From: Alexandre Ghiti <alex@ghiti.fr>
To: aneesh.kumar@linux.ibm.com, mpe@ellerman.id.au,
Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
"David S . Miller" <davem@davemloft.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H . Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Dave Hansen <dave.hansen@linux.intel.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Mike Kravetz <mike.kravetz@oracle.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
sparclinux@vger.kernel.org, linux-mm@kvack.org
Cc: Alexandre Ghiti <alex@ghiti.fr>
Subject: [PATCH v8 2/4] sparc: Advertise gigantic page support
Date: Wed, 27 Mar 2019 02:36:24 -0400 [thread overview]
Message-ID: <20190327063626.18421-3-alex@ghiti.fr> (raw)
In-Reply-To: <20190327063626.18421-1-alex@ghiti.fr>
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)
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Acked-by: David S. Miller <davem@davemloft.net>
---
arch/sparc/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 40f8f4f73fe8..ebcc9435db08 100644
--- a/arch/sparc/Kconfig
+++ b/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
--
2.20.1
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next prev parent reply other threads:[~2019-03-27 6:39 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-27 6:36 [PATCH v8 0/4] Fix free/allocation of runtime gigantic pages Alexandre Ghiti
2019-03-27 6:36 ` [PATCH v8 1/4] sh: Advertise gigantic page support Alexandre Ghiti
2019-03-27 6:36 ` Alexandre Ghiti [this message]
2019-03-27 6:36 ` [PATCH v8 3/4] mm: Simplify MEMORY_ISOLATION && COMPACTION || CMA into CONTIG_ALLOC Alexandre Ghiti
2019-03-27 6:36 ` [PATCH v8 4/4] hugetlb: allow to free gigantic pages regardless of the configuration Alexandre Ghiti
2019-03-27 7:01 ` Aneesh Kumar K.V
2019-03-27 8:44 ` Alexandre Ghiti
2019-03-27 8:55 ` Aneesh Kumar K.V
2019-03-27 9:48 ` Alexandre Ghiti
2019-03-27 10:05 ` Aneesh Kumar K.V
2019-03-27 12:54 ` Alexandre Ghiti
2019-03-28 20:43 ` Mike Kravetz
2019-03-29 6:54 ` Alex Ghiti
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