diff options
| author | Santosh Shilimkar <[email protected]> | 2014-01-21 15:50:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2014-01-21 16:19:46 -0800 |
| commit | 5b6e529521d35e1bcaa0fe43456d1bbb335cae5d (patch) | |
| tree | 05b32031c52c434ff2645bcf918860e1d14705fe | |
| parent | 4d4048be8a93769350efa31d2482a038b7de73d0 (diff) | |
x86: memblock: set current limit to max low memory address
The memblock current limit value is used to limit early boot memory
allocations below max low memory address by default, as the kernel can
access only to the low memory.
Hence, set memblock current limit value to the max mapped low memory
address instead of max mapped memory address.
Signed-off-by: Santosh Shilimkar <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Grygorii Strashko <[email protected]>
Cc: Yinghai Lu <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Paul Walmsley <[email protected]>
Cc: Pavel Machek <[email protected]>
Cc: Russell King <[email protected]>
Cc: Tony Lindgren <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | arch/x86/include/asm/page_types.h | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/setup.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h index f97fbe3abb67..2f59cce3b38a 100644 --- a/arch/x86/include/asm/page_types.h +++ b/arch/x86/include/asm/page_types.h @@ -51,9 +51,9 @@ extern int devmem_is_allowed(unsigned long pagenr); extern unsigned long max_low_pfn_mapped; extern unsigned long max_pfn_mapped; -static inline phys_addr_t get_max_mapped(void) +static inline phys_addr_t get_max_low_mapped(void) { - return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT; + return (phys_addr_t)max_low_pfn_mapped << PAGE_SHIFT; } bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn); diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 06853e670354..c9675594d7ca 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1119,7 +1119,7 @@ void __init setup_arch(char **cmdline_p) setup_real_mode(); - memblock_set_current_limit(get_max_mapped()); + memblock_set_current_limit(get_max_low_mapped()); dma_contiguous_reserve(0); /* |