Re: [Xen-devel] PATCH: console.c: use ioremap instead of __va to map video memory

[Muli Ben-Yehuda <mulix@xxxxxxxxx>]

On Fri, Apr 14, 2006 at 01:37:22PM +0100, Tristan Gingold wrote:
> Hi,
> 
> on ia64 you need to map video are as uncached memory.
> With this patch the vga console is now working on ia64.
> 
> Tested on ia64 only.

It should work fine on x86 (though I haven't tested!) since ioremap is
just defined to __va().

The comment in asm-x86/io.h says "we don't need a real ioremap on
Xen/x86", but I think we do need it for the IOMMU work on x86-64,
since the hypervisor will need to map the IOMMU's internal register
area for things like cache flushing. Is there a fundamental objection
to a real ioremap for x86?

Cheers,
Muli
-- 
Muli Ben-Yehuda
http://www.mulix.org | http://mulix.livejournal.com/


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