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Thu, 25 Jan 2018 10:46:19 -0500 Received: from aserp2130.oracle.com ([141.146.126.79]:60738 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751199AbeAYPqS (ORCPT ); Thu, 25 Jan 2018 10:46:18 -0500 Subject: Re: [PATCH v2 2/2] xen: add acpi_arch_get_root_pointer() for pvh guests To: Juergen Gross , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, xen-devel@lists.xenproject.org Cc: lenb@kernel.org, rafael.j.wysocki@intel.com, mingo@redhat.com, stable@vger.kernel.org References: <20180125143639.9969-1-jgross@suse.com> <20180125143639.9969-3-jgross@suse.com> From: Boris Ostrovsky Message-ID: Date: Thu, 25 Jan 2018 10:46:05 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <20180125143639.9969-3-jgross@suse.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8784 signatures=668655 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=887 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1801250212 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On 01/25/2018 09:36 AM, Juergen Gross wrote: > Add acpi_arch_get_root_pointer() for Xen PVH guests to communicate > the address of the RSDP table given to the kernel via Xen start info. > > This makes the kernel boot again in PVH mode after on recent Xen the > RSDP was moved to higher addresses. So up to that change it was pure > luck that the legacy method to locate the RSDP was working when > running as PVH mode. > > Cc: # 4.11 > Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky