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Thu, 12 Jul 2018 17:28:19 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserv0021.oracle.com (8.14.4/8.14.4) with ESMTP id w6CHSIVf026359 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 12 Jul 2018 17:28:18 GMT Received: from abhmp0010.oracle.com (abhmp0010.oracle.com [141.146.116.16]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w6CHSIPG016130; Thu, 12 Jul 2018 17:28:18 GMT Received: from dhcp-burlington7-2nd-B-east-10-152-55-162.usdhcp.oraclecorp.com (/10.152.32.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 12 Jul 2018 10:28:17 -0700 Subject: Re: [PATCH v2] xen: setup pv irq ops vector earlier To: Juergen Gross , linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org Cc: hpa@zytor.com, tglx@linutronix.de, mingo@redhat.com, stable@vger.kernel.org References: <20180712154034.28010-1-jgross@suse.com> From: Boris Ostrovsky Openpgp: preference=signencrypt Autocrypt: addr=boris.ostrovsky@oracle.com; 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Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: <20180712154034.28010-1-jgross@suse.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8951 signatures=668706 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=797 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807120184 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/12/2018 11:40 AM, Juergen Gross wrote: > Setting pv_irq_ops for Xen PV domains should be done as early as > possible in order to support e.g. very early printk() usage. > > The same applies to xen_vcpu_info_reset(0), as it is needed for the > pv irq ops. > > Move the call of xen_setup_machphys_mapping() after initializing the > pv functions as it contains a WARN_ON(), too. > > Remove the no longer necessary conditional in xen_init_irq_ops() > from PVH V1 times to make clear this is a PV only function. > > Cc: # 4.14 > Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky