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xen: introduce xen_remap, use it instead of ioremap

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ioremap can't be used to map ring pages on ARM because it uses device
memory caching attributes (MT_DEVICE*).

Introduce a Xen specific abstraction to map ring pages, called
xen_remap, that is defined as ioremap on x86 (no behavioral changes).
On ARM it explicitly calls __arm_ioremap with the right caching
attributes: MT_MEMORY.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Stefano Stabellini
2013-02-19 13:59:19 +00:00
committed by Konrad Rzeszutek Wilk
parent e7e44e4448
commit 3216dceb31
5 changed files with 9 additions and 3 deletions
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4
arch/arm/include/asm/xen/page.h
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@@ -1,6 +1,7 @@
#ifndef _ASM_ARM_XEN_PAGE_H
#define _ASM_ARM_XEN_PAGE_H
#include <asm/mach/map.h>
#include <asm/page.h>
#include <asm/pgtable.h>
@@ -86,4 +87,7 @@ static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn)
{
return __set_phys_to_machine(pfn, mfn);
}
#define xen_remap(cookie, size) __arm_ioremap((cookie), (size), MT_MEMORY);
#endif /* _ASM_ARM_XEN_PAGE_H */