linux-kernel - Re: [PATCH v2 2/2] powerpc/mm/hugetlb: Add support for 1G huge pages

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Message-Id: <04189f80-57fd-b921-20b9-565e1b307270@linux.vnet.ibm.com>
Date:   Tue, 16 May 2017 15:57:56 +0530
From:   Anshuman Khandual <khandual@...ux.vnet.ibm.com>
To:     "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        akpm@...ux-foundation.org, mpe@...erman.id.au,
        Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v2 2/2] powerpc/mm/hugetlb: Add support for 1G huge pages

On 05/16/2017 02:47 PM, Aneesh Kumar K.V wrote:
> POWER9 supports hugepages of size 2M and 1G in radix MMU mode. This patch
> enables the usage of 1G page size for hugetlbfs. This also update the helper
> such we can do 1G page allocation at runtime.
> 
> We still don't enable 1G page size on DD1 version. This is to avoid doing
> workaround mentioned in commit: 6d3a0379ebdc8 (powerpc/mm: Add
> radix__tlb_flush_pte_p9_dd1()
> 
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>

Sounds good.

Reviewed-by: Anshuman Khandual <khandual@...ux.vnet.ibm.com>