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| author | Yinghai Lu <yinghai@kernel.org> | 2014-01-27 17:06:50 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-27 21:02:38 -0800 |
| commit | 4ce7a8697cb795fda6bdf082c14743b4bcd551c3 (patch) | |
| tree | 04c7c47717530b28602c7243d7efe28277c7908a /arch | |
| parent | ad6492b80f60a2139fa9bf8fd79b182fe5e3647c (diff) | |
| download | kernel-common-4ce7a8697cb795fda6bdf082c14743b4bcd551c3.tar.gz kernel-common-4ce7a8697cb795fda6bdf082c14743b4bcd551c3.tar.bz2 kernel-common-4ce7a8697cb795fda6bdf082c14743b4bcd551c3.zip | |
x86: revert wrong memblock current limit setting
Dave reported big numa system booting is broken.
It turns out that commit 5b6e529521d3 ("x86: memblock: set current limit
to max low memory address") sets the limit to low wrongly.
max_low_pfn_mapped is different from max_pfn_mapped.
max_low_pfn_mapped is always under 4G.
That will memblock_alloc_nid all go under 4G.
Revert 5b6e529521d3 to fix a no-boot regression which was triggered by
457ff1de2d24 ("lib/swiotlb.c: use memblock apis for early memory
allocations").
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reported-by: Dave Hansen <dave.hansen@intel.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -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 2f59cce3b38a..f97fbe3abb67 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_low_mapped(void) +static inline phys_addr_t get_max_mapped(void) { - return (phys_addr_t)max_low_pfn_mapped << PAGE_SHIFT; + return (phys_addr_t)max_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 c9675594d7ca..06853e670354 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_low_mapped()); + memblock_set_current_limit(get_max_mapped()); dma_contiguous_reserve(0); /* |