Re: [PATCH v2 12/12] driver: Google Memory Console

[H. Peter Anvin]

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.

	-hpa
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