linux-kernel - Re: [PATCH V14 7/7] cxl/port: Introduce cxl_cdat

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Message-ID: <20220719174704.0000344e@Huawei.com>
Date:   Tue, 19 Jul 2022 17:47:04 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Dan Williams <dan.j.williams@...el.com>
CC:     <ira.weiny@...el.com>, Bjorn Helgaas <bhelgaas@...gle.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 V14 7/7] cxl/port: Introduce cxl_cdat_valid()

On Fri, 15 Jul 2022 19:26:01 -0700
Dan Williams <dan.j.williams@...el.com> wrote:

> ira.weiny@ wrote:
> > From: Ira Weiny <ira.weiny@...el.com>
> > 
> > The CDAT data is protected by a checksum and should be the proper
> > length.
> > 
> > Introduce cxl_cdat_valid() to validate the data.  While at it check and
> > store the sequence number.  
> 
> I am going to drop this one. Userspace can determine validity when it
> parses it. When the kernel grows a CDAT parser it will rely on the
> standard validation of ACPI-table-like structures from a future
> __acpi_table_parse_entries() derivative for this purpose.

OK, for now I guess.