linux-kernel - [PATCH RFC 5/6] arm64/xen: implement xen

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Date:	Thu, 30 May 2013 17:18:32 +0100
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	<linux-arm-kernel@...ts.infradead.org>
CC:	<linux-kernel@...r.kernel.org>, <xen-devel@...ts.xensource.com>,
	<Stefano.Stabellini@...citrix.com>, <will.deacon@....com>,
	<catalin.marinas@....com>, <Ian.Campbell@...rix.com>,
	<konrad.wilk@...cle.com>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>
Subject: [PATCH RFC 5/6] arm64/xen: implement xen_remap on arm64

Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
---
 arch/arm/include/asm/xen/page.h |    4 ++++
 arch/arm64/include/asm/io.h     |    1 +
 2 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/arm/include/asm/xen/page.h b/arch/arm/include/asm/xen/page.h
index cb2fa15..d995ece 100644
--- a/arch/arm/include/asm/xen/page.h
+++ b/arch/arm/include/asm/xen/page.h
@@ -90,6 +90,10 @@ static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn)
 	return __set_phys_to_machine(pfn, mfn);
 }
 
+#ifdef CONFIG_ARM64
+#define xen_remap(cookie, size) __ioremap((cookie), (size), __pgprot(PROT_NORMAL))
+#else
 #define xen_remap(cookie, size) __arm_ioremap((cookie), (size), MT_MEMORY);
+#endif
 
 #endif /* _ASM_ARM_XEN_PAGE_H */
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 2e12258..0e9c9ac 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -228,6 +228,7 @@ extern void __iounmap(volatile void __iomem *addr);
 #define PROT_DEFAULT		(PTE_TYPE_PAGE | PTE_AF | PTE_DIRTY)
 #define PROT_DEVICE_nGnRE	(PROT_DEFAULT | PTE_PXN | PTE_UXN | PTE_ATTRINDX(MT_DEVICE_nGnRE))
 #define PROT_NORMAL_NC		(PROT_DEFAULT | PTE_ATTRINDX(MT_NORMAL_NC))
+#define PROT_NORMAL		(PROT_DEFAULT | PTE_ATTRINDX(MT_NORMAL))
 
 #define ioremap(addr, size)		__ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRE))
 #define ioremap_nocache(addr, size)	__ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRE))
-- 
1.7.2.5

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