linux-kernel - Re: [PATCH] ARM64: implement TASK_SIZE

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Message-ID: <20140623111343.GC15907@arm.com>
Date:	Mon, 23 Jun 2014 12:13:43 +0100
From:	Catalin Marinas <catalin.marinas@....com>
To:	Colin Cross <ccross@...roid.com>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Will Deacon <Will.Deacon@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH] ARM64: implement TASK_SIZE_OF

On Wed, Jun 18, 2014 at 09:10:09PM +0100, Colin Cross wrote:
> include/linux/sched.h implements TASK_SIZE_OF as TASK_SIZE if it
> is not set by the architecture headers.  TASK_SIZE uses the
> current task to determine the size of the virtual address space.
> On a 64-bit kernel this will cause reading /proc/pid/pagemap of a
> 64-bit process from a 32-bit process to return EOF when it reads
> past 0xffffffff.
> 
> Implement TASK_SIZE_OF exactly the same as TASK_SIZE with
> test_tsk_thread_flag instead of test_thread_flag.
> 
> Cc: stable@...r.kernel.org
> Signed-off-by: Colin Cross <ccross@...roid.com>

Thanks. Applied.

-- 
Catalin
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