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Tue, 28 Jul 2026 02:19:50 -0700 (PDT) X-Received: by 2002:a05:6a21:9984:b0:3c3:b57b:6455 with SMTP id adf61e73a8af0-3c8ba5acf3dmr2187595637.49.1785230389753; Tue, 28 Jul 2026 02:19:49 -0700 (PDT) Received: from ZBook.gateway ([123.208.39.53]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-314bc548f5dsm48931806eec.17.2026.07.28.02.19.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Jul 2026 02:19:49 -0700 (PDT) From: Changwei Zou To: lukas@wunner.de Cc: Martin.Kepplinger-Novakovic@ginzinger.com, changwei.zou@canonical.com, davem@davemloft.net, herbert@gondor.apana.org.au, ignat@linux.win, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, martink@posteo.de Subject: Re: [PATCH v2] crypto: rsassa-pkcs1: align DMA buffer to ARCH_DMA_MINALIGN Date: Tue, 28 Jul 2026 19:19:41 +1000 Message-ID: <20260728091941.13838-1-changwei.zou@canonical.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Lukas, Thank you for your feedback and guidance. Yes, "PATCH V2" supersedes the previous patch. https://lore.kernel.org/r/20260723150107.33546-1-changwei.zou@canonical.com Although the first patch passed 10,000 iterations of stress testing, it implicitly relied on in_buf (i.e., ctx->key_size) being larger than a cache line. In PATCH V2, aligning out_buf to ARCH_DMA_MINALIGN makes the root cause clearer. I will fix the typo and switch to the CRYPTO_* alignment macros in V3. Thanks again. Kind regards, Changwei