The patch titled
Subject: sparc: advertise gigantic page support
has been added to the -mm tree. Its filename is
sparc-advertise-gigantic-page-support.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/sparc-advertise-gigantic-page-support.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/sparc-advertise-gigantic-page-support.patch
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------------------------------------------------------
From: Alexandre Ghiti <alex@xxxxxxxx>
Subject: sparc: advertise gigantic page support
sparc actually supports gigantic pages and selecting
ARCH_HAS_GIGANTIC_PAGE allows it to allocate and free gigantic pages at
runtime.
sparc allows configuration such as huge pages of 16GB, pages of 8KB and
MAX_ORDER = 13 (default): HPAGE_SHIFT (34) - PAGE_SHIFT (13) = 21 >=
MAX_ORDER (13)
Link: http://lkml.kernel.org/r/20190327063626.18421-3-alex@xxxxxxxx
Signed-off-by: Alexandre Ghiti <alex@xxxxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Andy Lutomirsky <luto@xxxxxxxxxx>
Cc: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: "H . Peter Anvin" <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/sparc/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/arch/sparc/Kconfig~sparc-advertise-gigantic-page-support
+++ a/arch/sparc/Kconfig
@@ -91,6 +91,7 @@ config SPARC64
select ARCH_CLOCKSOURCE_DATA
select ARCH_HAS_PTE_SPECIAL
select PCI_DOMAINS if PCI
+ select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA
config ARCH_DEFCONFIG
string
_
Patches currently in -mm which might be from alex@xxxxxxxx are
sh-advertise-gigantic-page-support.patch
sparc-advertise-gigantic-page-support.patch
mm-simplify-memory_isolation-compaction-cma-into-contig_alloc.patch
hugetlb-allow-to-free-gigantic-pages-regardless-of-the-configuration.patch
