From patchwork Tue Jul 10 08:58:01 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dou Liyang X-Patchwork-Id: 10516641 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 823AF6020F for ; Tue, 10 Jul 2018 09:03:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7016B28505 for ; Tue, 10 Jul 2018 09:03:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 634A22841F; Tue, 10 Jul 2018 09:03:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 025B52841F for ; Tue, 10 Jul 2018 09:03:25 +0000 (UTC) Received: from localhost ([::1]:46601 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fcoYP-0006ws-9M for patchwork-qemu-devel@patchwork.kernel.org; Tue, 10 Jul 2018 05:03:25 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50564) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fcoTi-0003O4-4J for qemu-devel@nongnu.org; Tue, 10 Jul 2018 04:58:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fcoTf-00042r-2i for qemu-devel@nongnu.org; Tue, 10 Jul 2018 04:58:34 -0400 Received: from mail.cn.fujitsu.com ([183.91.158.132]:55231 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fcoTe-00042X-Jq for qemu-devel@nongnu.org; Tue, 10 Jul 2018 04:58:30 -0400 X-IronPort-AV: E=Sophos;i="5.43,368,1503331200"; d="scan'208";a="42056661" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 10 Jul 2018 16:58:28 +0800 Received: from G08CNEXCHPEKD03.g08.fujitsu.local (unknown [10.167.33.85]) by cn.fujitsu.com (Postfix) with ESMTP id 7E2DB4B445DC; Tue, 10 Jul 2018 16:58:26 +0800 (CST) Received: from localhost.localdomain (10.167.226.106) by G08CNEXCHPEKD03.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.399.0; Tue, 10 Jul 2018 16:58:25 +0800 From: Dou Liyang To: Date: Tue, 10 Jul 2018 16:58:01 +0800 Message-ID: <20180710085802.30386-1-douly.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.14.3 MIME-Version: 1.0 X-Originating-IP: [10.167.226.106] X-yoursite-MailScanner-ID: 7E2DB4B445DC.AFB34 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: douly.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 183.91.158.132 Subject: [Qemu-devel] [PATCH v2 1/2] hw/acpi-build: Add a check for memory-less NUMA nodes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: imammedo@redhat.com, Dou Liyang , indou.takao@jp.fujitsu.com, ehabkost@redhat.com, mst@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Currently, Qemu ACPI builder doesn't consider the memory-less NUMA nodes, eg: -m 4G,slots=4,maxmem=8G \ -numa node,nodeid=0 \ -numa node,nodeid=1,mem=2G \ -numa node,nodeid=2,mem=2G \ -numa node,nodeid=3\ Guest Linux will report [ 0.000000] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0xffffffffffffffff] [ 0.000000] ACPI: SRAT: Node 1 PXM 1 [mem 0x00000000-0x0009ffff] [ 0.000000] ACPI: SRAT: Node 1 PXM 1 [mem 0x00100000-0x7fffffff] [ 0.000000] ACPI: SRAT: Node 2 PXM 2 [mem 0x80000000-0xbfffffff] [ 0.000000] ACPI: SRAT: Node 2 PXM 2 [mem 0x100000000-0x13fffffff] [ 0.000000] ACPI: SRAT: Node 3 PXM 3 [mem 0x140000000-0x13fffffff] [ 0.000000] ACPI: SRAT: Node 3 PXM 3 [mem 0x140000000-0x33fffffff] hotplug [mem 0x00000000-0xffffffffffffffff] and [mem 0x140000000-0x13fffffff] are bogus. Add a check to avoid building srat memory for memory-less NUMA nodes, also update the test file. Now the info in guest linux will be [ 0.000000] ACPI: SRAT: Node 1 PXM 1 [mem 0x00000000-0x0009ffff] [ 0.000000] ACPI: SRAT: Node 1 PXM 1 [mem 0x00100000-0x7fffffff] [ 0.000000] ACPI: SRAT: Node 2 PXM 2 [mem 0x80000000-0xbfffffff] [ 0.000000] ACPI: SRAT: Node 2 PXM 2 [mem 0x100000000-0x13fffffff] [ 0.000000] ACPI: SRAT: Node 3 PXM 3 [mem 0x140000000-0x33fffffff] hotplug Signed-off-by: Dou Liyang Reviewed-by: Igor Mammedov --- Note to maintainer: update ACPI tables test blobs on commit. --- hw/i386/acpi-build.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 9e8350c55d..c584642e4e 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -2392,9 +2392,12 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) mem_len = next_base - pcms->below_4g_mem_size; next_base = mem_base + mem_len; } - numamem = acpi_data_push(table_data, sizeof *numamem); - build_srat_memory(numamem, mem_base, mem_len, i - 1, - MEM_AFFINITY_ENABLED); + + if (mem_len > 0) { + numamem = acpi_data_push(table_data, sizeof *numamem); + build_srat_memory(numamem, mem_base, mem_len, i - 1, + MEM_AFFINITY_ENABLED); + } } slots = (table_data->len - numa_start) / sizeof *numamem; for (; slots < pcms->numa_nodes + 2; slots++) {