On Tue, Jun 13, 2023 at 04:42:40PM +0000, Christophe Leroy wrote: > > > Le 13/06/2023 à 17:52, Catalin Marinas a écrit : > > Hi, > > > > The ARCH_KMALLOC_MINALIGN reduction series defines a generic > > ARCH_DMA_MINALIGN in linux/cache.h: > > > > https://lore.kernel.org/r/20230612153201.554742-2-catalin.mari...@arm.com/ > > > > Unfortunately, this causes a duplicate definition warning for > > microblaze, powerpc (32-bit only) and sh as these architectures define > > ARCH_DMA_MINALIGN in a different file than asm/cache.h. Move the macro > > to asm/cache.h to avoid this issue and also bring them in line with the > > other architectures. > > What about mips ? > > arch/mips/include/asm/mach-generic/kmalloc.h:#define ARCH_DMA_MINALIGN > 128 > arch/mips/include/asm/mach-ip32/kmalloc.h:#define ARCH_DMA_MINALIGN 32 > arch/mips/include/asm/mach-ip32/kmalloc.h:#define ARCH_DMA_MINALIGN 128 > arch/mips/include/asm/mach-n64/kmalloc.h:#define ARCH_DMA_MINALIGN > L1_CACHE_BYTES > arch/mips/include/asm/mach-tx49xx/kmalloc.h:#define ARCH_DMA_MINALIGN > L1_CACHE_BYTES
Sorry, I should have mentioned it in the cover letter (discussed here - https://lore.kernel.org/r/zihpaixb%2f0ve7...@arm.com/). These kmalloc.h files are included in asm/cache.h, based on which machine is enabled, so there's no problem for mips. It makes more sense to keep them in those mach-*/kmalloc.h files instead of having lots of #ifdefs in cache.h. -- Catalin
