linux-kernel - Re: [Linaro-mm-sig] [PATCH 8/9] ARM: integrate CMA with DMA-mapping subsystem

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 14 Oct 2011 10:03:18 +0530
From:	Subash Patel <subashrp@...il.com>
To:	Marek Szyprowski <m.szyprowski@...sung.com>
CC:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-media@...r.kernel.org, linux-mm@...ck.org,
	linaro-mm-sig@...ts.linaro.org,
	Daniel Walker <dwalker@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	Jonathan Corbet <corbet@....net>, Mel Gorman <mel@....ul.ie>,
	Chunsang Jeong <chunsang.jeong@...aro.org>,
	Michal Nazarewicz <mina86@...a86.com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Jesse Barker <jesse.barker@...aro.org>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Ankita Garg <ankita@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [Linaro-mm-sig] [PATCH 8/9] ARM: integrate CMA with DMA-mapping
 subsystem

Hi Marek,

As informed to you in private over IRC, below piece of code broke during 
booting EXYNOS4:SMDKV310 with ZONE_DMA enabled.


On 10/06/2011 07:24 PM, Marek Szyprowski wrote:
...
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> index fbdd12e..9c27fbd 100644
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -21,6 +21,7 @@
>   #include<linux/gfp.h>
>   #include<linux/memblock.h>
>   #include<linux/sort.h>
> +#include<linux/dma-contiguous.h>
>
>   #include<asm/mach-types.h>
>   #include<asm/prom.h>
> @@ -371,6 +372,13 @@ void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc)
>   	if (mdesc->reserve)
>   		mdesc->reserve();
>
> +	/* reserve memory for DMA contigouos allocations */
> +#ifdef CONFIG_ZONE_DMA
> +	dma_contiguous_reserve(PHYS_OFFSET + mdesc->dma_zone_size - 1);
> +#else
> +	dma_contiguous_reserve(0);
> +#endif
> +
>   	memblock_analyze();
>   	memblock_dump_all();
>   }
Regards,
Subash
--
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/