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Tue, 10 Oct 2023 15:12:14 -0700 (PDT) X-Received: by 2002:a05:620a:e01:b0:773:c0d7:4ecc with SMTP id y1-20020a05620a0e0100b00773c0d74eccmr16106775qkm.12.1696975934135; Tue, 10 Oct 2023 15:12:14 -0700 (PDT) Received: from fedora ([2600:1700:1ff0:d0e0::37]) by smtp.gmail.com with ESMTPSA id g6-20020ae9e106000000b00770f2a690a8sm4638297qkm.53.2023.10.10.15.12.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Oct 2023 15:12:13 -0700 (PDT) Date: Tue, 10 Oct 2023 17:12:00 -0500 From: Andrew Halaney To: Bartosz Golaszewski Cc: Andy Gross , Bjorn Andersson , Konrad Dybcio , Elliot Berman , Krzysztof Kozlowski , Guru Das Srinagesh , Maximilian Luz , Alex Elder , Srini Kandagatla , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@quicinc.com, Bartosz Golaszewski Subject: Re: [PATCH v3 06/15] firmware: qcom: scm: smc: switch to using the SCM allocator Message-ID: References: <20231009153427.20951-1-brgl@bgdev.pl> <20231009153427.20951-7-brgl@bgdev.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20231009153427.20951-7-brgl@bgdev.pl> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Tue, 10 Oct 2023 15:13:11 -0700 (PDT) On Mon, Oct 09, 2023 at 05:34:18PM +0200, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski > > We need to allocate, map and pass a buffer to the trustzone if we have > more than 4 arguments for a given SCM calls. Let's use the new TrustZone > allocator for that memory and shrink the code in process. > > As this code lives in a different compilation unit than the rest of the > SCM code, we need to provide a helper in the form of > qcom_scm_get_tzmem_pool() that allows the SMC low-level routines to > access the SCM memory pool. > > Signed-off-by: Bartosz Golaszewski Reviewed-by: Andrew Halaney