From: "Leonardo Brás" <leobras.c@gmail.com>
To: Alexey Kardashevskiy <aik@ozlabs.ru>,
Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>, Joel Stanley <joel@jms.id.au>,
Christophe Leroy <christophe.leroy@c-s.fr>,
Nicolin Chen <nicoleotsuka@gmail.com>,
Niklas Schnelle <schnelle@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 07/11] powerpc/pseries/iommu: Reorganize iommu_table_setparms*() with new helper
Date: Tue, 13 Jul 2021 01:47:03 -0300 [thread overview]
Message-ID: <b25dff0f130b9ab721b8b524e55a3cd4c244a8f3.camel@gmail.com> (raw)
In-Reply-To: <97626d3883ed207b818760a8239babb08a6b5c59.camel@gmail.com>
Hello Alexey,
On Fri, 2021-06-18 at 19:26 -0300, Leonardo Brás wrote:
> >
> > > + unsigned long liobn,
> > > unsigned long win_addr,
> > > + unsigned long
> > > window_size,
> > > unsigned long page_shift,
> > > + unsigned long base,
> > > struct
> > > iommu_table_ops *table_ops)
> >
> >
> > iommu_table_setparms() rather than passing 0 around.
> >
> > The same comment about "liobn" - set it in
> > iommu_table_setparms_lpar().
> > The reviewer will see what field atters in what situation imho.
> >
>
> The idea here was to keep all tbl parameters setting in
> _iommu_table_setparms (or iommu_table_setparms_common).
>
> I understand the idea that each one of those is optional in the other
> case, but should we keep whatever value is present in the other
> variable (not zeroing the other variable), or do someting like:
>
> tbl->it_index = 0;
> tbl->it_base = basep;
> (in iommu_table_setparms)
>
> tbl->it_index = liobn;
> tbl->it_base = 0;
> (in iommu_table_setparms_lpar)
>
This one is supposed to be a question, but I missed the question mark.
Sorry about that.
I would like to get your opinion in this :)
next prev parent reply other threads:[~2021-07-13 4:47 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-30 16:31 [PATCH v4 00/11] DDW + Indirect Mapping Leonardo Bras
2021-04-30 16:31 ` [PATCH v4 01/11] powerpc/pseries/iommu: Replace hard-coded page shift Leonardo Bras
2021-04-30 16:31 ` [PATCH v4 02/11] powerpc/kernel/iommu: Add new iommu_table_in_use() helper Leonardo Bras
2021-05-10 7:34 ` Alexey Kardashevskiy
2021-04-30 16:31 ` [PATCH v4 03/11] powerpc/pseries/iommu: Add iommu_pseries_alloc_table() helper Leonardo Bras
2021-04-30 16:31 ` [PATCH v4 04/11] powerpc/pseries/iommu: Add ddw_list_new_entry() helper Leonardo Bras
2021-04-30 16:31 ` [PATCH v4 05/11] powerpc/pseries/iommu: Allow DDW windows starting at 0x00 Leonardo Bras
2021-04-30 16:31 ` [PATCH v4 06/11] powerpc/pseries/iommu: Add ddw_property_create() and refactor enable_ddw() Leonardo Bras
2021-05-10 7:34 ` Alexey Kardashevskiy
2021-04-30 16:31 ` [PATCH v4 07/11] powerpc/pseries/iommu: Reorganize iommu_table_setparms*() with new helper Leonardo Bras
2021-05-10 7:34 ` Alexey Kardashevskiy
2021-06-18 22:26 ` Leonardo Brás
2021-07-13 4:47 ` Leonardo Brás [this message]
2021-07-14 8:32 ` Alexey Kardashevskiy
2021-07-14 19:02 ` Leonardo Brás
2021-04-30 16:31 ` [PATCH v4 08/11] powerpc/pseries/iommu: Update remove_dma_window() to accept property name Leonardo Bras
2021-05-11 7:57 ` Alexey Kardashevskiy
2021-04-30 16:31 ` [PATCH v4 09/11] powerpc/pseries/iommu: Find existing DDW with given " Leonardo Bras
2021-05-11 7:57 ` Alexey Kardashevskiy
2021-04-30 16:31 ` [PATCH v4 10/11] powerpc/pseries/iommu: Make use of DDW for indirect mapping Leonardo Bras
2021-05-11 7:57 ` Alexey Kardashevskiy
2021-07-13 4:36 ` Leonardo Brás
2021-07-14 8:38 ` Alexey Kardashevskiy
2021-07-14 19:25 ` Leonardo Brás
2021-04-30 16:31 ` [PATCH v4 11/11] powerpc/pseries/iommu: Rename "direct window" to "dma window" Leonardo Bras
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