From: Myron Stowe <myron.stowe@redhat.com>
To: bhelgaas@google.com, linux-pci@vger.kernel.org
Cc: keith.busch@intel.com, jdmason@kudzu.us, okaya@kernel.org
Subject: [PATCH 0/2] Augment device matching its upstream Root Port's MPS logic
Date: Mon, 13 Aug 2018 12:19:31 -0600 [thread overview]
Message-ID: <20180813181931.105655.22182.stgit@tak.stowe> (raw)
In commit 27d868b5e6cf ("PCI: Set MPS to match upstream bridge") Keith made
sure every device's MPS setting matched its upstream bridge, making it more
likely that a hot-added devices would work in a system with an optimized MPS
configuration.
This series augments Keith's approach to include tuning down a Root Port's
MPS setting in the case where a hot-added device is not capable of matching
it (see: [1]).
Testing by Dongdong exposed a bug with the logic including Virtual Functions
(VFs). VFs should not be included so a pre-cursor patch, 1/2, was added to
cover such.
[1] https://bugzilla.kernel.org/show_bug.cgi?id=200527
Myron Stowe (2):
PCI: Skip MPS logic for Virtual Functions (VFs)
PCI: Match Root Port's MPS to endpoint's MPSS as necessary
drivers/pci/probe.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
--
next reply other threads:[~2018-08-13 21:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-13 18:19 Myron Stowe [this message]
2018-08-13 18:19 ` [PATCH 1/2] PCI: Skip MPS logic for Virtual Functions (VFs) Myron Stowe
2018-08-13 18:19 ` [PATCH 2/2] PCI: Match Root Port's MPS to endpoint's MPSS as necessary Myron Stowe
2018-08-14 14:18 ` [PATCH 0/2] Augment device matching its upstream Root Port's MPS logic Bjorn Helgaas
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