linux-kernel - Re: [PATCH v2 2/4] tools/testing/cxl: Fix command effects for inject/clear poison

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Message-ID: <20230608120111.00003fd2@Huawei.com>
Date:   Thu, 8 Jun 2023 12:01:11 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Alison Schofield <alison.schofield@...el.com>
CC:     Vishal Verma <vishal.l.verma@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Ben Widawsky <bwidawsk@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        <linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Davidlohr Bueso <dave@...olabs.net>,
        Russ Weight <russell.h.weight@...el.com>
Subject: Re: [PATCH v2 2/4] tools/testing/cxl: Fix command effects for
 inject/clear poison

On Wed, 7 Jun 2023 12:18:55 -0700
Alison Schofield <alison.schofield@...el.com> wrote:

> On Mon, Jun 05, 2023 at 02:20:23PM -0600, Vishal Verma wrote:
> > The CXL spec (3.0, section 8.2.9.8.4) Lists Inject Poison and Clear
> > Poison as having the effects of "Immediate Data Change". Fix this in the
> > mock driver so that the command effect log is populated correctly.
> > 
> > Fixes: 371c16101ee8 ("tools/testing/cxl: Mock the Inject Poison mailbox command")
> > Cc: Alison Schofield <alison.schofield@...el.com>
> > Cc: Dan Williams <dan.j.williams@...el.com>
> > Signed-off-by: Vishal Verma <vishal.l.verma@...el.com>  
> 
> Hi Vishal,
> I took a look at this, wondering if we should promote it as a 6.4 fix.
> I came up with a no. It has no user impact of inject/clear usage in the
> mock driver environment.
> 
> Thanks for fixing!
> Reviewed-by: Alison Schofield <alison.schofield@...el.com>
> 
Agreed on patch and Alison's comment

FWIW

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

> 
> > ---
> >  tools/testing/cxl/test/mem.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c
> > index 34b48027b3de..403cd3608772 100644
> > --- a/tools/testing/cxl/test/mem.c
> > +++ b/tools/testing/cxl/test/mem.c
> > @@ -52,11 +52,11 @@ static struct cxl_cel_entry mock_cel[] = {
> >  	},
> >  	{
> >  		.opcode = cpu_to_le16(CXL_MBOX_OP_INJECT_POISON),
> > -		.effect = cpu_to_le16(0),
> > +		.effect = cpu_to_le16(EFFECT(2)),
> >  	},
> >  	{
> >  		.opcode = cpu_to_le16(CXL_MBOX_OP_CLEAR_POISON),
> > -		.effect = cpu_to_le16(0),
> > +		.effect = cpu_to_le16(EFFECT(2)),
> >  	},
> >  };
> >  
> > 
> > -- 
> > 2.40.1
> >   
>