From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <jbeulich@novell.com>
Subject: Re: [PATCH] fix ia64 breakage with PHYSDEVOP_pirq_eoi_mfn
	(wasRe:[PATCH 2/2] linux/x86: use shared page
	indicatingthe need foran EOI notification)
Date: Wed, 10 Dec 2008 10:23:46 +0000
Message-ID: <493FA6C2.76E4.0078.0@novell.com>
References: <493F982A.76E4.0078.0@novell.com>
	<C565457A.2004E%keir.fraser@eu.citrix.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <C565457A.2004E%keir.fraser@eu.citrix.com>
Content-Disposition: inline
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Keir Fraser <keir.fraser@eu.citrix.com>, Isaku Yamahata <yamahata@valinux.co.jp>
Cc: xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

>>> Keir Fraser <keir.fraser@eu.citrix.com> 10.12.08 11:07 >>>
>On 10/12/2008 09:21, "Jan Beulich" <jbeulich@novell.com> wrote:
>
>>>>> Isaku Yamahata <yamahata@valinux.co.jp> 10.12.08 05:16 >>>
>>> Sorry I sent out the old one. Here is the corrected one.
>>> NULL check must be before its use.
>>=20
>> Not really - alloc_bootmem() etc panic for themselves unless you use =
the
>> _nopanic variants.
>> Also, alloc_bootmem() etc zero the allocated memory, so no need for
>> memset(), and the subsequent BUG_ON() can obviously go away.
>> And finally, PAGE_SIZE isn't correct, you should use the size originally=

>> used, just slightly modified:
>>=20
>> BITS_TO_LONGS(ALIGN(NR_PIRQS, PAGE_SIZE * 8))
>>=20
>> I was about to put together a patch for this myself...
>
>Can you just fix up Isaku's patch and then we'll collect a fresh sign-off
>from him too?

Yes, I'm in the process of doing this (here and for the other one) - my
suggestions actually needed some further refinement, and getting the
HIGHPTE case of the other patch to build is actually non-trivial.

Jan