Messages in this thread | | | Subject | Re: [PATCH v4 04/16] powerpc/mm/32s: use generic mmu_mapin_ram() for all blocks. | From | Christophe Leroy <> | Date | Thu, 21 Feb 2019 15:38:34 +0100 |
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Le 21/02/2019 à 14:51, Michael Ellerman a écrit : > Christophe Leroy <christophe.leroy@c-s.fr> writes: > >> Now that mmu_mapin_ram() is able to handle other blocks >> than the one starting at 0, the WII can use it for all >> its blocks. >> >> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> >> --- >> arch/powerpc/mm/pgtable_32.c | 27 +++++++++------------------ >> 1 file changed, 9 insertions(+), 18 deletions(-) >> >> diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c >> index b4858818523f..2bf9bf8867d4 100644 >> --- a/arch/powerpc/mm/pgtable_32.c >> +++ b/arch/powerpc/mm/pgtable_32.c >> @@ -254,26 +254,17 @@ static void __init __mapin_ram_chunk(unsigned long offset, unsigned long top) >> >> void __init mapin_ram(void) >> { >> - unsigned long s, top; >> - >> -#ifndef CONFIG_WII >> - top = total_lowmem; >> - s = mmu_mapin_ram(0, top); >> - __mapin_ram_chunk(s, top); >> -#else >> - if (!wii_hole_size) { >> - s = mmu_mapin_ram(0, total_lowmem); >> - __mapin_ram_chunk(s, total_lowmem); >> - } else { >> - top = wii_hole_start; >> - s = mmu_mapin_ram(0, top); >> - __mapin_ram_chunk(s, top); >> + struct memblock_region *reg; >> + >> + for_each_memblock(memory, reg) { >> + unsigned long base = reg->base; >> + unsigned long top = min(base + reg->size, (unsigned long)total_lowmem); > > This gives me: > > In file included from ../arch/powerpc/mm/pgtable_32.c:22: > ../arch/powerpc/mm/pgtable_32.c: In function ‘mapin_ram’: > ../include/linux/kernel.h:846:29: error: comparison of distinct pointer types lacks a cast [-Werror] > (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) > ^~ > ../include/linux/kernel.h:860:4: note: in expansion of macro ‘__typecheck’ > (__typecheck(x, y) && __no_side_effects(x, y)) > ^~~~~~~~~~~ > ../include/linux/kernel.h:870:24: note: in expansion of macro ‘__safe_cmp’ > __builtin_choose_expr(__safe_cmp(x, y), \ > ^~~~~~~~~~ > ../include/linux/kernel.h:879:19: note: in expansion of macro ‘__careful_cmp’ > #define min(x, y) __careful_cmp(x, y, <) > ^~~~~~~~~~~~~ > ../arch/powerpc/mm/pgtable_32.c:261:23: note: in expansion of macro ‘min’ > unsigned long top = min(base + reg->size, (unsigned long)total_lowmem); > ^~~ > cc1: all warnings being treated as errors > ../scripts/Makefile.build:276: recipe for target 'arch/powerpc/mm/pgtable_32.o' failed > > > For 44x/bamboo_defconfig. >
Argh ! I had the same kind of warning this morning with pmac32_defconfig, that's the reason why I added the cast to unsigned long.
Christophe
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