From: David Gibson <david@gibson.dropbear.id.au>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: linuxppc-dev@lists.ozlabs.org,
Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH kernel] powerpc/powernv/ioda2: Fix calculation for memory allocated for TCE table
Date: Tue, 21 Jul 2015 15:11:28 +1000 [thread overview]
Message-ID: <20150721051128.GL19189@voom.fritz.box> (raw)
In-Reply-To: <1437389151-4042-1-git-send-email-aik@ozlabs.ru>
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On Mon, Jul 20, 2015 at 08:45:51PM +1000, Alexey Kardashevskiy wrote:
> The existing code stores the amount of memory allocated for a TCE table.
> At the moment it uses @offset which is a virtual offset in the TCE table
> which is only correct for a one level tables and it does not include
> memory allocated for intermediate levels. When multilevel TCE table is
> requested, WARN_ON in tce_iommu_create_table() prints a warning.
>
> This adds an additional counter to pnv_pci_ioda2_table_do_alloc_pages()
> to count actually allocated memory.
>
> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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next prev parent reply other threads:[~2015-07-21 5:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-20 10:45 [PATCH kernel] powerpc/powernv/ioda2: Fix calculation for memory allocated for TCE table Alexey Kardashevskiy
2015-07-21 5:11 ` David Gibson [this message]
2015-07-21 6:24 ` Michael Ellerman
2015-07-23 9:45 ` Alexey Kardashevskiy
2015-07-31 4:13 ` [kernel] " Michael Ellerman
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