 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] guest attempted write to read-only memory page.
| To: | "Tian, Kevin" <kevin.tian@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] guest attempted write to read-only memory page. |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Mon, 22 Dec 2008 15:11:27 +0000 |
| Cc: | 'Akio Takebe' <takebe_akio@xxxxxxxxxxxxxx> |
| Delivery-date: | Mon, 22 Dec 2008 07:11:32 -0800 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <0A882F4D99BBF6449D58E61AAFD7EDD603BB49D0@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AclkHdhNymC5crU+TeGYz4yjUsNejgAAtLZCAAVBrFAAAHy2QAAA4MYTAAE945AAAdwMjA== |
| Thread-topic: | [Xen-devel] guest attempted write to read-only memory page. |
| User-agent: | Microsoft-Entourage/12.14.0.081024 |
On 22/12/2008 14:21, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote: >> Yes, I can repro the warnings. They are due to the vm86 acceleration >> changes. >> > > I saw you removed the warning in latest tree, but sorry that I'm still > a bit confused about logic here. Could you help clarify the underlying > story to me? :-) Why is such write attempt legitimate? Is the emulation > a dummy nop or actually emulated? The write is thrown away, and the instruction is skipped. Etherboot can handle these write attempts failing (obviously, since it could really be executed out of ROM). It attempts them just to set up some version info strings, I think -- nothing at all important. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | [Xen-devel] Re: XenParavirtOps wiki page updates, Ferenc Wagner |
|---|---|
| Next by Date: | RE: [Xen-devel] xenbus message id's, Ian Jackson |
| Previous by Thread: | RE: [Xen-devel] guest attempted write to read-only memory page., Tian, Kevin |
| Next by Thread: | RE: [Xen-devel] guest attempted write to read-only memory page., Tian, Kevin |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
