From nobody Fri Oct 18 08:35:57 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1721122487; cv=none; d=zohomail.com; s=zohoarc; b=VebSUl10/mSeyrgQ4qYi9n5PCHYEqAoyd1FJh+0yOLEUO3Mrd12uvdBULGrqr2g03ACD9/WMrKGPq/S3hQY36P7DkQG0i/ps0/74Mb5LkYX/cXXS8VwXOs6YAcEw7nuypCq+WLIMYZ0htQenVX5Q0Sxqcb8hGSv8BbnFROQIc0A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1721122487; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=qbmKPpTsCEnytdDZM46Pn6lZlmZXD4Tin+ZNefWZp94=; b=iH+8MIjxgIArcAY/dXPjnKM2WplOo0/wURDhwKdAnUZVjMG/n8qwDAjRMQFxbtF0E6FBIS4yc6EZF0lcTXYXCyXl9/VTOxF4Z/yAxrGL7H2jbjQaeprli2DsW4qx6bq1CuY/aQp37fjf2xDNhLAktwNfkyTBPFd6gWehdm4xi/c= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1721122487802475.4317081831041; Tue, 16 Jul 2024 02:34:47 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTeZm-0004Ls-Sl; Tue, 16 Jul 2024 05:34:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTeZk-00049d-78 for qemu-devel@nongnu.org; Tue, 16 Jul 2024 05:34:24 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTeZh-0006BG-Mf for qemu-devel@nongnu.org; Tue, 16 Jul 2024 05:34:23 -0400 Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-482-P_Lp93w5MACMQAa0zG3QuQ-1; Tue, 16 Jul 2024 05:34:14 -0400 Received: by mail-wm1-f71.google.com with SMTP id 5b1f17b1804b1-4272718b9b0so37753125e9.1 for ; Tue, 16 Jul 2024 02:34:14 -0700 (PDT) Received: from avogadro.local ([151.95.101.29]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-427a5ef44b4sm117935315e9.42.2024.07.16.02.34.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jul 2024 02:34:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1721122459; 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=qbmKPpTsCEnytdDZM46Pn6lZlmZXD4Tin+ZNefWZp94=; b=T8qHFlIydMvI/AEJE+ecIoZ9S85KeDakkZjabHafnVfNtHZzQH2/ZJPoppVqVOzlXdZb9M csFyNdule3ZlqxGtpgMpCZw0VvLJw43KCvZ73usfSJeNQHeaY+RiJf9rXrPuP0q9oc+dAB BKAjWIyDZHklzWcGMNKYn34mRZxvTBg= X-MC-Unique: P_Lp93w5MACMQAa0zG3QuQ-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721122452; x=1721727252; 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=qbmKPpTsCEnytdDZM46Pn6lZlmZXD4Tin+ZNefWZp94=; b=h72Ee/Q9VoGaHTAtTMQRhfXvfXE3qDn1pffKfcHt7v6Mn33//hvqN5j9fFflRc4BV6 JjFVQF4gNd2G51MSg95qH917qdh+xBzRvZ0gwu5uvpid1bK5raSel/WVZHJCAwKAt7hd ceH5zKVQrPPc4FNHgS5XA6FBlvF90KjB77CvOdlnq4uitjMz9ldo6WM9a2z5LHmUwuUF LcsZue3biBmulL7ZGALdvfC1dQJIHolZOiYS0yaXOsWirtQR0ENz5vtGsc5skX/vXw+n h/SLPcHpqddUqPJ/OOmc9frr9sAIr/UvzUxWPsKgzOvA1FEQeOw1ulq9vqpWoGUUPs6I Btmw== X-Gm-Message-State: AOJu0Yzsng5BBxMOOU3lCoDGe7KGt1z2VVXuzX8Uq1gsQ7HOpj9sZmMl Nh1nw3fyP3v7/6cHxS8ag+HEZ/R87grI5yTk+kpbcq0lpuXCbxIslsuF1Pzc90XyAXbkam6PxOy Wk8VA8fOeE7w3h96xVbi5WpFMuP3p5cGZSAs3QXoNN1+MftijASRUg4xiTUpkegQbKuhxqj8XLc KMg5Vsu7ep1j33WYyWpotGzxiBUwAlLwpVWW0f X-Received: by 2002:a05:600c:3589:b0:426:6f3e:feef with SMTP id 5b1f17b1804b1-427ba69775cmr12111875e9.29.1721122452387; Tue, 16 Jul 2024 02:34:12 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGWpajKwfeOpmKzBW5f4jWqcm+C/WCC0Z8L5JUCumUCRPmIgaUNRZoi9RDA5Mb+RqFcMnNv2Q== X-Received: by 2002:a05:600c:3589:b0:426:6f3e:feef with SMTP id 5b1f17b1804b1-427ba69775cmr12111755e9.29.1721122452124; Tue, 16 Jul 2024 02:34:12 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: taisei1212@outlook.jp Subject: [PATCH 1/2] hpet: fix clamping of period Date: Tue, 16 Jul 2024 11:34:06 +0200 Message-ID: <20240716093407.194065-2-pbonzini@redhat.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240716093407.194065-1-pbonzini@redhat.com> References: <20240716093407.194065-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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_H4=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1721122488481116600 Content-Type: text/plain; charset="utf-8" When writing a new period, the clamping should use a maximum value rather than a bit mask. Also, when writing the high bits new_val is shifted right by 32, so the maximum allowed period should also be shifted right. Signed-off-by: Paolo Bonzini --- hw/timer/hpet.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/hw/timer/hpet.c b/hw/timer/hpet.c index 01efe4885db..16be1278d09 100644 --- a/hw/timer/hpet.c +++ b/hw/timer/hpet.c @@ -548,7 +548,9 @@ static void hpet_ram_write(void *opaque, hwaddr addr, * FIXME: Clamp period to reasonable min value? * Clamp period to reasonable max value */ - new_val &=3D (timer->config & HPET_TN_32BIT ? ~0u : ~0ull)= >> 1; + if (timer->config & HPET_TN_32_BIT) { + new_val =3D MIN(new_val, ~0u >> 1); + } timer->period =3D (timer->period & 0xffffffff00000000ULL) | new_val; } @@ -567,7 +569,7 @@ static void hpet_ram_write(void *opaque, hwaddr addr, * FIXME: Clamp period to reasonable min value? * Clamp period to reasonable max value */ - new_val &=3D (timer->config & HPET_TN_32BIT ? ~0u : ~0ull)= >> 1; + new_val =3D MIN(new_val, ~0u >> 1); timer->period =3D (timer->period & 0xffffffffULL) | new_val << 32; } --=20 2.45.2