Fail to use bpha on ia32 platform

Chen, Yukun yukun.chen at intel.com
Thu Nov 4 00:56:54 PST 2004


Hi all
	I fail to use bpha command(kdb v4.4) on SLES9 SP1, ia32
platform. Steps to duplicate:
	1.insmod testkdb.ko
	2.Enter kdb
	3.bpha mydata  datar   (I will access "mydata" in the
module_exit function)
	4.g
	5.rmmod  testkdb 

	I cannot enter kdb after item5 but it is supposed to do so. I
have tried setting h/w breakpoint on a function which will be called in
module_exit but still unable to enter kdb. 

	It is certain that there is h/w debug register on ia32 h/w and
there does be the support for h/w breakpoint in kdb for such platform.
Then, the issue attribute to the OS cannot support h/w breakpoint
handler. Right?

	Thanx.
Aaron

Intel China Software Lab

Tel:  8621-52574545 Ext.1587

E_mail:yukun.chen at intel.com



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