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pr=C Message-ID: <67cf20aa-a55a-496c-b3cc-bf5317ba98be@amd.com> Date: Wed, 27 Mar 2024 10:15:30 -0400 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5] RFC: x86/pvh: Make Xen PVH entrypoint PIC for x86-64 To: Jan Beulich CC: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= , Andrew Cooper , Juergen Gross , Boris Ostrovsky , References: <20240326213847.3944-1-jason.andryuk@amd.com> <20240326214701.7015-1-jason.andryuk@amd.com> <45c20ffd-f0c0-4521-8221-c3384cd5f7c5@suse.com> Content-Language: en-US From: Jason Andryuk In-Reply-To: <45c20ffd-f0c0-4521-8221-c3384cd5f7c5@suse.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A101:EE_|SN7PR12MB7835:EE_ X-MS-Office365-Filtering-Correlation-Id: 65d70ed1-16ab-4054-45cb-08dc4e685d6e 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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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(1800799015)(36860700004)(82310400014)(376005);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Mar 2024 14:15:33.0372 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 65d70ed1-16ab-4054-45cb-08dc4e685d6e X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A101.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7835 On 2024-03-27 04:20, Jan Beulich wrote: > On 26.03.2024 22:47, Jason Andryuk wrote: >> --- a/include/xen/interface/elfnote.h >> +++ b/include/xen/interface/elfnote.h >> @@ -185,9 +185,25 @@ >> */ >> #define XEN_ELFNOTE_PHYS32_ENTRY 18 >> >> +/* >> + * Physical loading constraints for PVH kernels >> + * >> + * Used to place constraints on the guest physical loading addresses and >> + * alignment for a PVH kernel. >> + * >> + * The presence of this note indicates the kernel supports relocating itself. >> + * >> + * The note may include up to three 32bit values in the following order: >> + * - a maximum address for the entire image to be loaded below (default >> + * 0xffffffff) >> + * - a minimum address for the start of the image (default 0) >> + * - a required start alignment (default 0x200000) > > This looks to be stale now. Yes - I did not update this file. The patch is functional as the ELF Note fields in arch/x86/platform/pvh/head.S were re-ordered to match the Xen side. Regards, Jason