From: Jonathan Cameron <jic23@kernel.org>
To: <mhonap@nvidia.com>
Cc: <alex@shazbot.org>, <jgg@ziepe.ca>, <ankita@nvidia.com>,
<dave.jiang@intel.com>, <alejandro.lucero-palau@amd.com>,
<smadhavan@nvidia.com>, <corbet@lwn.net>,
<skhan@linuxfoundation.org>, <dave@stgolabs.net>,
<alison.schofield@intel.com>, <vishal.l.verma@intel.com>,
<iweiny@kernel.org>, <ming.li@zohomail.com>, <yishaih@nvidia.com>,
<skolothumtho@nvidia.com>, <kevin.tian@intel.com>,
<bhelgaas@google.com>, <dmatlack@google.com>, <kees@kernel.org>,
<gustavoars@kernel.org>, <cjia@nvidia.com>, <kjaju@nvidia.com>,
<vsethi@nvidia.com>, <zhiw@nvidia.com>,
<linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<kvm@vger.kernel.org>, <linux-cxl@vger.kernel.org>,
<linux-pci@vger.kernel.org>, <linux-kselftest@vger.kernel.org>,
<linux-hardening@vger.kernel.org>
Subject: Re: [PATCH v5 03/27] cxl: Move component register defines to uapi/cxl/cxl_regs.h
Date: Tue, 22 Sep 2026 02:43:41 +0100 [thread overview]
Message-ID: <20260922024341.7aecc867@jic23-hlaptop> (raw)
In-Reply-To: <20260916183540.3813685-4-mhonap@nvidia.com>
On Thu, 17 Sep 2026 00:05:16 +0530
<mhonap@nvidia.com> wrote:
> From: Manish Honap <mhonap@nvidia.com>
>
> The CXL component and HDM decoder register layout is spec-defined and is
> needed by a userspace consumer that cannot include the private
> drivers/cxl/cxl.h
>
> The vfio-cxl selftest
> (tools/testing/selftests/vfio/vfio_cxl_type2_test.c) builds against
> installed uapi headers only. Move those defines to a new uapi header, the
> way PCI register offsets live in uapi pci_regs.h, and include it from
> drivers/cxl/cxl.h so existing in-kernel users are unchanged.
>
> No functional change; the GENMASK and BIT forms are written as plain
> values as a uapi header requirement.
I thought we'd fixed that these days... And indeed we have
see include/uapi/linux/bits.h for __GENMASK()
and include/uapi/linux/const.h for _BITUL()
Both are in use in pci_regs.h for instance.
Jonathan
next prev parent reply other threads:[~2026-09-22 1:43 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-16 18:35 [PATCH v5 00/27] vfio/pci: Add CXL Type-2 device passthrough support mhonap
2026-09-16 18:35 ` [PATCH v5 01/27] cxl/regs: Split the BAR block request and ioremap helpers mhonap
2026-09-22 1:28 ` Jonathan Cameron
2026-09-16 18:35 ` [PATCH v5 02/27] cxl/regs: Let a BAR-owning driver own the component register block mhonap
2026-09-22 1:36 ` Jonathan Cameron
2026-09-16 18:35 ` [PATCH v5 03/27] cxl: Move component register defines to uapi/cxl/cxl_regs.h mhonap
2026-09-22 1:43 ` Jonathan Cameron [this message]
2026-09-16 18:35 ` [PATCH v5 04/27] cxl: Add cxl_reset_dvsec_sequence() for vfio-pci mhonap
2026-09-16 18:35 ` [PATCH v5 05/27] vfio/pci: Add the CXL provider ops registration interface mhonap
2026-09-16 18:35 ` [PATCH v5 06/27] vfio/pci: Detect CXL devices and load the CXL provider on demand mhonap
2026-09-17 8:48 ` Richard Cheng
2026-09-21 10:05 ` Manish Honap
2026-09-16 18:35 ` [PATCH v5 07/27] vfio/pci: Honor -EPROBE_DEFER from CXL provider probe mhonap
2026-09-16 18:35 ` [PATCH v5 08/27] vfio/pci: Fall back to plain vfio-pci when CXL init fails mhonap
2026-09-22 2:15 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 09/27] vfio/pci: Add a generic excluded-range list mhonap
2026-09-22 2:13 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 10/27] vfio/pci: Migrate MSI-X exclusion onto the " mhonap
2026-09-16 18:35 ` [PATCH v5 11/27] vfio/pci: Virtualize the CXL DVSEC in vfio_pci_config.c mhonap
2026-09-22 2:14 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 12/27] vfio/pci: Call the CXL open and close hooks around device use mhonap
2026-09-16 18:35 ` [PATCH v5 13/27] vfio/pci: Bracket PCI resets with the CXL reset hooks mhonap
2026-09-22 2:14 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 14/27] vfio/pci: Provide an opt-out for the CXL Type-2 extensions mhonap
2026-09-16 18:35 ` [PATCH v5 15/27] vfio/cxl: Add the vfio-cxl provider module skeleton mhonap
2026-09-16 18:35 ` [PATCH v5 16/27] vfio/cxl: Create the CXL memdev and set media ready at bind mhonap
2026-09-22 2:14 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 17/27] vfio/cxl: Own the whole component register BAR mhonap
2026-09-22 2:14 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 18/27] vfio/cxl: Expose the HDM memory region to the guest mhonap
2026-09-22 2:14 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 19/27] vfio/cxl: Contain HDM memory errors with memory_failure() mhonap
2026-09-16 18:35 ` [PATCH v5 20/27] vfio/cxl: Expose the HDM decoder registers read-only to the guest mhonap
2026-09-22 2:13 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 21/27] vfio/cxl: Exclude the HDM decoder registers from direct BAR access mhonap
2026-09-17 7:28 ` Richard Cheng
2026-09-21 9:52 ` Manish Honap
2026-09-16 18:35 ` [PATCH v5 22/27] vfio/cxl: Clear the HDM access gate after a hot reset mhonap
2026-09-22 2:13 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 23/27] vfio/cxl: Describe the CXL device and decoder geometry to userspace mhonap
2026-09-16 18:35 ` [PATCH v5 24/27] vfio/cxl: Export the HDM memory region as a dma-buf mhonap
2026-09-17 7:55 ` Richard Cheng
2026-09-21 9:58 ` Manish Honap
2026-09-16 18:35 ` [PATCH v5 25/27] vfio/cxl: Run the CXL reset at the vfio reset points mhonap
2026-09-17 8:11 ` Richard Cheng
2026-09-21 10:01 ` Manish Honap
2026-09-22 2:13 ` Alex Williamson
2026-09-16 18:35 ` [PATCH v5 26/27] Documentation: vfio-pci: Document CXL Type-2 device passthrough mhonap
2026-09-16 19:33 ` Gregory Price
2026-09-21 9:43 ` Manish Honap
2026-09-16 18:35 ` [PATCH v5 27/27] selftests/vfio: Add CXL Type-2 passthrough tests mhonap
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