From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Alexey Kardashevskiy <aik@ozlabs.ru>,
Nicolin Chen <nicoleotsuka@gmail.com>,
David Gibson <david@gibson.dropbear.id.au>,
Leonardo Bras <leobras.c@gmail.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
kernel test robot <lkp@intel.com>,
Frederic Barrat <fbarrat@linux.ibm.com>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 00/11] DDW + Indirect Mapping
Date: Tue, 31 Aug 2021 23:56:58 +1000 [thread overview]
Message-ID: <163041821834.889087.5084622813010302887.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <20210817063929.38701-1-leobras.c@gmail.com>
On Tue, 17 Aug 2021 03:39:18 -0300, Leonardo Bras wrote:
> So far it's assumed possible to map the guest RAM 1:1 to the bus, which
> works with a small number of devices. SRIOV changes it as the user can
> configure hundreds VFs and since phyp preallocates TCEs and does not
> allow IOMMU pages bigger than 64K, it has to limit the number of TCEs
> per a PE to limit waste of physical pages.
>
> As of today, if the assumed direct mapping is not possible, DDW creation
> is skipped and the default DMA window "ibm,dma-window" is used instead.
>
> [...]
Applied to powerpc/next.
[01/11] powerpc/pseries/iommu: Replace hard-coded page shift
https://git.kernel.org/powerpc/c/0c634bafe3bbee7a36dca7f1277057e05bf14d91
[02/11] powerpc/kernel/iommu: Add new iommu_table_in_use() helper
https://git.kernel.org/powerpc/c/3c33066a21903076722a2881556a92aa3cd7d359
[03/11] powerpc/pseries/iommu: Add iommu_pseries_alloc_table() helper
https://git.kernel.org/powerpc/c/4ff8677a0b192a58d998d1d34fc5168203041a24
[04/11] powerpc/pseries/iommu: Add ddw_list_new_entry() helper
https://git.kernel.org/powerpc/c/92a23219299cedde52e3298788484f4875d5ce0f
[05/11] powerpc/pseries/iommu: Allow DDW windows starting at 0x00
https://git.kernel.org/powerpc/c/2ca73c54ce24489518a56d816331b774044c2445
[06/11] powerpc/pseries/iommu: Add ddw_property_create() and refactor enable_ddw()
https://git.kernel.org/powerpc/c/7ed2ed2db2685a285cb09ab330dc4efea0b64022
[07/11] powerpc/pseries/iommu: Reorganize iommu_table_setparms*() with new helper
https://git.kernel.org/powerpc/c/fc8cba8f989fb98e496b33a78476861e246c42a0
[08/11] powerpc/pseries/iommu: Update remove_dma_window() to accept property name
https://git.kernel.org/powerpc/c/a5fd95120c653962a9e75e260a35436b96d2c991
[09/11] powerpc/pseries/iommu: Find existing DDW with given property name
https://git.kernel.org/powerpc/c/8599395d34f2dd7b77bef42da1d99798e7a3d58f
[10/11] powerpc/pseries/iommu: Make use of DDW for indirect mapping
https://git.kernel.org/powerpc/c/381ceda88c4c4c8345cad1cffa6328892f15dca6
[11/11] powerpc/pseries/iommu: Rename "direct window" to "dma window"
https://git.kernel.org/powerpc/c/57dbbe590f152e5e8a3ff8bf5ba163df34eeae0b
cheers
prev parent reply other threads:[~2021-08-31 13:59 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-17 6:39 [PATCH v6 00/11] DDW + Indirect Mapping Leonardo Bras
2021-08-17 6:39 ` [PATCH v6 01/11] powerpc/pseries/iommu: Replace hard-coded page shift Leonardo Bras
2021-08-17 6:39 ` [PATCH v6 02/11] powerpc/kernel/iommu: Add new iommu_table_in_use() helper Leonardo Bras
2021-08-27 16:52 ` Frederic Barrat
2021-08-17 6:39 ` [PATCH v6 03/11] powerpc/pseries/iommu: Add iommu_pseries_alloc_table() helper Leonardo Bras
2021-08-17 6:39 ` [PATCH v6 04/11] powerpc/pseries/iommu: Add ddw_list_new_entry() helper Leonardo Bras
2021-08-17 6:39 ` [PATCH v6 05/11] powerpc/pseries/iommu: Allow DDW windows starting at 0x00 Leonardo Bras
2021-08-17 6:39 ` [PATCH v6 06/11] powerpc/pseries/iommu: Add ddw_property_create() and refactor enable_ddw() Leonardo Bras
2021-08-27 16:55 ` Frederic Barrat
2021-08-17 6:39 ` [PATCH v6 07/11] powerpc/pseries/iommu: Reorganize iommu_table_setparms*() with new helper Leonardo Bras
2021-08-17 6:39 ` [PATCH v6 08/11] powerpc/pseries/iommu: Update remove_dma_window() to accept property name Leonardo Bras
2021-08-27 16:58 ` Frederic Barrat
2021-08-17 6:39 ` [PATCH v6 09/11] powerpc/pseries/iommu: Find existing DDW with given " Leonardo Bras
2021-08-17 6:39 ` [PATCH v6 10/11] powerpc/pseries/iommu: Make use of DDW for indirect mapping Leonardo Bras
2021-08-27 17:06 ` Frederic Barrat
2021-08-27 17:53 ` Leonardo Brás
2021-08-17 6:39 ` [PATCH v6 11/11] powerpc/pseries/iommu: Rename "direct window" to "dma window" Leonardo Bras
2021-08-30 17:48 ` [PATCH v6 00/11] DDW + Indirect Mapping David Christensen
2021-08-31 20:18 ` Leonardo Brás
2021-08-31 20:39 ` David Christensen
2021-08-31 20:49 ` Leonardo Brás
2021-08-31 13:56 ` Michael Ellerman [this message]
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