From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45511) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZK6FZ-0000FV-6j for qemu-devel@nongnu.org; Tue, 28 Jul 2015 10:53:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZK6FY-0002Yi-3W for qemu-devel@nongnu.org; Tue, 28 Jul 2015 10:53:01 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53220) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZK6FX-0002YQ-Un for qemu-devel@nongnu.org; Tue, 28 Jul 2015 10:53:00 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (Postfix) with ESMTPS id 8908E91FE3 for ; Tue, 28 Jul 2015 14:52:59 +0000 (UTC) From: Igor Mammedov Date: Tue, 28 Jul 2015 16:52:52 +0200 Message-Id: <1438095173-7417-4-git-send-email-imammedo@redhat.com> In-Reply-To: <1438095173-7417-1-git-send-email-imammedo@redhat.com> References: <1438095173-7417-1-git-send-email-imammedo@redhat.com> Subject: [Qemu-devel] [PATCH for-2.5 3/4] vhost: switch region lookup from linear to bsearch List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: mst@redhat.com Signed-off-by: Igor Mammedov --- hw/virtio/vhost.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 8bef43e..5b8598b 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -420,13 +420,11 @@ static struct vhost_memory_region *vhost_dev_find_reg(struct vhost_dev *dev, uint64_t start_addr, uint64_t size) { - int i, n = dev->mem->nregions; - for (i = 0; i < n; ++i) { - struct vhost_memory_region *reg = dev->mem->regions + i; - if (ranges_overlap(reg->guest_phys_addr, reg->memory_size, - start_addr, size)) { - return reg; - } + int i = memory_range_bsearch(dev, start_addr), n = dev->mem->nregions; + struct vhost_memory_region *reg = dev->mem->regions + i; + if (i < n && ranges_overlap(reg->guest_phys_addr, reg->memory_size, + start_addr, size)) { + return reg; } return NULL; } -- 1.8.3.1