diff options
| author | Alexandre Ghiti <[email protected]> | 2019-05-13 17:18:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2019-05-14 09:47:47 -0700 |
| commit | a861bbce27634160ae0330126b4ef001d6941c8f (patch) | |
| tree | e8932e025f5540e7b36f53b812f5031eae805797 | |
| parent | 0d7b4a607d8f0f95f1ce49e993a04317d10a4ecd (diff) | |
sh: advertise gigantic page support
Patch series "Fix free/allocation of runtime gigantic pages", v8.
This series fixes sh and sparc that did not advertise their gigantic page
support and then were not able to allocate and free those pages at
runtime. It renames MEMORY_ISOLATION && COMPACTION || CMA condition into
the more accurate CONTIG_ALLOC, since it allows the definition of
alloc_contig_range function.
Finally, it then fixes the wrong definition of ARCH_HAS_GIGANTIC_PAGE
config that, without MEMORY_ISOLATION && COMPACTION || CMA defined, did
not allow architectures to free boottime allocated gigantic pages although
unrelated.
This patch (of 4):
sh actually supports gigantic pages and selecting ARCH_HAS_GIGANTIC_PAGE
allows it to allocate and free gigantic pages at runtime.
At least sdk7786_defconfig exposes such a configuration with huge pages of
64MB, pages of 4KB and MAX_ORDER = 11: HPAGE_SHIFT (26) - PAGE_SHIFT (12)
= 14 >= MAX_ORDER (11)
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Alexandre Ghiti <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: "H . Peter Anvin" <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andy Lutomirsky <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Mike Kravetz <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | arch/sh/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 0be08d586d40..6349396317a9 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -53,6 +53,7 @@ config SUPERH select HAVE_FUTEX_CMPXCHG if FUTEX select HAVE_NMI select NEED_SG_DMA_LENGTH + select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA help The SuperH is a RISC processor targeted for use in embedded systems |