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Wysocki" , linux-mm@kvack.org, iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v5 02/15] dma: Allow dma_get_cache_alignment() to be overridden by the arch code Message-ID: <20230525135931.GA15012@lst.de> References: <20230524171904.3967031-1-catalin.marinas@arm.com> <20230524171904.3967031-3-catalin.marinas@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230524171904.3967031-3-catalin.marinas@arm.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-Rspamd-Queue-Id: 307F814000A X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: 9kzjjhtkjf6f14wpwkhekhsxtsykmuft X-HE-Tag: 1685023175-185637 X-HE-Meta: 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 0bD04pla CJ0XHt6OghMZSYj+524NR5myISSvYfkfONF3y0B2/POv+Z/YwLFInCME7Y4d7avOjewsXK2UO3xkIAl50oltLnUR2lDxxan8PP1fqjzS+mzrGgj+eNF+G9Ia0wA2kBt1JTD20iN2YQFhRDXPzSf6yjRUdVgIiX9D6KfYUWtJMHcGz1W5MLV2A2SGx4+KkDxIJtEZ/cdGUEz2cn8dbVWk3r0s091DicreTvy2t X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, May 24, 2023 at 06:18:51PM +0100, Catalin Marinas wrote: > On arm64, ARCH_DMA_MINALIGN is larger than most cache line size > configurations deployed. Allow an architecture to override > dma_get_cache_alignment() in order to return a run-time probed value > (e.g. cache_line_size()). > > Signed-off-by: Catalin Marinas > Cc: Christoph Hellwig > Cc: Robin Murphy > Cc: Will Deacon Looks good: Reviewed-by: Christoph Hellwig