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| author |   Nicholas Piggin <npiggin@gmail.com> | 2021-12-02 00:41:52 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-12-09 22:41:13 +1100 |
| commit | 387e220a2e5e630794e1f5219ed6f11e56271c21 (patch) | |
| tree | 85b04fbab55f104ba90c3c2e688b83fa5ab613e7 /arch/powerpc/kernel/setup_64.c | |
| parent | powerpc/64s: Make hash MMU support configurable (diff) | |
| download | linux-dev-387e220a2e5e630794e1f5219ed6f11e56271c21.tar.xz linux-dev-387e220a2e5e630794e1f5219ed6f11e56271c21.zip | |
powerpc/64s: Move hash MMU support code under CONFIG_PPC_64S_HASH_MMU
Compiling out hash support code when CONFIG_PPC_64S_HASH_MMU=n saves
128kB kernel image size (90kB text) on powernv_defconfig minus KVM,
350kB on pseries_defconfig minus KVM, 40kB on a tiny config.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Fixup defined(ARCH_HAS_MEMREMAP_COMPAT_ALIGN), which needs CONFIG.
Fix radix_enabled() use in setup_initial_memory_limit(). Add some
stubs to reduce number of ifdefs.]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211201144153.2456614-18-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 9a493796ce66..703a2e6ab08d 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -886,7 +886,7 @@ void __init setup_per_cpu_areas(void) atom_size = SZ_1M; } else if (radix_enabled()) { atom_size = PAGE_SIZE; - } else { + } else if (IS_ENABLED(CONFIG_PPC_64S_HASH_MMU)) { /* * Linear mapping is one of 4K, 1M and 16M. For 4K, no need * to group units. For larger mappings, use 1M atom which |