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Date: Wed, 16 Jul 2014 18:39:05 +0200 From: Michal Nazarewicz <mina86@...a86.com> To: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>, ralf@...ux-mips.org, catalin.marinas@....com, will.deacon@....com, tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, arnd@...db.de, gregkh@...uxfoundation.org, m.szyprowski@...sung.com Cc: x86@...nel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-mips@...ux-mips.org, linux-arch@...r.kernel.org Subject: Re: [PATCH 4/4] mips: dma: Add cma support On Wed, Jul 16 2014, Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com> wrote: > Adds cma support to the mips architecture. > > cma uses memblock. However, mips uses bootmem. Does cma_early_percent_memory work correctly then? > bootmem is informed about any regions reserved by memblock Alternatively maybe it would make sense to create a new definition of dma_contiguous_reserve_area that uses bootmem and choose it based on some CONFIG_CMA_USE_BOOTMEM which would be selected by MIPS. > dma api is modified to use cma reserved memory regions when available > > Tested using cma_test. cma_test is a simple driver that assigns blocks > of memory from cma reserved sections. > > Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com> Acked-by: Michal Nazarewicz <mina86@...a86.com> > --- > arch/mips/Kconfig | 1 + > arch/mips/include/asm/Kbuild | 1 + > arch/mips/kernel/setup.c | 9 +++++++++ > arch/mips/mm/dma-default.c | 37 +++++++++++++++++++++++++------------ > 4 files changed, 36 insertions(+), 12 deletions(-) > -- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michał “mina86” Nazarewicz (o o) ooo +--<mpn@...gle.com>--<xmpp:mina86@...ber.org>--ooO--(_)--Ooo-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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