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author | James Morris <jmorris@namei.org> | 2008-12-04 06:16:36 (GMT) |
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committer | James Morris <jmorris@namei.org> | 2008-12-04 06:16:36 (GMT) |
commit | ec98ce480ada787f2cfbd696980ff3564415505b (patch) | |
tree | 1a4d644b38f9f1e4b4e086fde0b195df4a92cf84 /arch/powerpc/mm/40x_mmu.c | |
parent | 3496f92beb9aa99ef21fccc154a36c7698e9c538 (diff) | |
parent | feaf3848a813a106f163013af6fcf6c4bfec92d9 (diff) | |
download | linux-ec98ce480ada787f2cfbd696980ff3564415505b.tar.xz |
Merge branch 'master' into next
Conflicts:
fs/nfsd/nfs4recover.c
Manually fixed above to use new creds API functions, e.g.
nfs4_save_creds().
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'arch/powerpc/mm/40x_mmu.c')
-rw-r--r-- | arch/powerpc/mm/40x_mmu.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c index cecbbc7..29954dc 100644 --- a/arch/powerpc/mm/40x_mmu.c +++ b/arch/powerpc/mm/40x_mmu.c @@ -93,7 +93,7 @@ void __init MMU_init_hw(void) unsigned long __init mmu_mapin_ram(void) { - unsigned long v, s; + unsigned long v, s, mapped; phys_addr_t p; v = KERNELBASE; @@ -130,5 +130,17 @@ unsigned long __init mmu_mapin_ram(void) s -= LARGE_PAGE_SIZE_4M; } - return total_lowmem - s; + mapped = total_lowmem - s; + + /* If the size of RAM is not an exact power of two, we may not + * have covered RAM in its entirety with 16 and 4 MiB + * pages. Consequently, restrict the top end of RAM currently + * allocable so that calls to the LMB to allocate PTEs for "tail" + * coverage with normal-sized pages (or other reasons) do not + * attempt to allocate outside the allowed range. + */ + + __initial_memory_limit_addr = memstart_addr + mapped; + + return mapped; } |