linux-kernel - Re: [PATCH RFC v4 5/6] firmware/efi: Process CXL Component Events

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Message-ID: <65837d4ddfd0_34d57294cb@iweiny-mobl.notmuch>
Date: Wed, 20 Dec 2023 15:48:29 -0800
From: Ira Weiny <ira.weiny@...el.com>
To: Jonathan Cameron <Jonathan.Cameron@...wei.com>, Ira Weiny
	<ira.weiny@...el.com>
CC: Smita Koralahalli <Smita.KoralahalliChannabasappa@....com>, Dan Williams
	<dan.j.williams@...el.com>, Shiju Jose <shiju.jose@...wei.com>, Yazen Ghannam
	<yazen.ghannam@....com>, Davidlohr Bueso <dave@...olabs.net>, Dave Jiang
	<dave.jiang@...el.com>, Alison Schofield <alison.schofield@...el.com>,
	"Vishal Verma" <vishal.l.verma@...el.com>, Ard Biesheuvel <ardb@...nel.org>,
	<linux-efi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-cxl@...r.kernel.org>
Subject: Re: [PATCH RFC v4 5/6] firmware/efi: Process CXL Component Events

Jonathan Cameron wrote:
> On Wed, 13 Dec 2023 14:28:03 -0800
> Ira Weiny <ira.weiny@...el.com> wrote:
> 
> > Jonathan Cameron wrote:
> > > On Wed, 29 Nov 2023 06:28:01 -0800
> > > Ira Weiny <ira.weiny@...el.com> wrote:
> > >   
> > 
> > [snip]
> > 
> > > > > __packed attribute just for cper_cxl_event_rec still fails to properly 
> > > > > align structure elements. Looks like, __packed attribute is needed for 
> > > > > all structs (cper_cxl_event_devid and cper_cxl_event_sn) inside 
> > > > > cper_cxl_event_rec.
> > > > > 
> > > > > Seems easier to use global pragma instead.. I could test and obtain the 
> > > > > output as expected using pragma..    
> > > > 
> > > > I did not know that was acceptable in the kernel but I see you used it in
> > > > cper_cxl.h before...
> > > > 
> > > > Ok I'll do that and spin again.
> > > > 
> > > > Thanks so much for testing this!  I was out last week and still don't have
> > > > a test environment.  
> > > 
> > > Easy to hack into QEMU :)  Hmm. I have a CCIX patch set from years ago
> > > somewhere that does similar. Would be easy to repurposed. Looks like
> > > I never published them (just told people to ask if they wanted them :( ).
> > > 
> > > Anyhow, if useful I can dig them out.  
> > 
> > If you have a branch with them with a somewhat latest qemu that could work
> > too.
> They are ancient and based on GHES emulation that got reworked before being
> merged. I had a quick go at a forwards port but this is a bigger job than
> I expected. May be a little while :(
> 

Let's not waste the time on it then.  Dan and I would like to get this
merged in 6.8 if possible.

Ira