From: Shivaprasad G Bhat <sbhat@linux.ibm.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: kvm@vger.kernel.org, aik@ozlabs.ru, linux-kernel@vger.kernel.org,
oohall@gmail.com, ruscur@russell.cc, brking@linux.vnet.ibm.com,
robh@kernel.org, svaidy@linux.ibm.com, aneesh.kumar@kernel.org,
joel@jms.id.au, naveen.n.rao@linux.ibm.com, msuchanek@suse.de,
jroedel@suse.de, gbatra@linux.vnet.ibm.com, npiggin@gmail.com,
alex.williamson@redhat.com, mahesh@linux.ibm.com,
tpearson@raptorengineering.com,
Alexey Kardashevskiy <aik@amd.com>,
vaibhav@linux.ibm.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [RFC PATCH v2 0/6] powerpc: pSeries: vfio: iommu: Re-enable support for SPAPR TCE VFIO
Date: Tue, 7 May 2024 20:40:23 +0530 [thread overview]
Message-ID: <1c277ae0-14cc-4d79-a7a1-455ed996b67a@linux.ibm.com> (raw)
In-Reply-To: <20240506174357.GF901876@ziepe.ca>
Hi Jason,
On 5/6/24 23:13, Jason Gunthorpe wrote:
> On Sat, May 04, 2024 at 12:33:53AM +0530, Shivaprasad G Bhat wrote:
>> We have legacy workloads using VFIO in userspace/kvm guests running
>> on downstream distro kernels. We want these workloads to be able to
>> continue running on our arch.
> It has been broken since 2018, I don't find this reasoning entirely
> reasonable :\
Though upstream has been broken since 2018 for pSeries, the breaking
patches got trickled into downstream distro kernels only in the last few
years. The legacy workloads that were running on PowerNV with these
downstream distros are now broken on the pSeries logical partitions
without the fixes in this series.
>> I firmly believe the refactoring in this patch series is a step in
>> that direction.
> But fine, as long as we are going to fix it. PPC really needs this to
> be resolved to keep working.
Thanks, We are working on it.
Regards,
Shivaprasad
>
> Jason
next prev parent reply other threads:[~2024-05-07 15:11 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 ` [RFC PATCH v2 0/6] powerpc: pSeries: vfio: iommu: Re-enable support for SPAPR TCE VFIO Jason Gunthorpe
2024-05-02 1:29 ` 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 [this message]
2024-05-10 18:33 ` Shawn Anastasio
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