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Re: [Xen-devel] [PATCH] make shared_info architecture independent
| To: | "Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx>, Keir Fraser <keir@xxxxxxxxxxxxx>, "He, Qing" <qing.he@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] make shared_info architecture independent |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Fri, 01 Dec 2006 09:14:40 +0000 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Fri, 01 Dec 2006 01:14:49 -0800 |
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| Thread-topic: | [Xen-devel] [PATCH] make shared_info architecture independent |
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On 1/12/06 08:17, "Yang, Xiaowei" <xiaowei.yang@xxxxxxxxx> wrote: > I don't quite understand what "break ABI compatibility" mean? Doesn't it > mean old domX kernel can't run with new HV or vice versa? Since we only > made a small change to evtchn structure inside and exported APIs is > untouched, we think it won't affect others. Yes, that's precisely what ABI compatibility means. Your patch breaks it and so is unacceptable. Luckily Jan Beulich has done the hard work of supporting the current 32-bit ABI on a 64-bit hypervisor. He did this primarily to support paravirtual PAE guests on 64-bit hypervisor, but I'm sure the work can be (fairly) easily extended to support 32-bit PV-on-HVM drivers on 64-bit hypervisor. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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