Re: [patch 1/3] x86_64: Add a notify_die() call to the "no context" part of do_page_fault()

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Tom Rini wrote:
CC: Andi Kleen <[email protected]>
This adds a call to notify_die() in the "no context" portion of
do_page_fault() as someone on the chain might care and want to do a fixup.

---

 linux-2.6.13-trini/arch/x86_64/mm/fault.c |    4 ++++
 1 files changed, 4 insertions(+)

diff -puN arch/x86_64/mm/fault.c~x86_64-no_context_hook arch/x86_64/mm/fault.c
--- linux-2.6.13/arch/x86_64/mm/fault.c~x86_64-no_context_hook	2005-08-29 11:09:13.000000000 -0700
+++ linux-2.6.13-trini/arch/x86_64/mm/fault.c	2005-08-29 11:09:13.000000000 -0700
@@ -514,6 +514,10 @@ no_context:
 	if (is_errata93(regs, address))
return; + if (notify_die(DIE_PAGE_FAULT, "no context", regs, error_code, 14,
+				SIGSEGV) == NOTIFY_STOP)
+		return;
+
 /*
  * Oops. The kernel tried to access some bad page. We'll have to
  * terminate things with extreme prejudice.

Please use a more descriptive text than "no context". This bit of info SHOULD be available to the gdb/kgdb user and should indicate why kgdb was entered. It thus should be something like "bad kernel address" or "illegal kernel address".

--
George Anzinger   [email protected]
HRT (High-res-timers):  http://sourceforge.net/projects/high-res-timers/
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