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| author | David S. Miller <davem@davemloft.net> | 2014-09-28 08:30:57 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-10-06 03:53:40 +0400 |
| commit | d195b71bad4347d2df51072a537f922546a904f1 (patch) | |
| tree | 362c818469223f5ff4eb7476b485f6b55afb4cce /arch/sparc/kernel | |
| parent | ee6a9333fa58e11577c1b531b8e0f5ffc0fd6f50 (diff) | |
| download | linux-d195b71bad4347d2df51072a537f922546a904f1.tar.xz | |
sparc64: Kill unnecessary tables and increase MAX_BANKS.
swapper_low_pmd_dir and swapper_pud_dir are actually completely
useless and unnecessary.
We just need swapper_pg_dir[]. Naturally the other page table chunks
will be allocated on an as-needed basis. Since the kernel actually
accesses these tables in the PAGE_OFFSET view, there is not even a TLB
locality advantage of placing them in the kernel image.
Use the hard coded vmlinux.ld.S slot for swapper_pg_dir which is
naturally page aligned.
Increase MAX_BANKS to 1024 in order to handle heavily fragmented
virtual guests.
Even with this MAX_BANKS increase, the kernel is 20K+ smaller.
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Bob Picco <bob.picco@oracle.com>
Diffstat (limited to 'arch/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/vmlinux.lds.S | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S index 0bacceb19150..09243057cb0b 100644 --- a/arch/sparc/kernel/vmlinux.lds.S +++ b/arch/sparc/kernel/vmlinux.lds.S @@ -35,8 +35,9 @@ jiffies = jiffies_64; SECTIONS { - /* swapper_low_pmd_dir is sparc64 only */ - swapper_low_pmd_dir = 0x0000000000402000; +#ifdef CONFIG_SPARC64 + swapper_pg_dir = 0x0000000000402000; +#endif . = INITIAL_ADDRESS; .text TEXTSTART : { |