need to explain the code

need to explain the code

[James (song wei)]

I see the XEN code about "#define HYPERVISOR_COMPAT_VIRT_START(d)
((d)->arch.hv_compat_vstart)" in xen/include/asm-x86/config.h and be puzzled
that where did the code allocate a value to hv_compat_vstart?
Someone could tell me. thanks in advance!

-James (song wei)
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Re: need to explain the code

[Keir Fraser]

It gets assigned tro via that macro. I.e.,
HYPERVISOR_COMPAT_VIRT_START(d) = ...
Which is a bit odd. :-) You can grep for that, and find it in
arch/x86/domain.c and arch/x86/domain_build.c.

 -- Keir

On 05/11/2009 06:25, "James (song wei)" <jsong@novell.com> wrote:

> 
> I see the XEN code about "#define HYPERVISOR_COMPAT_VIRT_START(d)
> ((d)->arch.hv_compat_vstart)" in xen/include/asm-x86/config.h and be puzzled
> that where did the code allocate a value to hv_compat_vstart?
> Someone could tell me. thanks in advance!
> 
> -James (song wei)

Re: need to explain the code

[James Song]

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Thanks Keir, It's real a bit odd :-)
 
- James (song wei)
>>> Keir Fraser <keir.fraser@eu.citrix.com> 2009-11-5 15:58 >>>
It gets assigned tro via that macro. I.e.,
HYPERVISOR_COMPAT_VIRT_START(d) = ...
Which is a bit odd. :-) You can grep for that, and find it in
arch/x86/domain.c and arch/x86/domain_build.c.

-- Keir

On 05/11/2009 06:25, "James (song wei)" <jsong@novell.com> wrote:

> 
> I see the XEN code about "#define HYPERVISOR_COMPAT_VIRT_START(d)
> ((d)->arch.hv_compat_vstart)" in xen/include/asm-x86/config.h and be puzzled
> that where did the code allocate a value to hv_compat_vstart?
> Someone could tell me. thanks in advance!
> 
> -James (song wei)



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