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| author |   Sergey Dyasly <dserrg@gmail.com> | 2015-09-09 16:27:18 +0100 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2015-09-22 08:13:57 +0100 |
| commit | 803e3dbcb4cf80c898faccf01875f6ff6e5e76fd (patch) | |
| tree | 272b9259fcf0d8be8049ce380e62b5b2785e7c4b /arch/arm/include/asm/memory.h | |
| parent | ARM: 8423/1: add const qualifier to smp_operations member in structures (diff) | |
| download | linux-dev-803e3dbcb4cf80c898faccf01875f6ff6e5e76fd.tar.xz linux-dev-803e3dbcb4cf80c898faccf01875f6ff6e5e76fd.zip | |
ARM: 8430/1: use default ioremap alignment for SMP or LPAE
16MB alignment for ioremap mappings was added by commit a069c896d0d6 ("[ARM]
3705/1: add supersection support to ioremap()") in order to support supersection
mappings. But __arm_ioremap_pfn_caller uses section and supersection mappings
only in !SMP && !LPAE case. There is no need for such big alignment if either
SMP or LPAE is enabled.
After this change, ioremap will use default maximum alignment of 128 pages.
Link: https://lkml.kernel.org/g/1419328813-2211-1-git-send-email-d.safonov@partner.samsung.com
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: James Bottomley <JBottomley@parallels.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Arnd Bergmann <arnd.bergmann@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dmitry Safonov <d.safonov@partner.samsung.com>
Signed-off-by: Sergey Dyasly <s.dyasly@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/memory.h')
| -rw-r--r-- | arch/arm/include/asm/memory.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h index 98d58bb04ac5..c79b57bf71c4 100644 --- a/arch/arm/include/asm/memory.h +++ b/arch/arm/include/asm/memory.h @@ -76,10 +76,12 @@ */ #define XIP_VIRT_ADDR(physaddr) (MODULES_VADDR + ((physaddr) & 0x000fffff)) +#if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE) /* * Allow 16MB-aligned ioremap pages */ #define IOREMAP_MAX_ORDER 24 +#endif #else /* CONFIG_MMU */ |