reuse unmapped memory areas. 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 Try to rewind mmap_next_start when unmapping memory. Simple tests in test-mmap.c now pass. Best regards -- Edgar E. Iglesias Axis Communications AB diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 6292826..78a8162 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -385,6 +385,9 @@ int target_munmap(abi_ulong start, abi_ulong len) real_end -= qemu_host_page_size; } + if (start < mmap_next_start) + mmap_next_start = start; + /* unmap what we can */ if (real_start < real_end) { ret = munmap(g2h(real_start), real_end - real_start);