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Peter Anvin" , xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org References: <20201014175342.152712-1-jandryuk@gmail.com> <20201014175342.152712-3-jandryuk@gmail.com> <6cd9363c-ac0c-ea68-c8e7-9fd3cd30a89b@oracle.com> <4e31301b-0e57-ac89-cd71-6ad5e1a66628@citrix.com> From: boris.ostrovsky@oracle.com Organization: Oracle Corporation Message-ID: Date: Thu, 15 Oct 2020 09:17:12 -0400 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.3.2 MIME-Version: 1.0 In-Reply-To: <4e31301b-0e57-ac89-cd71-6ad5e1a66628@citrix.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9774 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 mlxscore=0 adultscore=0 bulkscore=0 mlxlogscore=999 suspectscore=0 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2010150094 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9774 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 impostorscore=0 suspectscore=0 priorityscore=1501 phishscore=0 clxscore=1015 spamscore=0 adultscore=0 mlxscore=0 malwarescore=0 bulkscore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2010150094 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/15/20 9:10 AM, Andrew Cooper wrote: > On 15/10/2020 13:37, boris.ostrovsky@oracle.com wrote: >> On 10/14/20 1:53 PM, Jason Andryuk wrote: >>> +config XEN_512GB >>> + bool "Limit Xen pv-domain memory to 512GB" >>> + depends on XEN_PV && X86_64 >> Why is X86_64 needed here? >> 512G support was implemented using a direct-mapped P2M, and is rather > beyond the virtual address capabilities of 32bit. > Yes, my point was that XEN_PV already depends on X86_64. -boris