From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 22 Feb 2013 21:09:51 +0000 (-0800)
Subject: x86-64: don't set the early IDT to point directly to 'early_idt_handler'
X-Git-Tag: v3.9-rc1~107
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac630dd98a47b60b27d716758d5f4276cb974662;p=pandora-kernel.git

x86-64: don't set the early IDT to point directly to 'early_idt_handler'

The code requires the use of the proper per-exception-vector stub
functions (set up as the early_idt_handlers[] array - note the 's') that
make sure to set up the error vector number.  This is true regardless of
whether CONFIG_EARLY_PRINTK is set or not.

Why? The stack offset for the comparison of __KERNEL_CS won't be right
otherwise, nor will the new check (from commit 8170e6bed465: "x86,
64bit: Use a #PF handler to materialize early mappings on demand") for
the page fault exception vector.

Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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