RE: [Fault-injection-developer] LKML threads about kprobes

[Zhuang, L. <lou...@in...>]

Yes, It is not enough. FITH needs capture pagefault exception in
interrept-disabled condition, just as kprobes for do_int3/do_debug. 
-----Original Message-----
From: Lynch, Rusty 
Sent: Friday, November 08, 2002 9:02 AM
To: Zhuang, Louis; Lynch, Rusty; 'fau...@so...'
Subject: RE: [Fault-injection-developer] LKML threads about kprobes


Ok, now I'm confused.  With kprobes you can register to have a handler
called before a specific address is executed.  Why is that not enough?
 
    -rusty
-----Original Message-----
From: Zhuang, Louis 
Sent: Thursday, November 07, 2002 4:48 PM
To: Lynch, Rusty; 'fau...@so...'
Subject: RE: [Fault-injection-developer] LKML threads about kprobes


Hi, Rusty
    We did work based on kprobes. After we investigated kprobes, we found
kprobes had removed GKHI support. So we need to find another way to get
additional control in exception handling... This is a problem we need to
solve in 2.5.x
-----Original Message-----
From: Lynch, Rusty 
Sent: Friday, November 08, 2002 1:30 AM
To: Zhuang, Louis; 'fau...@so...'
Subject: RE: [Fault-injection-developer] LKML threads about kprobes


It looks to me like kprobes will make it in the kernel.  Why don't we work
under that assumption for now.
 
    -rusty
-----Original Message-----
From: Zhuang, Louis [mailto:lou...@in...]
Sent: Thursday, November 07, 2002 12:27 AM
To: 'fau...@so...'
Subject: RE: [Fault-injection-developer] LKML threads about kprobes


Humm... kprobes in 2.5.x removed GKHI(General Kernel Hook Interface)
mechanism, which FITH needed. But all kprobes patch in 2.5.x is useful for
FITH, such as do_int3/do_debug interrupt gate. We need a mederate patch to
hook these exception for FITH. But I wonder if this can be accepted by LKML.
Any comments
    -Louis