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Thu, 24 Aug 2023 21:21:33 +0000 Received: from BLAPR10MB5009.namprd10.prod.outlook.com ([fe80::878c:8797:8568:4f1a]) by BLAPR10MB5009.namprd10.prod.outlook.com ([fe80::878c:8797:8568:4f1a%3]) with mapi id 15.20.6699.028; Thu, 24 Aug 2023 21:21:33 +0000 Message-ID: <48676a7d-2100-c0d1-4e03-788cb6982fee@oracle.com> Date: Thu, 24 Aug 2023 17:21:27 -0400 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.14.0 Subject: Re: [PATCH] xen: simplify evtchn_do_upcall() call maze Content-Language: en-US To: Juergen Gross , linux-kernel@vger.kernel.org, x86@kernel.org Cc: Andy Lutomirski , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Stefano Stabellini , Oleksandr Tyshchenko , xen-devel@lists.xenproject.org References: <20230824154106.14799-1-jgross@suse.com> From: Boris Ostrovsky In-Reply-To: <20230824154106.14799-1-jgross@suse.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SA9PR11CA0002.namprd11.prod.outlook.com (2603:10b6:806:6e::7) To BLAPR10MB5009.namprd10.prod.outlook.com (2603:10b6:208:321::10) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BLAPR10MB5009:EE_|SN7PR10MB7001:EE_ X-MS-Office365-Filtering-Correlation-Id: e97abc27-3d4f-4ca9-9c1a-08dba4e816ed X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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LG7oR1DoMERka+xPxmzD5KIlj1pHmBJEuPmfeYrKaHMRI611qM82iL5vWKP8GDf6k5qliJtnJ+wdUZcrl2yjoDNtlWMha6SzNrOC5/D2NeA= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR10MB7001 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-24_18,2023-08-24_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 spamscore=0 bulkscore=0 suspectscore=0 mlxscore=0 malwarescore=0 adultscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308240185 X-Proofpoint-ORIG-GUID: EObIrr3DLyruPIkbt_lLa0OfcTVSbU3g X-Proofpoint-GUID: EObIrr3DLyruPIkbt_lLa0OfcTVSbU3g Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/24/23 11:41 AM, Juergen Gross wrote: > There are several functions involved for performing the functionality > of evtchn_do_upcall(): > > - __xen_evtchn_do_upcall() doing the real work > - xen_hvm_evtchn_do_upcall() just being a wrapper for > __xen_evtchn_do_upcall(), exposed for external callers > - xen_evtchn_do_upcall() calling __xen_evtchn_do_upcall(), too, but > without any user > > Simplify this maze by: > > - removing the unused xen_evtchn_do_upcall() > - removing xen_hvm_evtchn_do_upcall() as the only left caller of > __xen_evtchn_do_upcall(), while renaming __xen_evtchn_do_upcall() to > xen_evtchn_do_upcall() > > Signed-off-by: Juergen Gross Reviewed-by: Boris Ostrovsky