From: Jason Gunthorpe <jgg@ziepe.ca>
To: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Cc: mpe@ellerman.id.au, tpearson@raptorengineering.com,
alex.williamson@redhat.com, linuxppc-dev@lists.ozlabs.org,
aik@amd.com, npiggin@gmail.com, christophe.leroy@csgroup.eu,
aneesh.kumar@kernel.org, naveen.n.rao@linux.ibm.com,
gbatra@linux.vnet.ibm.com, brking@linux.vnet.ibm.com,
aik@ozlabs.ru, ruscur@russell.cc, robh@kernel.org,
linux-kernel@vger.kernel.org, joel@jms.id.au,
kvm@vger.kernel.org, msuchanek@suse.de, oohall@gmail.com,
mahesh@linux.ibm.com, jroedel@suse.de, vaibhav@linux.ibm.com,
svaidy@linux.ibm.com
Subject: Re: [RFC PATCH v2 0/6] powerpc: pSeries: vfio: iommu: Re-enable support for SPAPR TCE VFIO
Date: Wed, 1 May 2024 11:09:42 -0300 [thread overview]
Message-ID: <20240501140942.GA1723318@ziepe.ca> (raw)
In-Reply-To: <171450753489.10851.3056035705169121613.stgit@linux.ibm.com>
On Tue, Apr 30, 2024 at 03:05:34PM -0500, Shivaprasad G Bhat wrote:
> RFC v1 was posted here [1]. As I was testing more and fixing the
> issues, I realized its clean to have the table_group_ops implemented
> the way it is done on PowerNV and stop 'borrowing' the DMA windows
> for pSeries.
>
> This patch-set implements the iommu table_group_ops for pSeries for
> VFIO SPAPR TCE sub-driver thereby enabling the VFIO support on POWER
> pSeries machines.
Wait, did they previously not have any support?
Again, this TCE stuff needs to go away, not grow. I can grudgingly
accept fixing it where it used to work, but not enabling more HW that
never worked before! :(
Jason
next prev parent reply other threads:[~2024-05-01 14:09 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-30 20:05 [RFC PATCH v2 0/6] powerpc: pSeries: vfio: iommu: Re-enable support for SPAPR TCE VFIO Shivaprasad G Bhat
2024-04-30 20:05 ` [RFC PATCH v2 1/6] powerpc/iommu: Move pSeries specific functions to pseries/iommu.c Shivaprasad G Bhat
2024-04-30 20:06 ` [RFC PATCH v2 2/6] powerpc/pseries/iommu: Fix the VFIO_IOMMU_SPAPR_TCE_GET_INFO ioctl output Shivaprasad G Bhat
2024-04-30 20:06 ` [RFC PATCH v2 3/6] powerpc/pseries/iommu: Use the iommu table[0] for IOV VF's DDW Shivaprasad G Bhat
2024-04-30 20:06 ` [RFC PATCH v2 4/6] vfio/spapr: Always clear TCEs before unsetting the window Shivaprasad G Bhat
2024-04-30 20:06 ` [RFC PATCH v2 5/6] powerpc/iommu: Move dev_has_iommu_table() to iommu.c Shivaprasad G Bhat
2024-04-30 20:06 ` [RFC PATCH v2 6/6] powerpc/iommu: Implement the iommu_table_group_ops for pSeries Shivaprasad G Bhat
2024-05-01 14:09 ` Jason Gunthorpe [this message]
2024-05-02 1:29 ` [RFC PATCH v2 0/6] powerpc: pSeries: vfio: iommu: Re-enable support for SPAPR TCE VFIO Alexey Kardashevskiy
2024-05-03 19:03 ` Shivaprasad G Bhat
2024-05-06 17:43 ` Jason Gunthorpe
2024-05-07 15:10 ` Shivaprasad G Bhat
2024-05-10 18:33 ` Shawn Anastasio
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