From: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev,
joro@8bytes.org, bhelgaas@google.com, robin.murphy@arm.com,
will@kernel.org
Cc: jean-philippe@linaro.org, darren@os.amperecomputing.com,
scott@os.amperecomputing.com
Subject: Re: [PATCH v2 0/2] Add support to enable ATS on VFs independently
Date: Wed, 1 Mar 2023 20:24:10 -0800 [thread overview]
Message-ID: <917b1d52-54c2-ea8b-5382-dbd8ce71a76c@linux.intel.com> (raw)
In-Reply-To: <20230228042137.1941024-1-gankulkarni@os.amperecomputing.com>
On 2/27/23 8:21 PM, Ganapatrao Kulkarni wrote:
> As discussed in [1], adding a helper function to configure the STU of an
> ATS capability. Function pci_ats_stu_configure() can be called to program
> the STU while enumerating the PF, to support scenarios like PF is not
> enabled with ATS, whereas VFs can enable it.
>
> In SMMU-V3 driver, calling pci_ats_stu_configure() to confgiure the STU
> while enumerating a PF in passthrough mode.
It looks like you are fixing this issue only for your platform. Is there any
way to generically program PF STU? May be from pci_ats_init()?
--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer
prev parent reply other threads:[~2023-03-02 4:24 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-28 4:21 [PATCH v2 0/2] Add support to enable ATS on VFs independently Ganapatrao Kulkarni
2023-02-28 4:21 ` [PATCH v2 1/2] PCI/ATS: Add a helper function to configure ATS STU of a PF Ganapatrao Kulkarni
2023-02-28 16:30 ` Sathyanarayanan Kuppuswamy
2023-03-08 8:54 ` Ganapatrao Kulkarni
2023-03-13 21:12 ` Bjorn Helgaas
2023-03-13 22:30 ` Sathyanarayanan Kuppuswamy
2023-03-13 22:42 ` Bjorn Helgaas
2023-03-14 10:08 ` Ganapatrao Kulkarni
2023-03-14 12:52 ` Sathyanarayanan Kuppuswamy
2023-03-14 14:36 ` Ganapatrao Kulkarni
2023-03-14 16:02 ` Bjorn Helgaas
2023-03-14 16:50 ` Sathyanarayanan Kuppuswamy
2023-03-14 17:10 ` Bjorn Helgaas
2023-03-14 18:01 ` Ganapatrao Kulkarni
2023-03-14 18:12 ` Sathyanarayanan Kuppuswamy
2023-03-14 21:17 ` Bjorn Helgaas
2023-03-15 4:22 ` Sathyanarayanan Kuppuswamy
2023-03-15 14:30 ` Ganapatrao Kulkarni
2023-02-28 4:21 ` [PATCH v2 2/2] iommu/arm-smmu-v3: Configure STU of a PF if ATS is not enabled Ganapatrao Kulkarni
2023-03-13 14:19 ` Ganapatrao Kulkarni
2023-03-02 4:24 ` Sathyanarayanan Kuppuswamy [this message]
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