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Re: [Xen-devel] [PATCH 4/5] xen: fix handling framebuffer located above 4GB



On Mon, May 06, 2019 at 05:15:19PM +0200, Juergen Gross wrote:
> On 06/05/2019 16:50, Marek Marczykowski-Górecki wrote:
> > diff --git a/xen/include/public/xen.h b/xen/include/public/xen.h
> > index ccdffc0..b0f0f7e 100644
> > --- a/xen/include/public/xen.h
> > +++ b/xen/include/public/xen.h
> > @@ -923,6 +923,8 @@ typedef struct dom0_vga_console_info {
> >              /* Mode attributes (offset 0x0, VESA command 0x4f01). */
> >              uint16_t mode_attrs;
> >  #endif
> > +            /* high 32 bits of lfb_base */
> > +            uint32_t ext_lfb_base;
> 
> You will need to put this addition into an:
> 
> #if __XEN_INTERFACE_VERSION__ >= 0x00040d00
> ...
> #endif
> 
> section (only available from Xen 4.13 onwards).

Why exactly? I don't see this structure used in any hypercall argument.
The only externally accessible place is start_info structure, where it
has explicit struct size already.

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?

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