linux-kernel - Re: [PATCH V4 0/9] CXL: Process event logs

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Message-ID: <Y5y1spikvIrH4qsg@iweiny-desk3>
Date:   Fri, 16 Dec 2022 10:15:14 -0800
From:   Ira Weiny <ira.weiny@...el.com>
To:     Dan Williams <dan.j.williams@...el.com>
CC:     Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Alison Schofield <alison.schofield@...el.com>,
        "Vishal Verma" <vishal.l.verma@...el.com>,
        Davidlohr Bueso <dave@...olabs.net>,
        "Dave Jiang" <dave.jiang@...el.com>,
        <linux-kernel@...r.kernel.org>, <linux-pci@...r.kernel.org>,
        <linux-acpi@...r.kernel.org>, <linux-cxl@...r.kernel.org>
Subject: Re: [PATCH V4 0/9] CXL: Process event logs

On Fri, Dec 16, 2022 at 09:01:13AM -0800, Dan Williams wrote:
> Jonathan Cameron wrote:
> > On Sun, 11 Dec 2022 23:06:18 -0800
> > ira.weiny@...el.com wrote:
> > 
> > > From: Ira Weiny <ira.weiny@...el.com>
> > > 
> > > This code has been tested with a newer qemu which allows for more events to be
> > > returned at a time as well an additional QMP event and interrupt injection.
> > > Those patches will follow once they have been cleaned up.
> > > 
> > > The series is now in 3 parts:
> > > 
> > > 	1) Base functionality including interrupts
> > > 	2) Tracing specific events (Dynamic Capacity Event Record is defered)
> > > 	3) cxl-test infrastructure for basic tests
> > > 
> > > Changes from V3
> > > 	Feedback from Dan
> > > 	Spit out ACPI changes for Bjorn
> > > 
> > > - Link to v3: https://lore.kernel.org/all/20221208052115.800170-1-ira.weiny@intel.com/
> > 
> > Because I'm in a grumpy mood (as my colleagues will attest!)...
> > This is dependent on the patch that moves the trace definitions and
> > that's not upstream yet except in cxl/preview which is optimistic
> > place to use for a base commit.  The id isn't the one below either which
> > isn't in either mailine or the current CXL trees.
> 
> I do not want to commit to a new baseline until after -rc1, so yes this
> is in a messy period.
> 
> > Not that I actually checked the cover letter until it failed to apply
> > (and hence already knew what was missing) but still, please call out
> > dependencies unless they are in the branches Dan has queued up to push.
> > 
> > I just want to play with Dave's fix for the RAS errors so having to jump
> > through these other sets.
> 
> Yes, that is annoying, apologies.
> 
> > 
> > Thanks,
> > 
> > Jonathan
> > 
> > > 
> > > 
> > > Davidlohr Bueso (1):
> > >   cxl/mem: Wire up event interrupts
> > > 
> > > Ira Weiny (8):
> > >   PCI/CXL: Export native CXL error reporting control
> > >   cxl/mem: Read, trace, and clear events on driver load
> > >   cxl/mem: Trace General Media Event Record
> > >   cxl/mem: Trace DRAM Event Record
> > >   cxl/mem: Trace Memory Module Event Record
> > >   cxl/test: Add generic mock events
> > >   cxl/test: Add specific events
> > >   cxl/test: Simulate event log overflow
> > > 
> > >  drivers/acpi/pci_root.c       |   3 +
> > >  drivers/cxl/core/mbox.c       | 186 +++++++++++++
> > >  drivers/cxl/core/trace.h      | 479 ++++++++++++++++++++++++++++++++++
> > >  drivers/cxl/cxl.h             |  16 ++
> > >  drivers/cxl/cxlmem.h          | 171 ++++++++++++
> > >  drivers/cxl/cxlpci.h          |   6 +
> > >  drivers/cxl/pci.c             | 236 +++++++++++++++++
> > >  drivers/pci/probe.c           |   1 +
> > >  include/linux/pci.h           |   1 +
> > >  tools/testing/cxl/test/Kbuild |   2 +-
> > >  tools/testing/cxl/test/mem.c  | 352 +++++++++++++++++++++++++
> > >  11 files changed, 1452 insertions(+), 1 deletion(-)
> > > 
> > > 
> > > base-commit: acb704099642bc822ef2aed223a0b8db1f7ea76e
> > 
> 
> I think going forward these base-commits need to be something that are
> reachable on cxl.git.

Agreed.  I thought this was in preview.  But even preview is not stable and I
should have waited and asked to see this land in next first.

Ira

> For now I have pushed out a baseline for both Dave
> and Ira's patches to cxl/preview which will rebase after -rc1 comes out.
> 
> Just the small matter of needing some acks/reviews on those lead in
> patches so I can move them to through cxl/pending to cxl/next:
> 
> http://lore.kernel.org/r/167051869176.436579.9728373544811641087.stgit@dwillia2-xfh.jf.intel.com
> http://lore.kernel.org/r/20221212070627.1372402-2-ira.weiny@intel.com