linux-kernel - RE: [PATCH] firmware: export x86_64 platform flash bios region via sysfs

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Date:   Tue, 22 Jun 2021 22:18:29 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Hans-Gert Dahmen' <hans-gert.dahmen@...u.ne>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "philipp.deppenwiese@...u.ne" <philipp.deppenwiese@...u.ne>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Subject: RE: [PATCH] firmware: export x86_64 platform flash bios region via
 sysfs

From: Hans-Gert Dahmen
> Sent: 22 June 2021 15:24
> 
> Make the 16MiB long memory-mapped BIOS region of the platform SPI flash
> on X86_64 system available via /sys/kernel/firmware/flash_mmap/bios_region
> for pen-testing, security analysis and malware detection on kernels
> which restrict module loading and/or access to /dev/mem.

Are you saying that my 15 year old 64bit Athlon cpu and bios
have this large SPI flash and the required hardware to
convert bus cycles to serial spi reads?

I very much doubt it.

	David

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