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Fri, 4 Dec 2020 00:43:50 +0000 From: Alex Belits To: "mark.rutland@arm.com" Subject: Re: [EXT] Re: [PATCH v5 5/9] task_isolation: Add driver-specific hooks Thread-Topic: [EXT] Re: [PATCH v5 5/9] task_isolation: Add driver-specific hooks Thread-Index: AQHWwcIjLJ3XhCtZ4UCn5Rp0YgDpdanj6HWAgAJBFAA= Date: Fri, 4 Dec 2020 00:43:49 +0000 Message-ID: References: <8d887e59ca713726f4fcb25a316e1e932b02823e.camel@marvell.com> <6e15fde56203f89ebab0565dc22177f42063ae7c.camel@marvell.com> <20201202141821.GC66958@C02TD0UTHF1T.local> In-Reply-To: <20201202141821.GC66958@C02TD0UTHF1T.local> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: arm.com; dkim=none (message not signed) header.d=none;arm.com; dmarc=none action=none header.from=marvell.com; x-originating-ip: [173.228.7.197] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: cc8e3888-161f-4167-ea14-08d897edaac0 x-ms-traffictypediagnostic: MWHPR1801MB1824: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 2020-12-02 at 14:18 +0000, Mark Rutland wrote: > External Email > > ------------------------------------------------------------------- > --- > On Mon, Nov 23, 2020 at 05:57:42PM +0000, Alex Belits wrote: > > Some drivers don't call functions that call > > task_isolation_kernel_enter() in interrupt handlers. Call it > > directly. > > I don't think putting this in drivers is the right approach. IIUC we > only need to track user<->kernel transitions, and we can do that > within > the architectural entry code before we ever reach irqchip code. I > suspect the current approacch is an artifact of that being difficult > in > the old structure of the arch code; recent rework should address > that, > and we can restruecture things further in future. I agree completely. This patch only covers irqchip drivers with unusual entry procedures. -- Alex _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel