From patchwork Wed Dec 6 10:43:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuntao Wang X-Patchwork-Id: 750741 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="IFaFwG6/" Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0674F1A2; Wed, 6 Dec 2023 02:44:57 -0800 (PST) Received: by mail-pf1-x42c.google.com with SMTP id d2e1a72fcca58-6ce32821a53so2303569b3a.0; Wed, 06 Dec 2023 02:44:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1701859496; x=1702464296; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=yUbG7u0jbaZMkf4gI0vKWjEkxNyQgQiNc/X6JTyz4gI=; b=IFaFwG6/45k4eNk0ftGX+GZyObRX9W4aaF7P6ZeNPvKSAP1+YgD8Ge2a7PTlEw8XeI 70H+VX5FxmrtKZhMtvnS7elnI0+ptxmmAk90FJ9xyssluED29Z+RMSkviJp5+6eMxu63 Qhpei5nZRoa2sG5fwdHuwB6L0X/QlSifehePKUi/EuXLtor82KV1/PtHzgTQibUFuOfC QwgDcyavJkl8I3oFUDLmRiVrbhcVmjLa4r4dhhw9flJDlM2U3E2kPyGl6D8x4SA8L0db hQZ0UKpYENt7Kq3p5CUZ8DLzvu6v6d70yvzqG44Xt3dTPcyktWrZBimijObyo8D+Gkl9 Ocpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701859496; x=1702464296; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=yUbG7u0jbaZMkf4gI0vKWjEkxNyQgQiNc/X6JTyz4gI=; b=H4atiZXlv6Gu7Z0H4LRZDZDpECgihT9Jb+MbUlK5CwKdi8cyLw/lZtg1sYJ3+/xaCF ZpOuwFOudxEXcXowdxzjgeTPJh+M31PYbjpS/mnqxV5UoAzKe9itSTstXL1gcO5MIDjF fPJ23QXgO+aT5KNNPXTRi3ml/qYWOTfH21otu3phHkTbRBOvK3/URGUnWmlIA5AvOZCy JS7ipoywqkQD7up1503+5gFLnuwS1aa37E32XMI78CVVj25xqz/3USNWT479eu9dNT3k ZN1PmyuejTMGZJc+bNevAsiJn050BmjWsnbt8EtUscwhSYOCJqUZbjVUnqR1bLh/1+ed uXnA== X-Gm-Message-State: AOJu0YxTmr3Sum1QlVU1+CpP15Pw9OkQJNAP/e8otPsUfZAF6JeDORvR C7mtBhoTdIon3wItySP8vetgJ1gmUg4= X-Google-Smtp-Source: AGHT+IEOvnRPONAZ08KIyNsSU3q0UEwbfqeKstt/+KCr2hQhuCEy/WZh5KH+oIOiJ56oeNICNJZnig== X-Received: by 2002:a05:6a20:c1a6:b0:18c:23b0:39bd with SMTP id bg38-20020a056a20c1a600b0018c23b039bdmr529458pzb.16.1701859496131; Wed, 06 Dec 2023 02:44:56 -0800 (PST) Received: from code.. ([144.202.108.46]) by smtp.gmail.com with ESMTPSA id d11-20020a17090a2a4b00b00286596548bcsm10020811pjg.37.2023.12.06.02.44.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Dec 2023 02:44:55 -0800 (PST) From: Yuntao Wang To: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Cc: "Rafael J. Wysocki" , Len Brown , Dan Williams , Alison Schofield , Dave Hansen , Yuntao Wang Subject: [PATCH 3/3] ACPI/NUMA: Fix the logic of getting the fake_pxm value Date: Wed, 6 Dec 2023 18:43:18 +0800 Message-ID: <20231206104318.182759-4-ytcoode@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231206104318.182759-1-ytcoode@gmail.com> References: <20231206104318.182759-1-ytcoode@gmail.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The for loop does not iterate over the last element of the node_to_pxm_map array. This could lead to a conflict between the final fake_pxm value and the existing pxm values. That is, the final fake_pxm value can not be guaranteed to be an unused pxm value. Signed-off-by: Yuntao Wang --- drivers/acpi/numa/srat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c index d58e5ef424f2..0214518fc582 100644 --- a/drivers/acpi/numa/srat.c +++ b/drivers/acpi/numa/srat.c @@ -183,7 +183,7 @@ static int __init slit_valid(struct acpi_table_slit *slit) int i, j; int d = slit->locality_count; for (i = 0; i < d; i++) { - for (j = 0; j < d; j++) { + for (j = 0; j < d; j++) { u8 val = slit->entry[d*i + j]; if (i == j) { if (val != LOCAL_DISTANCE) @@ -532,7 +532,7 @@ int __init acpi_numa_init(void) */ /* fake_pxm is the next unused PXM value after SRAT parsing */ - for (i = 0, fake_pxm = -1; i < MAX_NUMNODES - 1; i++) { + for (i = 0, fake_pxm = -1; i < MAX_NUMNODES; i++) { if (node_to_pxm_map[i] > fake_pxm) fake_pxm = node_to_pxm_map[i]; }