From: james.morse@arm.com (James Morse)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm64: Drop generic xlate_dev_mem_{k,}ptr()
Date: Mon, 5 Sep 2016 09:43:04 +0100 [thread overview]
Message-ID: <1473064984-9494-2-git-send-email-james.morse@arm.com> (raw)
In-Reply-To: <1473064984-9494-1-git-send-email-james.morse@arm.com>
The code that provides /dev/mem uses xlate_dev_mem_{k,}ptr() to
avoid making a cachable mapping of a non-cachable area on ia64.
On arm64 we do this via phys_mem_access_prot() instead, but provide
dummy versions of xlate_dev_mem_{k,}ptr().
These are the same as those in asm-generic/io.h, which we include from
asm/io.h
Signed-off-by: James Morse <james.morse@arm.com>
---
arch/arm64/include/asm/io.h | 11 -----------
1 file changed, 11 deletions(-)
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 9b6e408cfa51..ce20741b2cb5 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -184,17 +184,6 @@ extern void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size);
#define iowrite32be(v,p) ({ __iowmb(); __raw_writel((__force __u32)cpu_to_be32(v), p); })
#define iowrite64be(v,p) ({ __iowmb(); __raw_writeq((__force __u64)cpu_to_be64(v), p); })
-/*
- * Convert a physical pointer to a virtual kernel pointer for /dev/mem
- * access
- */
-#define xlate_dev_mem_ptr(p) __va(p)
-
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
#include <asm-generic/io.h>
/*
--
2.8.0.rc3
next prev parent reply other threads:[~2016-09-05 8:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-05 8:43 [PATCH] arm64: mm: phys_mem_access_prot() reports non-kernel memory as device memory James Morse
2016-09-05 8:43 ` James Morse [this message]
2016-09-05 10:35 ` Will Deacon
2016-09-05 13:03 ` James Morse
2016-09-05 13:10 ` Ard Biesheuvel
2016-09-05 13:24 ` Will Deacon
2016-09-05 13:41 ` Ard Biesheuvel
2016-09-05 14:36 ` Leif Lindholm
2016-09-05 14:42 ` Will Deacon
2016-09-05 14:52 ` Ard Biesheuvel
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