Le 25/11/2021 à 17:35, Christophe Leroy a écrit :
Le 25/11/2021 à 13:50, Nicholas Piggin a écrit :
Now that there's a platform that can make good use of it, here's
a series that can prevent the hash MMU code being built for 64s
platforms that don't need it.
# CONFIG_PPC_64S_HASH_MMU is not set
<stdin>:1559:2: warning: #warning syscall futex_waitv not implemented
[-Wcpp]
arch/powerpc/platforms/cell/spu_base.c: In function '__spu_kernel_slb':
arch/powerpc/platforms/cell/spu_base.c:215:38: error: 'mmu_linear_psize'
undeclared (first use in this function); did you mean 'mmu_virtual_psize'?
215 | llp = mmu_psize_defs[mmu_linear_psize].sllp;
| ^~~~~~~~~~~~~~~~
| mmu_virtual_psize
arch/powerpc/platforms/cell/spu_base.c:215:38: note: each undeclared
identifier is reported only once for each function it appears in
make[3]: *** [scripts/Makefile.build:287:
arch/powerpc/platforms/cell/spu_base.o] Error 1
make[2]: *** [scripts/Makefile.build:549: arch/powerpc/platforms/cell]
Error 2
make[1]: *** [scripts/Makefile.build:549: arch/powerpc/platforms] Error 2
make: *** [Makefile:1846: arch/powerpc] Error 2
With CONFIG_SPU_BASE removed, the above voids and I get to the final
link with the following errors:
powerpc64-linux-gnu-ld: warning: discarding dynamic section .glink
powerpc64-linux-gnu-ld: warning: discarding dynamic section .plt
powerpc64-linux-gnu-ld: linkage table error against `update_mmu_cache'
powerpc64-linux-gnu-ld: stubs don't match calculated size
powerpc64-linux-gnu-ld: can not build stubs: bad value
powerpc64-linux-gnu-ld:
arch/powerpc/platforms/pasemi/setup.o:(.toc+0x0): undefined reference to
`mmu_slb_size'
powerpc64-linux-gnu-ld: arch/powerpc/platforms/cell/iommu.o:(.toc+0x0):
undefined reference to `htab_address'
powerpc64-linux-gnu-ld: arch/powerpc/platforms/cell/iommu.o:(.toc+0x8):
undefined reference to `htab_size_bytes'
powerpc64-linux-gnu-ld: arch/powerpc/platforms/ps3/htab.o:(.toc+0x0):
undefined reference to `mmu_hash_ops'
powerpc64-linux-gnu-ld: mm/filemap.o: in function `.filemap_map_pages':
(.text+0x6f08): undefined reference to `.update_mmu_cache'
powerpc64-linux-gnu-ld: mm/gup.o: in function `.follow_page_pte':
gup.c:(.text+0x1b38): undefined reference to `.update_mmu_cache'
powerpc64-linux-gnu-ld: mm/memory.o: in function `.wp_page_copy':
memory.c:(.text+0xd84): undefined reference to `.update_mmu_cache'
powerpc64-linux-gnu-ld: memory.c:(.text+0x1528): undefined reference to
`.update_mmu_cache'
powerpc64-linux-gnu-ld: mm/memory.o: in function `.finish_mkwrite_fault':
(.text+0x3d6c): undefined reference to `.update_mmu_cache'
powerpc64-linux-gnu-ld: mm/memory.o:memory.c:(.text+0x4254): more
undefined references to `.update_mmu_cache' follow
make: *** [Makefile:1161: vmlinux] Error 1
