[Xen-devel] Re: [PATCH] fix linux ioremap() of domain local memory

[Avi Kivity <avi@xxxxxxxxxxxx>]

Avi Kivity wrote:
> is_local_lowmem() treats its physical address input as a machine 
> address; this causes agpgart to fail while calling ioremap_nocache().
> X still does not load on my Athlon 64 / Via S3 Unichrome, so perhaps 
> best not to apply just yet.
This is bogus: ioremap_nocache() does accept machine addresses, but 
x86_64 agpgart passes it a physical address.  This is because x86_64 
lacks the address translation bits:
--- /dev/null   2006-06-25 13:08:55.714359750 +0300
+++ include/asm-x86_64/mach-xen/asm/agp.h       2006-06-25 13:15:12.000000000 
+0300
@@ -0,0 +1 @@
+#include "../../../asm-i386/mach-xen/asm/agp.h"


Still locks up hard when starting up X, but now the gart table is 
remapped correctly at least.
--
error compiling committee.c: too many arguments to function


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