 Home |
Products |
Support |
Community |
News |
xen-devel
[Xen-devel] Re: RFC: Using grant table to give iomem permission
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] Re: RFC: Using grant table to give iomem permission |
| From: | "Lamia M. Youseff" <lyouseff@xxxxxxxxxxx> |
| Date: | Fri, 18 May 2007 12:11:53 -0700 |
| Delivery-date: | Fri, 18 May 2007 12:10:35 -0700 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxx |
| In-reply-to: | <E1Hp33J-0006a6-QF@host-192-168-0-1-bcn-london> |
| 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/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| References: | <E1Hp33J-0006a6-QF@host-192-168-0-1-bcn-london> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| User-agent: | Thunderbird 1.5.0.10 (X11/20070221) |
When the hypervisor tries to do this grant in xen/common/grant_table.c it (i) notices that it is an iomem_map rather than device_map or host_map; (ii) it is from dom0; and (iii) it is not a RAM page. It then attempts to call iomem_permit_access(). Hi Karen, Thanks for the patch, I find it useful... but I am wondering why you need to check it is from a dom0 ... I maybe not getting the reason, but iomem_map should be available for page sharing among all domains, shouldn't it ? Thank you, -- Lamia Youseff _______________________________________________ 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] mach_mpspec.h, mach_apicdef.h & xenbus_mkdir, J. Aaron Pendergrass |
|---|---|
| Next by Date: | [Xen-devel] Performance Counter Virtualization in Xen, Bhatia, Nikhil |
| Previous by Thread: | [Xen-devel] mach_mpspec.h, mach_apicdef.h & xenbus_mkdir, J. Aaron Pendergrass |
| Next by Thread: | [Xen-devel] Re: RFC: Using grant table to give iomem permission, Kieran Mansley |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
