Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <5a1aa65d-1abf-6489-867b-fb84de804de2@oracle.com>
Date:   Sat, 9 Apr 2022 17:21:17 -0400
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0)
 Gecko/20100101 Thunderbird/91.7.0
Subject: Re: [PATCH] xen/balloon: don't use PV mode extra memory for zone
 device allocations
Content-Language: en-US
To:     Juergen Gross <jgross@suse.com>, xen-devel@lists.xenproject.org,
        linux-kernel@vger.kernel.org
Cc:     Stefano Stabellini <sstabellini@kernel.org>
References: <20220407093857.1485-1-jgross@suse.com>
From:   Boris Ostrovsky <boris.ostrovsky@oracle.com>
In-Reply-To: <20220407093857.1485-1-jgross@suse.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?dk53MnI0UkdaemZIbXI1TWFkYmlKZC9EU2xBU0JGRll4Z2NGZmYyUktCbytW?=
 =?utf-8?B?cmRrVkt3eHpBeGdJK25QUVJsUEhSWDg5RWl4VCtzZDBVQ3YwRGFGLzA4amhP?=
 =?utf-8?B?dkw4TmtLRmpMNHNsWGZwTWcvTFArWkgvU0N4MnFYc3VZcHdWRllwaHFocFds?=
 =?utf-8?B?Rk5XYytwVEtLSTEyekltbjVhZzk4Y29sWWtTbHZTbHhETDVEYTBXY09DYkFi?=
 =?utf-8?B?MFNjc2ptczFYVlVINWcxRUZPN2NPa3JUSXJLWlpOekNnNjlLUWJqTDFhWFRh?=
 =?utf-8?B?ejNtMWE4ckF1dTRCTjI4VHJJU3RIUUhhaTlQeGRTTHN3OUpNQ0lQR0JXYS9E?=
 =?utf-8?B?VlNUVFNSNmFxVUxyRC90dncxQTlpNkpLd2ltNmlFL2FBZjNVUFErSFFHWHFy?=
 =?utf-8?B?R3BiWEFvRWM3OGtXUk9FTXNMWGJiL1N6VHZoS25GWDZ1K0Y2eitlWVIrdkdo?=
 =?utf-8?B?aUJaUy9PeUtPQ2tuamZJT3pFVW42S1FQR0ZNVllLclR0OGdtMGFZRnVpZTVT?=
 =?utf-8?B?YUJ3ZnZybWVBN05xVEZQV09qZm5YU2RVZE5jb2VyZ2xPR1FoeTNielZoMGVr?=
 =?utf-8?B?WWVpTGkvSEpEMGJ4MzQzUUtlT2JHMnlzZzV4cXUzM05pRWdIZ0tTQXY5TkpQ?=
 =?utf-8?B?N1YwRkQ5SXZET0NoS0lSa1FvaFhUTTk2NEw3a1hVbUtYYThZUzlEbXpJeUNk?=
 =?utf-8?B?UmR1UGlyWThOQWRZeWlUamk1dTc5S2xUcHczbDNuM21ZSUw3VjFIRFZtS1JJ?=
 =?utf-8?B?aUo3NkFhMFg5OEsvQXpMb0t5eFN3ZU90NFR1WjNpcVBLUGhuQWZKemlPTWZu?=
 =?utf-8?B?YWJBdW5iSEViNmxMTU9qV2phWDY2dzZyTWVVUHlYdElQUFQ1WGdkNzBwM0E4?=
 =?utf-8?B?QiswMnhRMitYem9oaUZmcklxT0ovVFlSR1pYcDNSWUg0YjRkTkRFSGU5WmFp?=
 =?utf-8?B?S2txTFkyRUtRZERtOXpwa2VGL1RTT21ORVRYUzNkanBlaVI5c2d2WUprVmx1?=
 =?utf-8?B?RWtkcTh5MHRJci9FN3pSUGpFQ01aZGlaQWc0cDR5emJIbWN0bXJ6V2hEVTMz?=
 =?utf-8?B?MElKZkFWUzMwaFRXRmhRd05yVlFkV2lmMWxqdTZvYTNGaWFML3VybDZvTTJG?=
 =?utf-8?B?RXJTd213OXltY3JxTDdqZVAwRkFINUxScm9ZbDhmU2tlY3RBeUNuWEk5S0Zy?=
 =?utf-8?B?NElGYk55REVHTEZ5NStpbjBMK0QzWjVoaWFteVdsbkwwVUVNSkNwTVdzWjgy?=
 =?utf-8?B?eTFkMTRQUGJoMms4c3R3dzFNR3diUDkxSVZzcFhINlc2b2U4L1EyM01wK0NX?=
 =?utf-8?B?RkFmV05CaGdlVG9BT3RGeGlMazBXMGp5RmZvZHFoczNCUjBQT2lndnc3TzlM?=
 =?utf-8?B?MCtIS0lac2dVazJvVmNTV1ZVT0RqSnBZQlVWTFc4TmpIazFMajUrRng0dzNt?=
 =?utf-8?B?azVDWHlaaE9CVzlpakYxSzhnVjh4OFdPc0VOWDJLNVY1TVpmVVFnSkdEMTRE?=
 =?utf-8?B?SnFneGNGNlVoR3docWRvdGhkTXI5a0o4dlcrNndNRGRhYmRxTGF0Y1R5YUo3?=
 =?utf-8?B?ME82MHlJLzV4aWNoaFQ2d2RIT2NTMFFZcHNvYmpvOEtaYk4rMkplVnlTcUJs?=
 =?utf-8?B?RXZEOXZ2dk43ZGxObmpOQTdsWnZGOG12bWxYUS81THI0UzNhMDFoWElQSFFt?=
 =?utf-8?B?WEZqc0dtUDd4Y0pJN3lSbGJaMWlVVFlzMVIrMGR6R2xObnRycGFqSEZQRnJQ?=
 =?utf-8?B?bVJIWG5oTEdRSVJpc2prN1B3ZUdCdW1BV284T1Y4Z1B3UkVVSit5QUxvQ0xQ?=
 =?utf-8?B?L3ZDR1NzWFl3MkgvOXR5Um8vakNQdDBGN00xUldhNWZLRjEyT0NJMmUvVnNV?=
 =?utf-8?B?L29CY25EK05SUmxhM0kzUGp2aENXcXFLdHlVOTdLdGU3aFBTYUM3NEpUNjZp?=
 =?utf-8?B?VUZxd21SRFNpamhWaWsrQ0xXaUxtQnVzYkVRbXVlTDg4cno1c0pmRTU2QzFX?=
 =?utf-8?B?Z2ZhU2QySDhCbnBnekVZYUZKcmNTdE9ielUzVG00TituVERuS0hPRTFDd2Y0?=
 =?utf-8?B?bmtnMWIyYmlGZGdSRXdyZWNWMUtnS2Uxek83eXZNbjUxMTk0dThjTUlVdWRm?=
 =?utf-8?B?TzBaMWlZazZwajk5R0gwR0RTeHREMEh1MzI2dGdXM0RzRFYzT05XQ1Z6K3Fp?=
 =?utf-8?B?V2JLL0JHaUYwYk1wMUxNRVdHTGxBN0pnSnZES2xDL2dwUXdQZW9McTg3bXB6?=
 =?utf-8?B?M213eUNheEdjZmRST2dLSVhNamVhNy9Tb0V5bzJZWmQwWEVWMnpKZEo3eHBH?=
 =?utf-8?B?SGxJcVFhN1NBOEFNM0x2M2lBR0o0YmZVckhUKzFpMFdrRzI1STQ0eGRwdy94?=
 =?utf-8?Q?8OKW+GcDNoh7F44c=3D?=
X-OriginatorOrg: oracle.com
X-MS-Exchange-CrossTenant-Network-Message-Id: ed109f35-c0a5-44e7-378a-08da1a6ee60f
X-MS-Exchange-CrossTenant-AuthSource: BLAPR10MB5009.namprd10.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Apr 2022 21:21:24.1882
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: O+BM8asI0s3nAV3ufWVkwA6wOPVlJ0vYbpPOfh1hfmRAooElOndmlKXuhr9gJV8ImA+dvJv5kVDzWoR9d3YpUlyww8rQH80M1VzoY04HkhI=
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR10MB4612
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.425,18.0.858
 definitions=2022-04-09_25:2022-04-08,2022-04-09 signatures=0
X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 bulkscore=0 adultscore=0
 suspectscore=0 spamscore=0 mlxlogscore=952 phishscore=0 mlxscore=0
 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000
 definitions=main-2204090139
X-Proofpoint-ORIG-GUID: HnalseiX_rKz-v5OlGIQf8n0VZ2JDZxU
X-Proofpoint-GUID: HnalseiX_rKz-v5OlGIQf8n0VZ2JDZxU
X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_DNSWL_LOW,
        RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,
        T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


On 4/7/22 5:38 AM, Juergen Gross wrote:
> When running as a Xen PV guest use the extra memory (memory which isn't
> allocated for the guest at boot time) only for ballooning purposes and
> not for zone device allocations. This will remove some code without any
> lack of functionality.
>
> While at it move some code to get rid of another #ifdef.
>
> Remove a comment which is stale since some time now.
>
> Signed-off-by: Juergen Gross <jgross@suse.com>


Applied to for-linus-5.18


-boris