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Tue, 20 Jul 2021 21:48:04 -0700 Received: from Bumblebee.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2242.4 via Frontend Transport; Tue, 20 Jul 2021 23:48:03 -0500 From: Anson Jacob To: , , , , , , CC: , , , , , , , , Subject: [RFC v2 0/2] PPC: Add generic FPU api similar to x86 Date: Wed, 21 Jul 2021 00:47:59 -0400 Message-ID: <20210721044801.840501-1-Anson.Jacob@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: b6b57cd7-6f0f-41f0-30a0-08d94c02bad3 X-MS-TrafficTypeDiagnostic: MWHPR12MB1904: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:7219; 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:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(4636009)(136003)(346002)(376002)(396003)(39860400002)(36840700001)(46966006)(5660300002)(4326008)(2906002)(86362001)(186003)(8676002)(47076005)(1076003)(6666004)(478600001)(2616005)(110136005)(336012)(316002)(54906003)(36860700001)(70206006)(7696005)(36756003)(356005)(8936002)(81166007)(4744005)(426003)(26005)(70586007)(83380400001)(82740400003)(82310400003)(41533002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Jul 2021 04:48:05.6594 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b6b57cd7-6f0f-41f0-30a0-08d94c02bad3 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=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT055.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR12MB1904 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an attempt to have generic FPU enable/disable calls similar to x86. So that we can simplify gpu/drm/amd/display/dc/os_types.h Also adds FPU correctness logic seen in x86. v2: - Added asm/fpu/api.h powerpc variant with kernel_fpu_begin/end() and kernel_fpu_enabled() declarations - Updated kernel_fpu_enabled as EXPORT_SYMBOL_GPL - Got rid of macro switch for PPC in dc/os_types.h as header file with same name as x86 is added by previous patch in the series Anson Jacob (2): ppc/fpu: Add generic FPU api similar to x86 drm/amd/display: Use PPC FPU functions arch/powerpc/include/asm/fpu/api.h | 18 +++ arch/powerpc/include/asm/switch_to.h | 25 +---- arch/powerpc/kernel/process.c | 130 ++++++++++++++++++++++ drivers/gpu/drm/amd/display/dc/os_types.h | 29 ----- 4 files changed, 151 insertions(+), 51 deletions(-) create mode 100644 arch/powerpc/include/asm/fpu/api.h -- 2.25.1