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Mon, 16 Mar 2020 14:33:50 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserp3030.oracle.com with ESMTP id 2ys8tpum4v-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 16 Mar 2020 14:33:50 +0000 Received: from abhmp0020.oracle.com (abhmp0020.oracle.com [141.146.116.26]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 02GEXlnk014515; Mon, 16 Mar 2020 14:33:47 GMT Received: from bostrovs-us.us.oracle.com (/10.152.32.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 16 Mar 2020 07:33:46 -0700 Subject: Re: [PATCH 1/2] x86/xen: Make the boot CPU idle task reliable To: Miroslav Benes , jgross@suse.com, sstabellini@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, jpoimboe@redhat.com Cc: x86@kernel.org, xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, live-patching@vger.kernel.org, jslaby@suse.cz References: <20200312142007.11488-1-mbenes@suse.cz> <20200312142007.11488-2-mbenes@suse.cz> From: Boris Ostrovsky Autocrypt: addr=boris.ostrovsky@oracle.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200312142007.11488-2-mbenes@suse.cz> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9561 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 phishscore=0 mlxscore=0 malwarescore=0 suspectscore=0 mlxlogscore=999 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2003160070 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9561 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 lowpriorityscore=0 suspectscore=0 adultscore=0 bulkscore=0 mlxlogscore=999 priorityscore=1501 clxscore=1011 malwarescore=0 mlxscore=0 phishscore=0 impostorscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2003160070 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/12/20 10:20 AM, Miroslav Benes wrote: > --- a/arch/x86/xen/xen-head.S > +++ b/arch/x86/xen/xen-head.S > @@ -35,7 +35,7 @@ SYM_CODE_START(startup_xen) > rep __ASM_SIZE(stos) > > mov %_ASM_SI, xen_start_info > - mov $init_thread_union+THREAD_SIZE, %_ASM_SP > + mov $init_thread_union+THREAD_SIZE-SIZEOF_PTREGS, %_ASM_SP This is initial_stack, isn't it? -boris