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[121.45.220.93]) by smtp.gmail.com with ESMTPSA id b136sm327999pfb.73.2019.07.13.01.53.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 13 Jul 2019 01:53:09 -0700 (PDT) Subject: Re: [RFC PATCH kernel] powerpc/xive: Drop deregistered irqs To: Benjamin Herrenschmidt , linuxppc-dev@lists.ozlabs.org References: <20190712082036.40440-1-aik@ozlabs.ru> <3a34190f-560e-0b42-af38-0e39cef0beea@ozlabs.ru> From: Alexey Kardashevskiy Openpgp: preference=signencrypt Autocrypt: addr=aik@ozlabs.ru; keydata= mQINBE+rT0sBEADFEI2UtPRsLLvnRf+tI9nA8T91+jDK3NLkqV+2DKHkTGPP5qzDZpRSH6mD EePO1JqpVuIow/wGud9xaPA5uvuVgRS1q7RU8otD+7VLDFzPRiRE4Jfr2CW89Ox6BF+q5ZPV /pS4v4G9eOrw1v09lEKHB9WtiBVhhxKK1LnUjPEH3ifkOkgW7jFfoYgTdtB3XaXVgYnNPDFo PTBYsJy+wr89XfyHr2Ev7BB3Xaf7qICXdBF8MEVY8t/UFsesg4wFWOuzCfqxFmKEaPDZlTuR tfLAeVpslNfWCi5ybPlowLx6KJqOsI9R2a9o4qRXWGP7IwiMRAC3iiPyk9cknt8ee6EUIxI6 t847eFaVKI/6WcxhszI0R6Cj+N4y+1rHfkGWYWupCiHwj9DjILW9iEAncVgQmkNPpUsZECLT 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XrB5p+6ML7Bd84xOEGsj/vdaXmz1esuH7BOZAGEZfLRCHJ0GVCSssg== Message-ID: <9b1fbde4-0884-223e-446c-373f73c366e0@ozlabs.ru> Date: Sat, 13 Jul 2019 18:53:03 +1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Greg Kurz , Nicholas Piggin , Paul Mackerras , =?UTF-8?Q?C=c3=a9dric_Le_Goater?= , Alistair Popple , David Gibson Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 13/07/2019 09:47, Benjamin Herrenschmidt wrote: > On Fri, 2019-07-12 at 19:37 +1000, Alexey Kardashevskiy wrote: >> > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/powerpc/kernel/irq.c#n614 >> >> If so, then in order to do EOI, I'll need the desc which is gone, or >> I am missing the point? > > All you need is drop the local CPU priority. I know that, the question was how. I cannot use irq_chip in arch/powerpc/kernel/irq.c and I do not want to add ppc_md.enable_irqs(). -- Alexey