From: RashmicaGupta <rashmicy@gmail.com>
To: Anshuman Khandual <khandual@linux.vnet.ibm.com>,
Rashmica Gupta <rashmica.g@gmail.com>,
linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au
Subject: Re: [PATCH] powerpc/mm: Dump hash table
Date: Mon, 10 Apr 2017 15:14:11 +1000 [thread overview]
Message-ID: <2ce28fb7-9dce-c35d-d0a7-f09b2f147195@gmail.com> (raw)
In-Reply-To: <3b8a7252-dc80-8c04-2df8-4dca17348f8f@linux.vnet.ibm.com>
On 10/04/17 14:02, Anshuman Khandual wrote:
> On 04/10/2017 07:34 AM, Rashmica Gupta wrote:
>> Current behaviour assumes that memory in RAM is contiguous and
>> iterates from the start of RAM to (start + size of memory). When the
>> memory isn't physically contiguous, this approach doesn't work.
> In dis contiguous platform, we just finish up walking linear
> mapping prematurely before the end of the RAM ?
Yes, that is what the following example explains.
>
>> If memory exists at 0-5 GB and 6-10 GB then the current approach will
>> check if entries exist in the hash table from 0GB to 9GB. This patch
>> changes the behaviour to iterate up to the end of RAM.
> So it fixes the commit which added memblock_phys_mem_size().
> Hence needs "Fixes: " tag as well.
>
Woops, will add that!
next prev parent reply other threads:[~2017-04-10 5:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-10 2:04 [PATCH] powerpc/mm: Dump hash table Rashmica Gupta
2017-04-10 4:02 ` Anshuman Khandual
2017-04-10 5:14 ` RashmicaGupta [this message]
2017-04-13 11:23 ` Michael Ellerman
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