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Re: [Xen-devel] PV drivers for HVM (PAE) guests
| To: | Ky Srinivasan <ksrinivasan@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] PV drivers for HVM (PAE) guests |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Thu, 19 Oct 2006 15:12:53 +0100 |
| Delivery-date: | Thu, 19 Oct 2006 07:13:28 -0700 |
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| Thread-topic: | [Xen-devel] PV drivers for HVM (PAE) guests |
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On 19/10/06 15:06, "Ky Srinivasan" <ksrinivasan@xxxxxxxxxx> wrote: > We have a build issue when building for PAE guests - the kernel symbol > __supported_pte_mask is not exported on any of the kernels of interest (2.6.5, > 2.6.9, 2.6.16..) and is used in the function: pfn_pte_ma (maddr.h) . In this > scenario, this function is used only by the front-end drivers that are running > within the unmodified guests. Would it make sense to have an implementation > of the function pfn_pte_ma() only for consumption by the PV front-end driver > modules that does not depend on the __supported_pte_mask variable. Sounds like the only option. I suggest a module-private version of the pte_mask which defaults to only a limited subset of PTE flags. Optionally you could add in _PAGE_NX if CPUID/EFER allows it. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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