* Re: [PATCH v4 2/2] RISC-V: Implement sparsemem [not found] ` <alpine.DEB.2.21.9999.1908130921170.30024@viisi.sifive.com> @ 2019-08-13 16:48 ` Paul Walmsley 0 siblings, 0 replies; only message in thread From: Paul Walmsley @ 2019-08-13 16:48 UTC (permalink / raw) To: Logan Gunthorpe Cc: Greentime Hu, Rob Herring, Albert Ou, Andrew Waterman, Palmer Dabbelt, Linux Kernel Mailing List, Stephen Bates, Olof Johansson, greentime.hu, linux-riscv, Michael Clark, Christoph Hellwig, linux-mm On Tue, 13 Aug 2019, Paul Walmsley wrote: > On Tue, 13 Aug 2019, Logan Gunthorpe wrote: > > > On 2019-08-13 12:04 a.m., Greentime Hu wrote: > > > > > Every architecture with mmu defines their own pfn_valid(). > > > > Not true. Arm64, for example just uses the generic implementation in > > mmzone.h. > > arm64 seems to define their own: > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/Kconfig#n899 > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/mm/init.c#n235 > > While there are many architectures which have their own pfn_valid(); > oddly, almost none of them set HAVE_ARCH_PFN_VALID ? (fixed the linux-mm@ address) - Paul ^ permalink raw reply [flat|nested] only message in thread
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