From patchwork Tue Jun 5 17:24:41 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Capitulino X-Patchwork-Id: 163110 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id E0BA3B6F62 for ; Wed, 6 Jun 2012 03:25:28 +1000 (EST) Received: from localhost ([::1]:33806 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SbxVW-0001gZ-NT for incoming@patchwork.ozlabs.org; Tue, 05 Jun 2012 13:25:26 -0400 Received: from eggs.gnu.org ([208.118.235.92]:54122) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SbxVC-0001PA-Mf for qemu-devel@nongnu.org; Tue, 05 Jun 2012 13:25:08 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SbxV5-0000qj-RU for qemu-devel@nongnu.org; Tue, 05 Jun 2012 13:25:06 -0400 Received: from mx1.redhat.com ([209.132.183.28]:3844) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SbxV5-0000qV-JO for qemu-devel@nongnu.org; Tue, 05 Jun 2012 13:24:59 -0400 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q55HOtgF027318 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 5 Jun 2012 13:24:56 -0400 Received: from localhost (ovpn-116-79.ams2.redhat.com [10.36.116.79]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q55HOrEL017120; Tue, 5 Jun 2012 13:24:55 -0400 From: Luiz Capitulino To: qemu-devel@nongnu.org Date: Tue, 5 Jun 2012 14:24:41 -0300 Message-Id: <1338917108-3965-3-git-send-email-lcapitulino@redhat.com> In-Reply-To: <1338917108-3965-1-git-send-email-lcapitulino@redhat.com> References: <1338917108-3965-1-git-send-email-lcapitulino@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.12 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 209.132.183.28 Cc: aliguori@us.ibm.com Subject: [Qemu-devel] [PATCH 02/29] Add API to check whether a physical address is I/O address X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Wen Congyang This API will be used in the following patch. Signed-off-by: Wen Congyang Signed-off-by: Luiz Capitulino --- cpu-common.h | 4 ++++ exec.c | 12 ++++++++++++ 2 files changed, 16 insertions(+) diff --git a/cpu-common.h b/cpu-common.h index dca5175..1fe3280 100644 --- a/cpu-common.h +++ b/cpu-common.h @@ -71,6 +71,10 @@ void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)); void cpu_unregister_map_client(void *cookie); +#ifndef CONFIG_USER_ONLY +bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr); +#endif + /* Coalesced MMIO regions are areas where write operations can be reordered. * This usually implies that write operations are side-effect free. This allows * batching which can make a major impact on performance when using diff --git a/exec.c b/exec.c index a0494c7..1b65859 100644 --- a/exec.c +++ b/exec.c @@ -4336,3 +4336,15 @@ bool virtio_is_big_endian(void) } #endif + +#ifndef CONFIG_USER_ONLY +bool cpu_physical_memory_is_io(target_phys_addr_t phys_addr) +{ + MemoryRegionSection *section; + + section = phys_page_find(phys_addr >> TARGET_PAGE_BITS); + + return !(memory_region_is_ram(section->mr) || + memory_region_is_romd(section->mr)); +} +#endif