RE: [Xen-devel] OpenIPMI on dom0

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> This may not be the best approach though, since the IPMI 
> drivers are not already patched for Xen and presumably 
> isa_memcpy_fromio() is a reasonable way to read memory in the 
> 0xf0000-0xfffff region.
> 
> Why does isa_memcpy_fromio() not produce identical results 
> for the reserved 0xf0000-0xfffff section of memory in dom0 
> and in a vanilla Linux 2.6.12.6 kernel?

Try changing ISA_IO_BASE in include/asm-xen/asm-i386/io.h to

#define __ISA_IO_base ((char __iomem *)(fix_to_virt(FIX_ISAMAP_BEGIN))

It's arguable that we'd be better off maping the bottom 1MB of machine
memory at PAGE_OFFSET rather than a fixmap as this would mean fewer
Linux changes...

Ian

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