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mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from PH8PR11MB8287.namprd11.prod.outlook.com (2603:10b6:510:1c7::14) by SA0PR11MB4589.namprd11.prod.outlook.com (2603:10b6:806:9a::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9094.19; Fri, 5 Sep 2025 18:22:26 +0000 Received: from PH8PR11MB8287.namprd11.prod.outlook.com ([fe80::7e8b:2e5:8ce4:2350]) by PH8PR11MB8287.namprd11.prod.outlook.com ([fe80::7e8b:2e5:8ce4:2350%7]) with mapi id 15.20.9073.026; Fri, 5 Sep 2025 18:22:26 +0000 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable In-Reply-To: <20250905173625.8398-1-michal.wajdeczko@intel.com> References: <20250905173625.8398-1-michal.wajdeczko@intel.com> Subject: Re: [PATCH] drm/xe/debugfs: Don't expose dgfx residencies attributes on VF From: Gustavo Sousa CC: Michal Wajdeczko , Soham Purkait , Rodrigo Vivi , Riana Tauro To: Michal Wajdeczko , Date: Fri, 5 Sep 2025 15:22:22 -0300 Message-ID: <175709654211.5916.895894170330275840@intel.com> User-Agent: alot/0.12.dev22+g972188619 X-ClientProxiedBy: SJ0PR13CA0107.namprd13.prod.outlook.com (2603:10b6:a03:2c5::22) To PH8PR11MB8287.namprd11.prod.outlook.com (2603:10b6:510:1c7::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH8PR11MB8287:EE_|SA0PR11MB4589:EE_ X-MS-Office365-Filtering-Correlation-Id: 2a533e4c-e76f-40d1-3fd8-08ddeca92a5b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024; 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[drm] GT0: VF is trying to read an inaccessible register 0x35b004+0x= 0 > | RIP: 0010:xe_gt_sriov_vf_read32+0x5e2/0x8a0 [xe] > | Call Trace: > | xe_mmio_read32+0x110/0x280 [xe] > | read_residency_counter+0x42/0xd0 [xe] > | dgfx_pkg_residencies_show+0x115/0x190 [xe] > | .. [drm] Package G2 counter failed to read, ret -19 > >or > > | .. [drm] GT0: VF is trying to read an inaccessible register 0x35b004+0x= 0 > | RIP: 0010:xe_gt_sriov_vf_read32+0x5e2/0x8a0 [xe] > | Call Trace: > | xe_mmio_read32+0x110/0x280 [xe] > | read_residency_counter+0x42/0xd0 [xe] > | dgfx_pcie_link_residencies_show+0xe7/0x160 [xe] > | .. [drm] PCIE LINK L0 RESIDENCY counter failed to read, ret -19 > >Similarly, there is no point to expose inject_csc_hw_error on VFs, >as HW errors support is already disabled for VFs. > >Signed-off-by: Michal Wajdeczko >Cc: Soham Purkait >Cc: Rodrigo Vivi >Cc: Riana Tauro I posted a very similar patch[1] ~1 month ago. There was a spec-related question from Rodrigo, for which I could not find the answer. [1] https://lore.kernel.org/all/20250729-skip-residency-debugfs-for-vfs-v1-= 1-3c5edec08c8b@intel.com/ -- Gustavo Sousa >--- > drivers/gpu/drm/xe/xe_debugfs.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > >diff --git a/drivers/gpu/drm/xe/xe_debugfs.c b/drivers/gpu/drm/xe/xe_debug= fs.c >index 4b71570529a6..8be8304cb05c 100644 >--- a/drivers/gpu/drm/xe/xe_debugfs.c >+++ b/drivers/gpu/drm/xe/xe_debugfs.c >@@ -346,7 +346,7 @@ void xe_debugfs_register(struct xe_device *xe) > ARRAY_SIZE(debugfs_list), > root, minor); >=20 >- if (xe->info.platform =3D=3D XE_BATTLEMAGE) { >+ if (xe->info.platform =3D=3D XE_BATTLEMAGE && !IS_SRIOV_VF(xe)) { > drm_debugfs_create_files(debugfs_residencies, > ARRAY_SIZE(debugfs_residencies), > root, minor); >--=20 >2.47.1 >