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Re: [Xen-devel] porting xen-detect ASM code into a shared library
| To: | Guillaume Rousse <Guillaume.Rousse@xxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] porting xen-detect ASM code into a shared library |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 10 Jul 2008 11:57:57 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Thu, 10 Jul 2008 03:58:41 -0700 |
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| Thread-topic: | [Xen-devel] porting xen-detect ASM code into a shared library |
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On 10/7/08 11:54, "Guillaume Rousse" <Guillaume.Rousse@xxxxxxxx> wrote: > I turned it into the current way because I don't need the check in pv > context, but I guess it might be simplified. Actually then you can take the xc_cpuid_x86 function pretty much unmodified (of course regs[0-3] become eax-edx, and input[1] is not needed). The other stuff in the asm code is to ensure that cpuid traps into the hypervisor when run in a pv guest. If you don't need to run in a pv guest then you don't need that extra code. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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