From: Alex Ghiti <alex@ghiti.fr>
To: David Miller <davem@davemloft.net>
Cc: vbabka@suse.cz, catalin.marinas@arm.com, will.deacon@arm.com,
benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com,
ysato@users.sourceforge.jp, dalias@libc.org, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org,
dave.hansen@linux.intel.com, luto@kernel.org,
peterz@infradead.org, 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
Subject: Re: [PATCH v5 2/4] sparc: Advertise gigantic page support
Date: Wed, 6 Mar 2019 14:10:54 -0500 [thread overview]
Message-ID: <ac0c5166-f1f6-5339-58e3-a33f085c1220@ghiti.fr> (raw)
In-Reply-To: <20190306.110436.1714716608828903522.davem@davemloft.net>
On 3/6/19 2:04 PM, David Miller wrote:
> From: Alexandre Ghiti <alex@ghiti.fr>
> Date: Wed, 6 Mar 2019 14:00:03 -0500
>
>> 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>
> Much better.
>
> Acked-by: David S. Miller <davem@davemloft.net>
Thanks !
Alex
next prev parent reply other threads:[~2019-03-06 19:11 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-06 19:00 [PATCH v5 0/4] Fix free/allocation of runtime gigantic pages Alexandre Ghiti
2019-03-06 19:00 ` [PATCH v5 1/4] sh: Advertise gigantic page support Alexandre Ghiti
2019-03-06 19:00 ` [PATCH v5 2/4] sparc: " Alexandre Ghiti
2019-03-06 19:04 ` David Miller
2019-03-06 19:10 ` Alex Ghiti [this message]
2019-03-06 19:00 ` [PATCH v5 3/4] mm: Simplify MEMORY_ISOLATION && COMPACTION || CMA into CONTIG_ALLOC Alexandre Ghiti
2019-03-06 19:30 ` Vlastimil Babka
2019-03-06 19:42 ` Alex Ghiti
2019-03-06 19:00 ` [PATCH v5 4/4] hugetlb: allow to free gigantic pages regardless of the configuration Alexandre Ghiti
2019-03-06 19:16 ` Dave Hansen
2019-03-06 20:08 ` Alex Ghiti
2019-03-06 21:17 ` Dave Hansen
2019-03-06 19:20 ` David Miller
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