blackbird-op-linux/arch/powerpc/mm/Makefile, branch master

powerpc/mm: Move ioremap functions out of pgtable_32/64.c

2019-08-27T03:03:35+00:00

Create ioremap_32.c and ioremap_64.c and move respective ioremap functions out of pgtable_32.c and pgtable_64.c In the meantime, fix a few comments and changes a printk() to pr_warn(). Also fix a few oversplitted lines. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/b5c8b02ccefd4ede64c61b53cf64fb5dacb35740.1566309263.git.christophe.leroy@c-s.fr

powerpc/mm: move common 32/64 bits ioremap functions into ioremap.c

2019-08-27T03:03:34+00:00

ioremap(), ioremap_wc() and ioremap_coherent() are now identical on PPC32 and PPC64 as iowa_is_active() will always return false on PPC32. Move them into a new common location called ioremap.c Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/6223803ce024d6ab4dfaa919f44098aed5b4bc33.1566309262.git.christophe.leroy@c-s.fr

powerpc/mm: fix redundant inclusion of pgtable-frag.o in Makefile

2019-05-06T10:21:56+00:00

The patch identified below added pgtable-frag.o to obj-y but some merge witchery kept it also for obj-CONFIG_PPC_BOOK3S_64 This patch clears the duplication. Fixes: 737b434d3d55 ("powerpc/mm: convert Book3E 64 to pte_fragment") Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/mm: Fix makefile for KASAN

2019-05-06T10:21:56+00:00

In commit 17312f258cf6 ("powerpc/mm: Move book3s32 specifics in subdirectory mm/book3s64"), ppc_mmu_32.c was moved and renamed. This patch fixes Makefiles to disable KASAN instrumentation on the new name and location. Fixes: f072015c7b74 ("powerpc: disable KASAN instrumentation on early/critical files.") Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/32: Add KASAN support

2019-05-02T15:20:26+00:00

This patch adds KASAN support for PPC32. The following patch will add an early activation of hash table for book3s. Until then, a warning will be raised if trying to use KASAN on an hash 6xx. To support KASAN, this patch initialises that MMU mapings for accessing to the KASAN shadow area defined in a previous patch. An early mapping is set as soon as the kernel code has been relocated at its definitive place. Then the definitive mapping is set once paging is initialised. For modules, the shadow area is allocated at module_alloc(). Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc: disable KASAN instrumentation on early/critical files.

2019-05-02T15:20:26+00:00

All files containing functions run before kasan_early_init() is called must have KASAN instrumentation disabled. For those file, branch profiling also have to be disabled otherwise each if () generates a call to ftrace_likely_update(). Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/mm: convert Book3E 64 to pte_fragment

2019-05-02T15:20:24+00:00

Book3E 64 is the only subarch not using pte_fragment. In order to allow refactorisation, this patch converts it to pte_fragment. Reviewed-by: Aneesh Kumar K.V Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/mm: make hugetlbpage.c depend on CONFIG_HUGETLB_PAGE

2019-05-02T15:20:23+00:00

The only function in hugetlbpage.c which doesn't depend on CONFIG_HUGETLB_PAGE is gup_hugepte(), and this function is only called from gup_huge_pd() which depends on CONFIG_HUGETLB_PAGE so all the content of hugetlbpage.c depends on CONFIG_HUGETLB_PAGE. This patch modifies Makefile to only compile hugetlbpage.c when CONFIG_HUGETLB_PAGE is set. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/mm: Move nohash specifics in subdirectory mm/nohash

2019-05-02T15:20:22+00:00

Many files in arch/powerpc/mm are only for nohash. This patch creates a subdirectory for them. Signed-off-by: Christophe Leroy [mpe: Shorten new filenames] Signed-off-by: Michael Ellerman

powerpc/mm: Move book3s32 specifics in subdirectory mm/book3s64

2019-05-02T15:20:22+00:00

Several files in arch/powerpc/mm are only for book3S32. This patch creates a subdirectory for them. Signed-off-by: Christophe Leroy [mpe: Shorten new filenames] Signed-off-by: Michael Ellerman