From patchwork Sat Aug 1 03:25:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Williams X-Patchwork-Id: 11695711 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7FB58138A for ; Sat, 1 Aug 2020 03:41:34 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 691412083E for ; Sat, 1 Aug 2020 03:41:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 691412083E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 602C61296135C; Fri, 31 Jul 2020 20:41:34 -0700 (PDT) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=192.55.52.151; helo=mga17.intel.com; envelope-from=dan.j.williams@intel.com; receiver= Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id A8A8C1296135E for ; Fri, 31 Jul 2020 20:41:31 -0700 (PDT) IronPort-SDR: gyo3CLBJ6gNPkoLKK+Es9yyfvRY9BJieWVk6xEFI4r0M8QztjoHICnLQirKsp8oORxPadrKqX0 LCoenCu9kckg== X-IronPort-AV: E=McAfee;i="6000,8403,9699"; a="131964177" X-IronPort-AV: E=Sophos;i="5.75,420,1589266800"; d="scan'208";a="131964177" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jul 2020 20:41:30 -0700 IronPort-SDR: ACjauyPXTAtRnuGjFD+kfUp9GQXfxCZ+bkUw//4tufW1ljNVSx6Bk1froCEMY6X3U9XXyfmlwB YPQG2AiZldaQ== X-IronPort-AV: E=Sophos;i="5.75,420,1589266800"; d="scan'208";a="305244426" Received: from dwillia2-desk3.jf.intel.com (HELO dwillia2-desk3.amr.corp.intel.com) ([10.54.39.16]) by orsmga002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jul 2020 20:41:30 -0700 Subject: [PATCH v3 02/23] x86/numa: Add 'nohmat' option From: Dan Williams To: akpm@linux-foundation.org Date: Fri, 31 Jul 2020 20:25:12 -0700 Message-ID: <159625231266.3040297.2759117253481288037.stgit@dwillia2-desk3.amr.corp.intel.com> In-Reply-To: <159625229779.3040297.11363509688097221416.stgit@dwillia2-desk3.amr.corp.intel.com> References: <159625229779.3040297.11363509688097221416.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: StGit/0.18-3-g996c MIME-Version: 1.0 Message-ID-Hash: PU3QVA775V65ICKANA6GNK6HZKJYPHQW X-Message-ID-Hash: PU3QVA775V65ICKANA6GNK6HZKJYPHQW X-MailFrom: dan.j.williams@intel.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header CC: x86@kernel.org, "Rafael J. Wysocki" , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , ard.biesheuvel@linaro.org, linux-mm@kvack.org, linux-nvdimm@lists.01.org, joao.m.martins@oracle.com, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, dri-devel@lists.freedesktop.org X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Disable parsing of the HMAT for debug, to workaround broken platform instances, or cases where it is otherwise not wanted. Cc: x86@kernel.org Cc: "Rafael J. Wysocki" Cc: Dave Hansen Cc: Andy Lutomirski Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Signed-off-by: Dan Williams --- arch/x86/mm/numa.c | 2 ++ drivers/acpi/numa/hmat.c | 8 +++++++- include/acpi/acpi_numa.h | 8 ++++++++ 3 files changed, 17 insertions(+), 1 deletion(-) diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 87c52822cc44..f3805bbaa784 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -41,6 +41,8 @@ static __init int numa_setup(char *opt) return numa_emu_cmdline(opt + 5); if (!strncmp(opt, "noacpi", 6)) disable_srat(); + if (!strncmp(opt, "nohmat", 6)) + disable_hmat(); return 0; } early_param("numa", numa_setup); diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c index 2c32cfb72370..a12e36a12618 100644 --- a/drivers/acpi/numa/hmat.c +++ b/drivers/acpi/numa/hmat.c @@ -26,6 +26,12 @@ #include static u8 hmat_revision; +static int hmat_disable __initdata; + +void __init disable_hmat(void) +{ + hmat_disable = 1; +} static LIST_HEAD(targets); static LIST_HEAD(initiators); @@ -814,7 +820,7 @@ static __init int hmat_init(void) enum acpi_hmat_type i; acpi_status status; - if (srat_disabled()) + if (srat_disabled() || hmat_disable) return 0; status = acpi_get_table(ACPI_SIG_SRAT, 0, &tbl); diff --git a/include/acpi/acpi_numa.h b/include/acpi/acpi_numa.h index 8784183b2204..0e9302285f14 100644 --- a/include/acpi/acpi_numa.h +++ b/include/acpi/acpi_numa.h @@ -27,4 +27,12 @@ static inline void disable_srat(void) { } #endif /* CONFIG_ACPI_NUMA */ + +#ifdef CONFIG_ACPI_HMAT +extern void disable_hmat(void); +#else /* CONFIG_ACPI_HMAT */ +static inline void disable_hmat(void) +{ +} +#endif /* CONFIG_ACPI_HMAT */ #endif /* __ACP_NUMA_H */