From: Srirangan Madhavan <smadhavan@nvidia.com>
To: Alex Williamson <alex@shazbot.org>
Cc: Alison Schofield <alison.schofield@intel.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Dave Jiang <dave.jiang@intel.com>,
Davidlohr Bueso <dave@stgolabs.net>,
Ira Weiny <ira.weiny@intel.com>,
Jonathan Cameron <jic23@kernel.org>,
Vishal Verma <vishal.l.verma@intel.com>,
linux-cxl@vger.kernel.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org,
Alex Williamson <alex.williamson@redhat.com>,
vsethi@nvidia.com,
Sai Yashwanth Reddy Kancherla <skancherla@nvidia.com>,
Vishal Aslot <vaslot@nvidia.com>,
Manish Honap <mhonap@nvidia.com>, Jiandi An <jan@nvidia.com>,
Richard Cheng <icheng@nvidia.com>,
linux-tegra@vger.kernel.org
Subject: Re: [PATCH v11 00/12] PCI/CXL: Add CXL reset support for Type 2 devices
Date: Wed, 9 Sep 2026 18:01:14 -0700 [thread overview]
Message-ID: <b2297a6e-72e4-41e9-93f2-98a962e5461c@nvidia.com> (raw)
In-Reply-To: <20260909151309.7e1883b9@shazbot.org>
On 9/9/26 2:13 PM, Alex Williamson wrote:
> How does this provide multi-tenancy then? vfio-pci considers the
> device to be scrubbed of tenant data after a pci_reset_function() and
> I don't think Manish's series alters that. Thanks,
>
> Alex
Hi Alex!
I missed considering this.
In V12 I'm exposing cxl_reset when the device advertises CXL Reset
Memory Clear capability and sets RST_MEM_CLR_EN when initiating reset.
I added the gate to prevent exposing a non-scrubbing reset to VFIO.
--
Regards,
Srirangan
prev parent reply other threads:[~2026-09-10 1:01 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-02 7:27 Srirangan Madhavan
2026-09-02 7:27 ` [PATCH v11 01/12] cxl: Move HDM decoder programming helpers Srirangan Madhavan
2026-09-02 7:27 ` [PATCH v11 02/12] cxl: Make HDM commit helpers available to reset code Srirangan Madhavan
2026-09-02 7:27 ` [PATCH v11 03/12] cxl: Share HDM decoder decode logic Srirangan Madhavan
2026-09-02 7:27 ` [PATCH v11 04/12] cxl: Cache decoder settings on PCI devices Srirangan Madhavan
2026-09-02 7:27 ` [PATCH v11 05/12] cxl: Cache endpoint decoder settings during PCI enumeration Srirangan Madhavan
2026-09-02 14:03 ` Li Ming
2026-09-10 0:07 ` Srirangan Madhavan
2026-09-10 2:21 ` Li Ming
2026-09-10 7:17 ` Srirangan Madhavan
2026-09-02 7:27 ` [PATCH v11 06/12] cxl: Add CXL Device Reset helper Srirangan Madhavan
2026-09-02 7:27 ` [PATCH v11 07/12] cxl: Validate HDM ranges before CXL reset Srirangan Madhavan
2026-09-04 9:19 ` Richard Cheng
2026-09-10 0:10 ` Srirangan Madhavan
2026-09-02 7:28 ` [PATCH v11 08/12] PCI/CXL: Reject CXL Reset on multifunction devices Srirangan Madhavan
2026-09-04 9:26 ` Richard Cheng
2026-09-10 0:15 ` Srirangan Madhavan
2026-09-02 7:28 ` [PATCH v11 09/12] cxl: Restore CXL HDM state after PCI reset Srirangan Madhavan
2026-09-04 9:23 ` Richard Cheng
2026-09-10 0:18 ` Srirangan Madhavan
2026-09-02 7:28 ` [PATCH v11 10/12] PCI/CXL: Expose CXL Reset as a PCI reset method Srirangan Madhavan
2026-09-02 7:28 ` [PATCH v11 11/12] Documentation/ABI: Document CXL Reset " Srirangan Madhavan
2026-09-02 7:28 ` [PATCH v11 12/12] PCI/CXL: Restore HDM state after CXL bus reset Srirangan Madhavan
2026-09-04 9:15 ` [PATCH v11 00/12] PCI/CXL: Add CXL reset support for Type 2 devices Richard Cheng
2026-09-10 0:56 ` Srirangan Madhavan
2026-09-09 21:13 ` Alex Williamson
2026-09-10 1:01 ` Srirangan Madhavan [this message]
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