linux-kernel - PCI devices (buses?) and 3GB of RAM lost with 4.2rc1

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Message-ID: <559D836A.4040909@message-id.googlemail.com>
Date:	Wed, 08 Jul 2015 22:09:14 +0200
From:	Stefan Seyfried <stefan.seyfried@...glemail.com>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: PCI devices (buses?) and 3GB of RAM lost with 4.2rc1

Hi all,

this is on a Thinkpad X200s, 5 years old and working fine, until 4.2rc1
came along.

With that booted, I do not have a WiFi card anymore, it doesn't even
appear in "lspci" output.

I only had a 4.0.5 lying around for comparison, so I'm attaching dmesg
from both kernels.
>From diffing the dmesg's, it also looks like I lost some of my RAM:

-Memory: 8050048K/8280176K available (6401K kernel code, 980K rwdata,
4864K rodata, 1532K init, 1516K bss, 230128K reserved, 0K cma-reserved)
+Memory: 5104620K/8280176K available (6823K kernel code, 1096K rwdata,
3220K rodata, 1556K init, 1520K bss, 227792K reserved, 0K cma-reserved)

Does anyone know what's going on here?

Thanks in advance,

	Stefan
-- 
Stefan Seyfried
Linux Consultant & Developer
Mail: seyfried@...systems.de GPG Key: 0x731B665B

B1 Systems GmbH
Osterfeldstraße 7 / 85088 Vohburg / http://www.b1-systems.de
GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt,HRB 3537

View attachment "dmesg-4.0.5.txt" of type "text/plain" (60893 bytes)

View attachment "dmesg-4.2.txt" of type "text/plain" (59117 bytes)