From patchwork Mon Oct 26 15:03:03 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kani, Toshi" X-Patchwork-Id: 7490471 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 45F26BEEA4 for ; Mon, 26 Oct 2015 15:07:03 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A2A7D206B5 for ; Mon, 26 Oct 2015 15:06:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AC03F206AC for ; Mon, 26 Oct 2015 15:06:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751886AbbJZPG5 (ORCPT ); Mon, 26 Oct 2015 11:06:57 -0400 Received: from g1t6219.austin.hp.com ([15.73.96.127]:34461 "EHLO g1t6219.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751874AbbJZPG5 (ORCPT ); Mon, 26 Oct 2015 11:06:57 -0400 X-Greylist: delayed 647 seconds by postgrey-1.27 at vger.kernel.org; Mon, 26 Oct 2015 11:06:57 EDT Received: from g4t3433.houston.hp.com (g4t3433.houston.hp.com [16.210.25.219]) by g1t6219.austin.hp.com (Postfix) with ESMTP id 332ADB9; Mon, 26 Oct 2015 15:06:56 +0000 (UTC) Received: from misato.fc.hp.com (misato.fc.hp.com [16.78.168.61]) by g4t3433.houston.hp.com (Postfix) with ESMTP id ADC852E; Mon, 26 Oct 2015 15:06:53 +0000 (UTC) From: Toshi Kani To: bp@alien8.de, tony.luck@intel.com, akpm@linux-foundation.org, dan.j.williams@intel.com, rjw@rjwysocki.net Cc: linux-mm@kvack.org, linux-nvdimm@lists.01.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Toshi Kani Subject: [PATCH v2 UPDATE 3/3] ACPI/APEI/EINJ: Allow memory error injection to NVDIMM Date: Mon, 26 Oct 2015 09:03:03 -0600 Message-Id: <1445871783-18365-1-git-send-email-toshi.kani@hpe.com> X-Mailer: git-send-email 2.4.3 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, 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 regular RAM. Update this check to add a call to region_intersects_pmem() to verify if a target address range is NVDIMM. This allows injecting a memory error to both RAM and NVDIMM for testing. Also, the current RAM check, page_is_ram(), is replaced with region_intersects_ram() so that it can verify a target address range with the requested size. Signed-off-by: Toshi Kani Reviewed-by: Dan Williams --- Add a blank line before if-statement. (Borislav Petkov) --- drivers/acpi/apei/einj.c | 13 +++++++++---- 1 file changed, 9 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..db21efe 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 +545,15 @@ 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 (((region_intersects_ram(base_addr, size) != REGION_INTERSECTS) && + (region_intersects_pmem(base_addr, size) != REGION_INTERSECTS)) || + ((param2 & PAGE_MASK) != PAGE_MASK)) return -EINVAL; inject: