[tip:x86/nuke386] x86, 386 removal: Document Nx586 as a 386 and thus unsupported

From: tip-bot for H. Peter Anvin
Date: Fri Nov 30 2012 - 19:43:09 EST


Commit-ID: 11af32b69ef7ee64c7d8848cad71a6f3749d9e37
Gitweb: http://git.kernel.org/tip/11af32b69ef7ee64c7d8848cad71a6f3749d9e37
Author: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
AuthorDate: Thu, 29 Nov 2012 13:28:39 -0800
Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Thu, 29 Nov 2012 13:28:39 -0800

x86, 386 removal: Document Nx586 as a 386 and thus unsupported

Per Alan Cox, Nx586 did not support WP in supervisor mode, making it a
386 by Linux kernel standards. As such, it is too unsupported now.

Reported-by: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20121128205203.05868eab@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
arch/x86/Kconfig.cpu | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 423db71..c026cca 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -15,7 +15,7 @@ config M486

Note that the 386 is no longer supported, this includes
AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI 486DLC/DLC2,
- and UMC 486SX-S.
+ UMC 486SX-S and the NexGen Nx586.

The kernel will not necessarily run on earlier architectures than
the one you have chosen, e.g. a Pentium optimized kernel will run on
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