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From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM64: implement TASK_SIZE_OF
Date: Mon, 23 Jun 2014 12:13:43 +0100	[thread overview]
Message-ID: <20140623111343.GC15907@arm.com> (raw)
In-Reply-To: <1403122209-26352-1-git-send-email-ccross@android.com>

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 at vger.kernel.org
> Signed-off-by: Colin Cross <ccross@android.com>

Thanks. Applied.

-- 
Catalin

WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Colin Cross <ccross@android.com>
Cc: "linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	Will Deacon <Will.Deacon@arm.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: [PATCH] ARM64: implement TASK_SIZE_OF
Date: Mon, 23 Jun 2014 12:13:43 +0100	[thread overview]
Message-ID: <20140623111343.GC15907@arm.com> (raw)
In-Reply-To: <1403122209-26352-1-git-send-email-ccross@android.com>

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@vger.kernel.org
> Signed-off-by: Colin Cross <ccross@android.com>

Thanks. Applied.

-- 
Catalin

  parent reply	other threads:[~2014-06-23 11:13 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-18 20:10 [PATCH] ARM64: implement TASK_SIZE_OF Colin Cross
2014-06-18 20:10 ` Colin Cross
2014-06-20  8:25 ` Will Deacon
2014-06-20  8:25   ` Will Deacon
2014-06-20 21:24   ` Colin Cross
2014-06-20 21:24     ` Colin Cross
2014-06-23 11:13 ` Catalin Marinas [this message]
2014-06-23 11:13   ` Catalin Marinas

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