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Re: [Xen-devel] [PATCH] Cleanup/fix virt_to_maddr
| To: | Christoph Egger <Christoph.Egger@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] Cleanup/fix virt_to_maddr |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Wed, 24 Jan 2007 11:06:00 +0000 |
| Delivery-date: | Wed, 24 Jan 2007 03:05:46 -0800 |
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| In-reply-to: | <200701241201.32215.Christoph.Egger@xxxxxxx> |
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| Thread-index: | Acc/p6E0343fWKuaEduptAAX8io7RQ== |
| Thread-topic: | [Xen-devel] [PATCH] Cleanup/fix virt_to_maddr |
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On 24/1/07 11:01, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote: >> They're only used on Xen heap virtual addresses whose physical addresses >> are always below 64MB. So there should be no issues in returning a ulong. > > Oh, I see. So it's absolutely not used for domains (which I assumed)? No, all it does is a simple arithmetic transformation (subtracting PAGE_OFFSET) which is only valid for non-guest pages on x86_32. It can be used for any page on x86_64, but there we have paddr_t==ulong. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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