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[77.130.118.195]) by smtp.googlemail.com with ESMTPSA id w9sm11743768wmi.0.2019.04.11.10.17.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 11 Apr 2019 10:18:00 -0700 (PDT) Subject: Re: [PATCH 4/7] clocksource/arm_arch_timer: Direcly assign set_next_event workaround To: Marc Zyngier , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Russell King , Will Deacon , Catalin Marinas , Mark Rutland , Wim Van Sebroeck , Guenter Roeck , Valentin Schneider References: <20190408154907.223536-1-marc.zyngier@arm.com> <20190408154907.223536-5-marc.zyngier@arm.com> From: Daniel Lezcano Message-ID: <0d051de8-35a9-61bd-5ac0-7180f19f7c01@linaro.org> Date: Thu, 11 Apr 2019 19:17:58 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190408154907.223536-5-marc.zyngier@arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/04/2019 17:49, Marc Zyngier wrote: > When a given timer is affected by an erratum and requires an > alternative implementation of set_next_event, we do a rather > complicated dance to detect and call the workaround on each > set_next_event call. > > This is clearly idiotic, as we can perfectly detect whether > this CPU requires a workaround while setting up the clock event > device. > > This only requires the CPU-specific detection to be done a bit > earlier, and we can then safely override the set_next_event pointer > if we have a workaround associated to that CPU. > > Signed-off-by: Marc Zyngier Do you want me to take the patch ? Otherwise: Acked-by; Daniel Lezcano -- Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 045E0C10F13 for ; Thu, 11 Apr 2019 17:18:10 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CC37220693 for ; Thu, 11 Apr 2019 17:18:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="AmpzwPXU"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="Qi1JUTyJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC37220693 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=WQT6Hz0xQ4KLsQUr78uxItojGUgECboNxavZ/iBZfz8=; b=AmpzwPXUlNUvd2 p7vkC0uUcFwhbHpe8toemmMt1A1YeJiF+1GyK95ftL6mk3DhPx3gcj/cpk67irLwf+GrT8/obsT0c SaMqphkKsDCbKRL+qIRbRYnKjX+fxDEpJZtK2r8BiHZUVQy2GHK53mPlC2Uww7u1FysO0jU7k/ftX GyZT16tpW0UjTSe8n3JxMf++VaKyH4Xu0rzCiKVcZHIIq+Q60TaBuywLm1RZHAa9h0MP/Bpn6QtUV b65jtSKPQD3LP5566L5vf7qM3Minm9taehQqOsfilt4Ul+UXBHPY1gY4R5Jyaq02157B4eNy17wmv YBvA27Q/Xm6e4zJST5dQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hEdKv-0005Dc-Vz; Thu, 11 Apr 2019 17:18:05 +0000 Received: from mail-wm1-x341.google.com ([2a00:1450:4864:20::341]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hEdKs-0005DF-KI for linux-arm-kernel@lists.infradead.org; Thu, 11 Apr 2019 17:18:04 +0000 Received: by mail-wm1-x341.google.com with SMTP id z11so7742353wmi.0 for ; Thu, 11 Apr 2019 10:18:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=YU4pt8v1ib9daIqRADi7BjOhLgd2e+YgnUqd1UEAUao=; b=Qi1JUTyJf8xSMMJjZ/Rqc8mykBoujCwm8OyHhkYLaVp4U3nx4hB5KfDAGasZtB2ESH PEtmXWeZDK0l3PAKb098WunYQ+2Ha9bl1I8zNNn4dB/VRwiVbdwblfWFGvlQLk8VcCN3 upmRAEqLbfbXj4fOk0drOnP9SJF/gnnfdyfwraHx9BbESMA3S9939zuVzGHKli95iO5E mzJqgDerPSnni7L7MqcLR96tjG1eScME6WGaoWe0QA9hc30D56Evlz84/Gidi2/w/rOX P9eFCRGZbCPHQjUTksZa3f/G0LhcEeuF28PY0aOGZmFye62gtfHg0qe9QHOAbR0yXbZc H7SQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=YU4pt8v1ib9daIqRADi7BjOhLgd2e+YgnUqd1UEAUao=; b=cobsrsdOBnvpR2H0jD3r7fA1865an4WTUVBYMFv96Nz/eN2yub+x4jubC99rOYhxSM byQ6w/w9o6E7SFM7ZG2HSDE/0SwFoeWdVAGEOtddIZWHVtzR9XRiXLiyKhZIo6jzWnNv DvacrCEGbb4JW5aoogwxmgU7vfyw0JHVUabgEl9uZsccFptWz9evid+KYv/Q+c6K7Db5 ft+ee5Z5HgUwd2hm/OVcEA7+3simeYKx/ygyEtC7qoMTtwx5Mjp4vFwk2dOsI3j27Wem y93O38Mf6J6lFsJ1ycPfH0D0DN2xOd7LYjqW8WmGLhDc0MkvpCECYBPMepB6vJt31QX6 W6nw== X-Gm-Message-State: APjAAAVW43iTxvl71umhNxvWvoQwYeHl8UxD9QVWpYVTP0VERDywwiAy Lg0zfCEScMbUJLuB79B7+aQgytx2vnI= X-Google-Smtp-Source: APXvYqzA0F7UTO+IFvUALqG96IX1CGD0fL49SLxLo5xu9DMG2oFz1Q1b7LkHAZ+NkJwNZOKiJy3r8Q== X-Received: by 2002:a1c:7a03:: with SMTP id v3mr7983294wmc.58.1555003080775; Thu, 11 Apr 2019 10:18:00 -0700 (PDT) Received: from [192.168.8.100] (195.118.130.77.rev.sfr.net. [77.130.118.195]) by smtp.googlemail.com with ESMTPSA id w9sm11743768wmi.0.2019.04.11.10.17.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 11 Apr 2019 10:18:00 -0700 (PDT) Subject: Re: [PATCH 4/7] clocksource/arm_arch_timer: Direcly assign set_next_event workaround To: Marc Zyngier , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20190408154907.223536-1-marc.zyngier@arm.com> <20190408154907.223536-5-marc.zyngier@arm.com> From: Daniel Lezcano Message-ID: <0d051de8-35a9-61bd-5ac0-7180f19f7c01@linaro.org> Date: Thu, 11 Apr 2019 19:17:58 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190408154907.223536-5-marc.zyngier@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190411_101802_667940_29523CC7 X-CRM114-Status: GOOD ( 15.90 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Russell King , Catalin Marinas , Will Deacon , Wim Van Sebroeck , Valentin Schneider , Guenter Roeck Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMDgvMDQvMjAxOSAxNzo0OSwgTWFyYyBaeW5naWVyIHdyb3RlOgo+IFdoZW4gYSBnaXZlbiB0 aW1lciBpcyBhZmZlY3RlZCBieSBhbiBlcnJhdHVtIGFuZCByZXF1aXJlcyBhbgo+IGFsdGVybmF0 aXZlIGltcGxlbWVudGF0aW9uIG9mIHNldF9uZXh0X2V2ZW50LCB3ZSBkbyBhIHJhdGhlcgo+IGNv bXBsaWNhdGVkIGRhbmNlIHRvIGRldGVjdCBhbmQgY2FsbCB0aGUgd29ya2Fyb3VuZCBvbiBlYWNo Cj4gc2V0X25leHRfZXZlbnQgY2FsbC4KPiAKPiBUaGlzIGlzIGNsZWFybHkgaWRpb3RpYywgYXMg d2UgY2FuIHBlcmZlY3RseSBkZXRlY3Qgd2hldGhlcgo+IHRoaXMgQ1BVIHJlcXVpcmVzIGEgd29y a2Fyb3VuZCB3aGlsZSBzZXR0aW5nIHVwIHRoZSBjbG9jayBldmVudAo+IGRldmljZS4KPiAKPiBU aGlzIG9ubHkgcmVxdWlyZXMgdGhlIENQVS1zcGVjaWZpYyBkZXRlY3Rpb24gdG8gYmUgZG9uZSBh IGJpdAo+IGVhcmxpZXIsIGFuZCB3ZSBjYW4gdGhlbiBzYWZlbHkgb3ZlcnJpZGUgdGhlIHNldF9u ZXh0X2V2ZW50IHBvaW50ZXIKPiBpZiB3ZSBoYXZlIGEgd29ya2Fyb3VuZCBhc3NvY2lhdGVkIHRv IHRoYXQgQ1BVLgo+IAo+IFNpZ25lZC1vZmYtYnk6IE1hcmMgWnluZ2llciA8bWFyYy56eW5naWVy QGFybS5jb20+CgpEbyB5b3Ugd2FudCBtZSB0byB0YWtlIHRoZSBwYXRjaCA/CgpPdGhlcndpc2U6 CgpBY2tlZC1ieTsgRGFuaWVsIExlemNhbm8gPGRhbmllbC5sZXpjYW5vQGxpbmFyby5vcmc+CgoK LS0gCiA8aHR0cDovL3d3dy5saW5hcm8ub3JnLz4gTGluYXJvLm9yZyDilIIgT3BlbiBzb3VyY2Ug c29mdHdhcmUgZm9yIEFSTSBTb0NzCgpGb2xsb3cgTGluYXJvOiAgPGh0dHA6Ly93d3cuZmFjZWJv b2suY29tL3BhZ2VzL0xpbmFybz4gRmFjZWJvb2sgfAo8aHR0cDovL3R3aXR0ZXIuY29tLyMhL2xp bmFyb29yZz4gVHdpdHRlciB8CjxodHRwOi8vd3d3LmxpbmFyby5vcmcvbGluYXJvLWJsb2cvPiBC bG9nCgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGlu dXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRl YWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgt YXJtLWtlcm5lbAo=