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    SubjectRe: [PATCH v2 12/12] driver: Google Memory Console
    On 03/14/2011 01:03 PM, Mike Waychison wrote:
    > On Sun, Mar 13, 2011 at 9:54 PM, H. Peter Anvin <> wrote:
    >> On 03/11/2011 05:43 PM, Mike Waychison wrote:
    >>> This patch introduces the 'memconsole' driver.
    >>> Our firmware gives us access to an in-memory log of the firmware's
    >>> output. This gives us visibility in a data-center of headless machines
    >>> as to what the firmware is doing.
    >>> The memory console is found by the driver by finding a header block in
    >>> the EBDA. The buffer is then copied out, and is exported to userland in
    >>> the file /sys/firmware/log.
    >> OK, I really don't like this.
    >> All it has is a 32-bit nonrandom signature, no DMI keying or anything
    >> else to protect it. This really isn't sufficient.
    > Good point. I'll add some DMI strings checks. It *should* be
    > sufficient to just ensure that "Google, Inc." is the board vendor
    > string (though I'll need to run some tests to verify that this covers
    > the boards we care about).

    Sounds good.


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