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Re: [Xen-devel] Re: [Qemu-devel] Recursion in cpu_physical_memory_rw
| To: | Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Re: [Qemu-devel] Recursion in cpu_physical_memory_rw |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Wed, 15 Nov 2006 11:25:20 +0000 |
| Cc: | Xen Development Mailing List <xen-devel@xxxxxxxxxxxxxxxxxxx>, Paul Brook <paul@xxxxxxxxxxxxxxxx>, qemu-devel@xxxxxxxxxx |
| Delivery-date: | Wed, 15 Nov 2006 03:25:42 -0800 |
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| Thread-topic: | [Xen-devel] Re: [Qemu-devel] Recursion in cpu_physical_memory_rw |
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On 15/11/06 11:12, "Herbert Xu" <herbert@xxxxxxxxxxxxxxxxxxx> wrote: >> Could we add a recursion counter to the memory-access functions, and bail if >> it reaches some limit? > > Yes that would work too. However, chips such as rtl8139 should never > do MMIO in this case (the real hardware would never allow that to occur) > so we should do that accordingly. We'd take a patch for Xen to do it the 'proper way' with an extended memory-access API if that is also acceptable for the upstream Qemu maintainers. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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