From patchwork Wed Oct 21 17:38:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 11849571 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 B421B14B2 for ; Wed, 21 Oct 2020 18:02:32 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 478B021D6C for ; Wed, 21 Oct 2020 18:02:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="c/cCOY9u" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 478B021D6C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:42964 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kVIRT-0000IP-5u for patchwork-qemu-devel@patchwork.kernel.org; Wed, 21 Oct 2020 14:02:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52024) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVI4A-0006sX-J4 for qemu-devel@nongnu.org; Wed, 21 Oct 2020 13:38:26 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:54508) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kVI48-0006We-E6 for qemu-devel@nongnu.org; Wed, 21 Oct 2020 13:38:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603301898; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=WMGo54MOAQhEJMWck8zBqfGUrL7xPSbuYgDgiKKm1lI=; b=c/cCOY9utAh6TUbIW/K9CMRy3XDo3jKznZx11bYQ4GNImM52PtndpAmrVPxtUL3vlIlzmM d1Q1bbS5cZfWrpAQC2+uM8gJql0vxbb7nLEjSgPX7RZYVKxaDX7/nSbkGR1coC/BOwdaLd XyoNrmE4SVoFOfpdwQH/YqrH25qLyJI= Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-190-vQrX_7i2MQi-wwtQI8OLHw-1; Wed, 21 Oct 2020 13:38:16 -0400 X-MC-Unique: vQrX_7i2MQi-wwtQI8OLHw-1 Received: by mail-wm1-f71.google.com with SMTP id 13so1887350wmf.0 for ; Wed, 21 Oct 2020 10:38:16 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=WMGo54MOAQhEJMWck8zBqfGUrL7xPSbuYgDgiKKm1lI=; b=Rgw5Ik6yPyd4nBmKGEbpqgLAP9keonNS/dFbl/Bb7oVOWpr1nnPHe9CRhRjZu5eoPS KcsuGfSW6pnc44wNx9ycrTkGdaBNv7LGYDUxLVSfSdZIjI0xhjk+4elnAfkfdDVKQ/72 p69PZxL8Qr4pGzEK62MuBhtDzHGoSmmbciIrr4eUI49dsh/lNgGd66u9LMeNnF1ToDdj w+LVfwNXk20q8VbtXCa9o54F2j7J22p118ZckKc4qA3FCkx8xjEIazsUqwe4H4rFcfmY IdwCTjxEiMSG6iGzzoSLKkkIPiJTeQ/4KTTV7k+hI1PUozQXOHx8H5mnNi9j+TLaoliP 21DA== X-Gm-Message-State: AOAM531Zwpg1D6yC2vNatokj9yXyDRbrLWLJqoyLTY1dkuqeg8fFRVYL KLBkxtoVrQnqqoYhAI2bJiEajgIq4qDgG+Hi/JFv7gqjZ61zs+Glbe4mEpn0++y8FNIXJfmbi+2 2rinxMEnH5X7axis= X-Received: by 2002:adf:bbcb:: with SMTP id z11mr5960172wrg.130.1603301895420; Wed, 21 Oct 2020 10:38:15 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyqWwaPMFs9HY/4pT1v+LVeU18l21LHFTPFgJ+N9JgO19NPb9P7gX+ExBtD/x7p9gOZ+Qy8Qw== X-Received: by 2002:adf:bbcb:: with SMTP id z11mr5960158wrg.130.1603301895246; Wed, 21 Oct 2020 10:38:15 -0700 (PDT) Received: from x1w.redhat.com (237.red-88-18-140.staticip.rima-tde.net. [88.18.140.237]) by smtp.gmail.com with ESMTPSA id o5sm4650076wrw.76.2020.10.21.10.38.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2020 10:38:14 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: Richard Henderson , qemu-devel@nongnu.org Subject: [PATCH v5 2/2] util/oslib: Assert qemu_try_memalign() alignment is a power of 2 Date: Wed, 21 Oct 2020 19:38:03 +0200 Message-Id: <20201021173803.2619054-3-philmd@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201021173803.2619054-1-philmd@redhat.com> References: <20201021173803.2619054-1-philmd@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=philmd@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/20 22:12:28 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Stefan Weil Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" qemu_try_memalign() expects a power of 2 alignment: - posix_memalign(3): The address of the allocated memory will be a multiple of alignment, which must be a power of two and a multiple of sizeof(void *). - _aligned_malloc() The alignment value, which must be an integer power of 2. Signed-off-by: Philippe Mathieu-Daudé --- util/oslib-posix.c | 2 ++ util/oslib-win32.c | 1 + 2 files changed, 3 insertions(+) diff --git a/util/oslib-posix.c b/util/oslib-posix.c index f15234b5c03..3e022d7206b 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -200,6 +200,8 @@ void *qemu_try_memalign(size_t alignment, size_t size) if (alignment < sizeof(void*)) { alignment = sizeof(void*); + } else { + g_assert(is_power_of_2(alignment)); } #if defined(CONFIG_POSIX_MEMALIGN) diff --git a/util/oslib-win32.c b/util/oslib-win32.c index 29dd05d59d7..72e4ee910ce 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -58,6 +58,7 @@ void *qemu_try_memalign(size_t alignment, size_t size) void *ptr; g_assert(size != 0); + g_assert(is_power_of_2(alignment)); ptr = _aligned_malloc(alignment, size); trace_qemu_memalign(alignment, size, ptr); return ptr;