From: Tom Rini <trini@kernel.crashing.org>
To: George Anzinger <george@mvista.com>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [patch 1/3] x86_64: Add a notify_die() call to the "no context" part of do_page_fault()
Date: Tue, 30 Aug 2005 12:53:41 -0700 [thread overview]
Message-ID: <20050830195341.GE3966@smtp.west.cox.net> (raw)
In-Reply-To: <43147237.5030108@mvista.com>
On Tue, Aug 30, 2005 at 07:50:31AM -0700, George Anzinger wrote:
> Tom Rini wrote:
[snip]
> >"no context" is the label we're in, in the code. What it's actually
> >used for is "hey, we (== kgdb) tried to read/write a very very bogus
> >addr, time to longjmp". If it's not true that kgdb is at fault then we
> >drop to the debugger anyhow, and the user can see where they came from.
> >
> No. What the user sees is the offending code (i.e. prior to the trap to
> page_fault), NOT how kgdb happend to be called. The "no_context" is IN
> the _context_ of page_fault, but that is lost by the time you get to
> kgdb and ask to see _why_ (via, hint, hint: "p kgdb_info").
So you're suggesting changing what we pass in so that if we also modify
kgdb_info to contain the 'where' thing you talked about before, it would
be more useful, yes? If so, I think that can wait just a bit. :)
--
Tom Rini
http://gate.crashing.org/~trini/
prev parent reply other threads:[~2005-08-30 19:53 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-29 16:08 [patch 01/16] Add a KGDB core Tom Rini
[not found] ` <1.2982005.trini@kernel.crashing.org>
2005-08-29 16:09 ` [patch 02/16] Add support for i386 platforms to KGDB Tom Rini
2005-08-29 19:55 ` [patch 2/3] x86_64: Run setup_per_cpu_areas and trap_init sooner Andi Kleen
2005-08-29 20:03 ` Tom Rini
2005-08-29 16:09 ` [patch 03/16] Add support for PowerPC32 platforms to KGDB Tom Rini
2005-08-29 16:09 ` [patch 04/16] I/O driver for 8250-compatible UARTs Tom Rini
2005-08-29 16:18 ` Russell King
2005-08-29 16:28 ` Tom Rini
2005-08-31 19:38 ` Bjorn Helgaas
2005-08-31 20:10 ` Tom Rini
2005-08-31 21:03 ` Russell King
2005-08-31 21:23 ` Tom Rini
2005-08-31 21:19 ` Bjorn Helgaas
2005-08-31 22:15 ` Tom Rini
2005-08-29 16:09 ` [patch 05/16] Add support for MIPS platforms to KGDB Tom Rini
2005-08-29 16:10 ` [patch 06/16] Add support for IA64 " Tom Rini
2005-08-29 16:10 ` [patch 07/16] x86_64: Rename KDB_VECTOR to DEBUGGER_VECTOR Tom Rini
2005-08-29 16:10 ` [patch 08/16] Add support for X86_64 platforms to KGDB Tom Rini
2005-08-29 17:13 ` Andi Kleen
2005-08-29 17:45 ` Tom Rini
2005-08-29 18:46 ` Andi Kleen
2005-08-29 18:49 ` Tom Rini
2005-08-29 16:10 ` [patch 09/16] Add support for SuperH " Tom Rini
2005-08-29 16:10 ` [patch 10/16] Add support for ARM " Tom Rini
2005-08-29 16:11 ` [patch 11/16] Add support for PowerPC64 " Tom Rini
2005-08-29 16:11 ` [patch 12/16] KGDBoE I/O driver Tom Rini
2005-08-29 16:11 ` [patch 13/16] Add CFI DWARF2 annotation support Tom Rini
2005-08-29 16:11 ` [patch 14/16] Minor SysRq keyboard bugfix for KGDB Tom Rini
2005-08-29 16:11 ` [patch 15/16] Allow KGDB to work well with loaded modules Tom Rini
2005-08-29 16:12 ` [patch 16/16] Add hardware breakpoint support for i386 Tom Rini
2005-08-29 21:23 ` Andi Kleen
2005-08-31 14:39 ` Tom Rini
2005-08-30 1:06 ` Keith Owens
2005-08-30 7:33 ` [patch 1/3] x86_64: Add a notify_die() call to the "no context" part of do_page_fault() George Anzinger
2005-08-30 14:06 ` Tom Rini
2005-08-30 14:50 ` George Anzinger
2005-08-30 19:53 ` Tom Rini [this message]
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