From: Jason Wessel <jason.wessel@windriver.com>
Date: Fri, 21 May 2010 02:04:30 +0000 (-0500)
Subject: x86,kgdb: Implement early hardware breakpoint debugging
X-Git-Tag: v2.6.35-rc1~452^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=031acd8c42edd61070f81c51edc89e83147a3d0e;p=pandora-kernel.git

x86,kgdb: Implement early hardware breakpoint debugging

It is not possible to use the hw_breakpoint.c API prior to mm_init(),
but it is possible to use hardware breakpoints with the kernel
debugger.

Prior to smp_init() it is possible to simply write to the dr registers
of the boot cpu directly.  This can be used up until the
kgdb_arch_late() is invoked, at which point the standard hw_breakpoint.c
API will get used.

CC: Frederic Weisbecker <fweisbec@gmail.com>
CC: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
---

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