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([2a02:8084:e84:2480:228:f8ff:fe6f:83a8]) by smtp.gmail.com with ESMTPSA id u4sm13945346wrm.24.2021.03.26.10.11.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 26 Mar 2021 10:11:50 -0700 (PDT) Subject: Re: VDSO ELF header To: Christophe Leroy , Michael Ellerman , Laurent Dufour References: <9366c258-127f-f105-abd1-6baa9a6745c5@csgroup.eu> <5b03e966-2cfd-5f0c-c48d-dea5e0001833@linux.ibm.com> <30c51951-332b-7aa8-13ba-44a0b6ae3498@linux.ibm.com> <87blb6gpkj.fsf@mpe.ellerman.id.au> <3ce8811a-9216-6164-cdf2-974b13e400d3@csgroup.eu> <4904769a-be42-cdd2-1d97-8b1889f7f723@csgroup.eu> From: Dmitry Safonov <0x7f454c46@gmail.com> Message-ID: <46e49770-04ee-2455-f2f7-b3915ceea38a@gmail.com> Date: Fri, 26 Mar 2021 17:11:49 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <4904769a-be42-cdd2-1d97-8b1889f7f723@csgroup.eu> 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: linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 3/26/21 5:07 PM, Christophe Leroy wrote: > No, the problem is that user access has to be allowed for the flush() > > A hacky solution would be to call user_access_begin() , will test that > later Yeah, cool. Will it be fine if I send the vvar patch with your Tested-by? Thanks, Dmitry