Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754006Ab3IFOZs (ORCPT ); Fri, 6 Sep 2013 10:25:48 -0400 Received: from mga02.intel.com ([134.134.136.20]:41089 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753127Ab3IFOZq (ORCPT ); Fri, 6 Sep 2013 10:25:46 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.90,854,1371106800"; d="scan'208";a="399392311" From: Lan Tianyu To: tianyu.lan@intel.com, lenb@kernel.org, rjw@sisk.pl, yinghai@kernel.org, bhelgaas@google.com, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 1/4] ACPI/Resource: Add memory prefetch check support Date: Fri, 6 Sep 2013 10:24:43 -0400 Message-Id: <1378477486-8758-2-git-send-email-tianyu.lan@intel.com> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1378477486-8758-1-git-send-email-tianyu.lan@intel.com> References: <1378477486-8758-1-git-send-email-tianyu.lan@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1027 Lines: 30 This patch is to check mem address space's acpi resource caching ability and set prefetch flag of struct resource if it's prefetchable. Signed-off-by: Lan Tianyu --- drivers/acpi/resource.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index b7201fc..929f416 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -202,6 +202,9 @@ bool acpi_dev_resource_address_space(struct acpi_resource *ares, res->flags = acpi_dev_memresource_flags(len, addr.info.mem.write_protect, window); + + if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY) + res->flags |= IORESOURCE_PREFETCH; break; case ACPI_IO_RANGE: io_decode = addr.granularity == 0xfff ? -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/