From mboxrd@z Thu Jan 1 00:00:00 1970 From: Akio Takebe Subject: Re: guest attempted write to read-only memory page. Date: Thu, 25 Dec 2008 17:36:07 +0900 Message-ID: <495345F7.6080905@jp.fujitsu.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: "Tian, Kevin" , "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org Keir Fraser wrote: > On 25/12/2008 01:54, "Akio Takebe" wrote: >=20 >>> I make a quick test, that warning disappears after moving disable >>> action post rom_scan. But I haven't found the place triggering such >>> write violation, as in previous revision write access is also disable= d >>> before rom_scan. It could come from recent bochs update on >>> expansion rom part by 18931. >> Sorry for my late response. >> That's a bug of mine. >> >> Some option ROMs would do write accesses. >> So rombios need to enable write acess before rom_scan. >> I'll post a patch to fix. >=20 > This behaviour existed before your upgrade, and it's not a bug. I fixed= by > removing the warning message. >=20 But shadow memory should enable write accesses during INIT and BCV. It's in BBS spec. Best Regards, Akio=E3=80=80Takebe