lkml.org 
[lkml]   [2017]   [Jun]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] ARM: small correction to early_ioremap support
Date
The fixmap pages need to be on the same pmd page for the current
implementation of arm early_fixmap. A build time bug check is
used to ensure that. However, the worst case fixmap range is
better represented by __end_of_fixed_addresses than by the value
__end_of_early_ioremap_region.

Fixes: 2937367b8a4b ("ARM: add support for generic early_ioremap/early_memremap")
Signed-off-by: Doug Berger <opendmb@gmail.com>
---
arch/arm/mm/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 31af3cb59a60..74c0ed5c3b08 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -392,7 +392,7 @@ void __init early_fixmap_init(void)
* The early fixmap range spans multiple pmds, for which
* we are not prepared:
*/
- BUILD_BUG_ON((__fix_to_virt(__end_of_early_ioremap_region) >> PMD_SHIFT)
+ BUILD_BUG_ON((__fix_to_virt(__end_of_fixed_addresses) >> PMD_SHIFT)
!= FIXADDR_TOP >> PMD_SHIFT);

pmd = fixmap_pmd(FIXADDR_TOP);
--
2.13.0
\
 
 \ /
  Last update: 2017-06-27 02:59    [W:0.054 / U:1.568 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site