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| author | Max Filippov <jcmvbkbc@gmail.com> | 2014-01-31 05:38:21 +0400 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2014-02-21 21:33:39 +0400 |
| commit | e9d6dca51823b94e1ca28cb5e9180701d4375d61 (patch) | |
| tree | 03e96cb5a906e63da33dfcf748d1861814afb5c7 /arch | |
| parent | 6d0abeca3242a88cab8232e4acd7e2bf088f3bc2 (diff) | |
| download | linux-e9d6dca51823b94e1ca28cb5e9180701d4375d61.tar.gz linux-e9d6dca51823b94e1ca28cb5e9180701d4375d61.tar.bz2 linux-e9d6dca51823b94e1ca28cb5e9180701d4375d61.zip | |
xtensa: don't pass high memory to bootmem allocator
This fixes panic when booting on machine with more than 128M memory
passed from the bootloader.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/xtensa/mm/init.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 479d7537a32a..aff108df92d3 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -90,7 +90,7 @@ int __init mem_reserve(unsigned long start, unsigned long end, int must_exist) /* - * Initialize the bootmem system and give it all the memory we have available. + * Initialize the bootmem system and give it all low memory we have available. */ void __init bootmem_init(void) @@ -142,9 +142,14 @@ void __init bootmem_init(void) /* Add all remaining memory pieces into the bootmem map */ - for (i=0; i<sysmem.nr_banks; i++) - free_bootmem(sysmem.bank[i].start, - sysmem.bank[i].end - sysmem.bank[i].start); + for (i = 0; i < sysmem.nr_banks; i++) { + if (sysmem.bank[i].start >> PAGE_SHIFT < max_low_pfn) { + unsigned long end = min(max_low_pfn << PAGE_SHIFT, + sysmem.bank[i].end); + free_bootmem(sysmem.bank[i].start, + end - sysmem.bank[i].start); + } + } } |