Re: [Xen-devel] changes for illumos in public headers

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2013-12-12 at 15:15 +0400, Igor Kozhukhov wrote:
> On Dec 12, 2013, at 3:02 PM, Andrew Cooper wrote:
> 
> > On 12/12/2013 09:15, Igor Kozhukhov wrote:
> >> Hello All,
> >> 
> >> i'm working on port xen-4.2 to DilOS - illumos based platform.
> >> 
> >> I have a questions about changes in public headers.
> >> 
> >> for build i need changes:
> >> 
> >> diff -r 9640d9c4b223 xen/include/public/arch-x86/xen-x86_32.h
> >> --- a/xen/include/public/arch-x86/xen-x86_32.h  Tue Dec 10 16:21:57 2013 
> >> +0100
> >> +++ b/xen/include/public/arch-x86/xen-x86_32.h  Thu Dec 12 13:07:50 2013 
> >> +0400
> >> @@ -36,6 +36,19 @@
> >>  * Clobbered: Argument registers (e.g., 2-arg hypercall clobbers %ebx,%ecx)
> >>  */
> >> 
> >> +#if defined(__sun)
> >> +/*
> >> + * Direct hypercall interface:
> >> + * As above, except the entry sequence to the hypervisor is:
> >> + *  mov $hypercall-number*32,%eax ; int $0x82
> > 
> > Have you done substantial hacking to the Xen entry points? If not, this
> > comment appears wrong.
> > 
> > Furthermore, why are you not using a hypercall page?
> 
> At this moment i'm using xen-3.4 implementation in illumos based on Sun Xen 
> ports.
> I'm learning how to port xen-4.2.

The hypercall page support has been present since at least Xen 3.0.4,
actually before, but I can't be bothered to search further back than
d87addffb118.

Ian.


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