From: Yinghai Lu <yinghai@kernel.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org, mingo@redhat.com, hpa@zytor.com,
tglx@linutronix.de, mikpe@it.uu.se, alex.shi@intel.com,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-tip-commits@vger.kernel.org
Subject: Re: [tip:x86/urgent] x86: add boundary check for 32bit res before expand e820 resource to alignment
Date: Fri, 03 Jul 2009 00:01:08 -0700 [thread overview]
Message-ID: <4A4DACB4.5040207@kernel.org> (raw)
In-Reply-To: <20090703065632.GB32687@elte.hu>
Ingo Molnar wrote:
> * tip-bot for Yinghai Lu <yinghai@kernel.org> wrote:
>
>> Commit-ID: 4b05c392955458757790414bd7ba4280e1a515b0
>> Gitweb: http://git.kernel.org/tip/4b05c392955458757790414bd7ba4280e1a515b0
>> Author: Yinghai Lu <yinghai@kernel.org>
>> AuthorDate: Thu, 2 Jul 2009 11:10:56 -0700
>> Committer: H. Peter Anvin <hpa@zytor.com>
>> CommitDate: Thu, 2 Jul 2009 11:53:15 -0700
>>
>> x86: add boundary check for 32bit res before expand e820 resource to alignment
>>
>> Avoid incorrect address arithmetic, ascerbated by previous improper
>> definition of the round_up() macro.
>>
>> fix hang with HIGHMEM_64G and 32bit resource.
>> according to hpa and Linus, use (resource_size_t)-1 to fend off big ranges.
>> analyized by hpa
>>
>> Alex found:
>> for i386 machine the specjbb2005 still can not run with hugepage
>>
>> -v2: it also fix hugepage problem
>>
>> Reported-and-tested-by: Mikael Pettersson <mikpe@it.uu.se>
>> Reported-and-Tested-by: Alex Shi <alex.shi@intel.com>
>> Signed-off-by: Yinghai Lu <yinghai@kernel.org>
>> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
>
> Peter, Yinghi - i zapped this and the other e820 patch from
> x86/urgent as Linus already applied slightly different versions
> upstream:
>
> 7c5371c: x86: add boundary check for 32bit res before expand e820 resource to alignment
the same, only comments is different.
> 4364467: x86: fix power-of-2 round_up/round_down macros
more safe.
do we need to move it include/linux/kernel.h ?
YH
prev parent reply other threads:[~2009-07-03 7:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <tip-4b05c392955458757790414bd7ba4280e1a515b0@git.kernel.org>
2009-07-03 6:56 ` [tip:x86/urgent] x86: add boundary check for 32bit res before expand e820 resource to alignment Ingo Molnar
2009-07-03 7:01 ` Yinghai Lu [this message]
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