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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-09-26 11:23:20 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-09-26 14:22:42 +0400 |
| commit | 242a112af62ea73ce507cbe76c2c944c23b6a1e3 (patch) | |
| tree | 53cd41c4037d815f7ad6ebcf151243ea9b132e5a /arch/s390 | |
| parent | 48e9a6c1f54695609b709bf674aac133794ada00 (diff) | |
| download | linux-242a112af62ea73ce507cbe76c2c944c23b6a1e3.tar.xz | |
s390/setup: correct 4-level kernel page table detection
Fix calculation to decide if a 4-level kernel page table is required.
Git commit c972cc60c23f5a63 "s390/vmalloc: have separate modules area"
added the separate module area which reduces the size of the vmalloc
area but fails to take it into account for the 3 vs 4 level page table
decision.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/setup.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 82bc113e8c1d..cdfc060dd319 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -452,8 +452,8 @@ static void __init setup_memory_end(void) #ifdef CONFIG_64BIT vmalloc_size = VMALLOC_END ?: (128UL << 30) - MODULES_LEN; tmp = (memory_end ?: max_physmem_end) / PAGE_SIZE; - tmp = tmp * (sizeof(struct page) + PAGE_SIZE) + vmalloc_size; - if (tmp <= (1UL << 42)) + tmp = tmp * (sizeof(struct page) + PAGE_SIZE); + if (tmp + vmalloc_size + MODULES_LEN <= (1UL << 42)) vmax = 1UL << 42; /* 3-level kernel page table */ else vmax = 1UL << 53; /* 4-level kernel page table */ |