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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/mm/book3s64/radix_pgtable.c | |
| parent | powerpc/64s: Make hash MMU support configurable (diff) | |
| download | linux-387e220a2e5e630794e1f5219ed6f11e56271c21.tar.gz linux-387e220a2e5e630794e1f5219ed6f11e56271c21.tar.bz2 linux-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/mm/book3s64/radix_pgtable.c')
| -rw-r--r-- | arch/powerpc/mm/book3s64/radix_pgtable.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c index 1f4afc37843d..3c4f0ebe5df8 100644 --- a/arch/powerpc/mm/book3s64/radix_pgtable.c +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c @@ -334,7 +334,7 @@ static void __init radix_init_pgtable(void) u64 i; /* We don't support slb for radix */ - mmu_slb_size = 0; + slb_set_size(0); /* * Create the linear mapping @@ -565,6 +565,7 @@ void __init radix__early_init_mmu(void) { unsigned long lpcr; +#ifdef CONFIG_PPC_64S_HASH_MMU #ifdef CONFIG_PPC_64K_PAGES /* PAGE_SIZE mappings */ mmu_virtual_psize = MMU_PAGE_64K; @@ -582,6 +583,7 @@ void __init radix__early_init_mmu(void) } else mmu_vmemmap_psize = mmu_virtual_psize; #endif +#endif /* * initialize page table size */ |