RE: [Xen-ia64-devel] Paravirt_ops/hybrid directions and next steps

["Dong, Eddie" <eddie.dong@xxxxxxxxx>]

Tristan Gingold wrote:
> Hi,
> 
> just a point about call convention: I don't think switching to PAL
> static convention is a good idea as it doesn't work well with xen
> hyperprivop because of banked registers.
> 
> Tristan.

Tristan:
        This is for pv_ops interface calling convention, not hypervisor
API convention. The hypervisor wrapper will convert from pv_ops
convention to hypervisor convention. pv_ops is hypervisor neutral.

        BTW, since we use single source, dual compile to generate code
in place. Actually those pv_cpu_asm_ops won't be used frequently, most
of them are not used. So even we use this policy, it is very few place
which may use a formal pv_ops for ASM code which imply the calling
convention.  All IVT/gate table/page doesn't have this issue.

        Does this solve your concern?

Thanks, eddie 

_______________________________________________
Xen-ia64-devel mailing list
Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ia64-devel