linux-kernel - Re: [PATCH V13 9/9] cxl/port: Parse out DSMAS data from CDAT table

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Message-ID: <YtB1aE/xUnoeuOtp@iweiny-desk3>
Date:   Thu, 14 Jul 2022 12:58:32 -0700
From:   Ira Weiny <ira.weiny@...el.com>
To:     Dan Williams <dan.j.williams@...el.com>
CC:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Lukas Wunner <lukas@...ner.de>,
        "Alison Schofield" <alison.schofield@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Ben Widawsky <bwidawsk@...nel.org>,
        <linux-kernel@...r.kernel.org>, <linux-cxl@...r.kernel.org>,
        <linux-pci@...r.kernel.org>
Subject: Re: [PATCH V13 9/9] cxl/port: Parse out DSMAS data from CDAT table

On Thu, Jul 14, 2022 at 09:32:03AM -0700, Dan Williams wrote:
> ira.weiny@ wrote:
> > From: Ira Weiny <ira.weiny@...el.com>
> > 
> > CXL Ports with memory devices attached need the information from the
> > Device Scoped Memory Affinity Structure (DSMAS).  This information is
> > contained within the CDAT table buffer which is cached in the port
> > device.
> > 
> > If CDAT data is available, parse and cache DSMAS data from the table.
> > Store this data in unmarshaled struct dsmas data structures for ease of
> > use later.  Ensure DSMAS headers are not malicious or ill formed so as
> > to cause buffer overflow errors.
> > 
> 
> Per patch 6 the parsing needs to move to a refactored version of the
> ACPI table parsing,

I'm not seeing that parsing ATM but I'll figure out what you mean.

> but for now it can just be dropped.

Dropped.
Ira