From patchwork Mon Dec 14 23:37:26 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kani, Toshi" X-Patchwork-Id: 7850041 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 325F6BEEE1 for ; Mon, 14 Dec 2015 23:38:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6512220320 for ; Mon, 14 Dec 2015 23:38:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7637520351 for ; Mon, 14 Dec 2015 23:38:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933043AbbLNXiT (ORCPT ); Mon, 14 Dec 2015 18:38:19 -0500 Received: from g4t3425.houston.hp.com ([15.201.208.53]:34244 "EHLO g4t3425.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932990AbbLNXiR (ORCPT ); Mon, 14 Dec 2015 18:38:17 -0500 Received: from g9t2301.houston.hp.com (g9t2301.houston.hp.com [16.216.185.78]) by g4t3425.houston.hp.com (Postfix) with ESMTP id 1E68F65; Mon, 14 Dec 2015 23:38:14 +0000 (UTC) Received: from misato.fc.hp.com (misato.fc.hp.com [16.78.168.61]) by g9t2301.houston.hp.com (Postfix) with ESMTP id E0EE750; Mon, 14 Dec 2015 23:38:12 +0000 (UTC) From: Toshi Kani To: akpm@linux-foundation.org, bp@alien8.de Cc: linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Vishal Verma , linux-nvdimm@lists.01.org, linux-acpi@vger.kernel.org, Toshi Kani Subject: [PATCH 11/11] ACPI/EINJ: Allow memory error injection to NVDIMM Date: Mon, 14 Dec 2015 16:37:26 -0700 Message-Id: <1450136246-17053-11-git-send-email-toshi.kani@hpe.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1450136246-17053-1-git-send-email-toshi.kani@hpe.com> References: <1450136246-17053-1-git-send-email-toshi.kani@hpe.com> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In the case of memory error injection, einj_error_inject() checks if a target address is System RAM. Change this check to allow injecting a memory error to NVDIMM by calling region_intersects() with "Persistent Memory". This enables memory error testing on both System RAM and NVDIMM. In addition, page_is_ram() is replaced with region_intersects() with IORESOURCE_SYSTEM_RAM, so that it can verify a target address range with the requested size. Cc: Rafael J. Wysocki Cc: Borislav Petkov Cc: Vishal Verma Cc: linux-nvdimm@lists.01.org Cc: linux-acpi@vger.kernel.org Acked-by: Tony Luck Reviewed-by: Dan Williams Signed-off-by: Toshi Kani --- drivers/acpi/apei/einj.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c index 0431883..cad6fd7 100644 --- a/drivers/acpi/apei/einj.c +++ b/drivers/acpi/apei/einj.c @@ -519,7 +519,7 @@ static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, u64 param3, u64 param4) { int rc; - unsigned long pfn; + u64 base_addr, size; /* If user manually set "flags", make sure it is legal */ if (flags && (flags & @@ -545,10 +545,17 @@ static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, /* * Disallow crazy address masks that give BIOS leeway to pick * injection address almost anywhere. Insist on page or - * better granularity and that target address is normal RAM. + * better granularity and that target address is normal RAM or + * NVDIMM. */ - pfn = PFN_DOWN(param1 & param2); - if (!page_is_ram(pfn) || ((param2 & PAGE_MASK) != PAGE_MASK)) + base_addr = param1 & param2; + size = ~param2 + 1; + + if (((param2 & PAGE_MASK) != PAGE_MASK) || + ((region_intersects(base_addr, size, IORESOURCE_SYSTEM_RAM, + NULL) != REGION_INTERSECTS) && + (region_intersects(base_addr, size, IORESOURCE_MEM, + "Persistent Memory") != REGION_INTERSECTS))) return -EINVAL; inject: