| To: | "Jan Beulich" <jbeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Xen Kernel (3.0.2) breaks b44 module |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | 2006年5月12日 10:03:55 +0100 |
| Cc: | xen@xxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | 2006年5月12日 02:04:18 -0700 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxx |
| In-reply-to: | <44646A15.76E4.0078.0@xxxxxxxxxx> |
| 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: | <00a801c67599$bfc2ab50$fe02420a@BDR529 > <44646A15.76E4.0078.0@xxxxxxxxxx> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
On 12 May 2006, at 09:57, Jan Beulich wrote:
This ought to be attributed to the fact that B44 supports only 30-bit DMA addresses (and does special checking), but XenLinux doesn't have a distinct DMA zone restricted to 24-bit addresses, and both dma_alloc_coherent() and swiotlb are restricting physical addresses to 31 bits only (at least the former could certainly look at the device's DMA mask andIf dma_alloc_coherent isn't doing that then it should be patched to do so. Even though it won't help right now (since Xen will reject any requests more restricted than 31 bits) it will be needed when Xen is fixed to support basket-case hardware.use that value rather than hard-coding 31).
-- 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: | Re: [Xen-devel] Xen Kernel (3.0.2) breaks b44 module , Keir Fraser |
|---|---|
| Next by Date: | Re: [Xen-devel] Xen Kernel (3.0.2) breaks b44 module , Jan Beulich |
| Previous by Thread: | Re: [Xen-devel] Xen Kernel (3.0.2) breaks b44 module , Jan Beulich |
| Next by Thread: | Re: [Xen-devel] Xen Kernel (3.0.2) breaks b44 module , Jan Beulich |
| Indexes: | [Date] [Thread] [Top] [All Lists] |