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Fail to use bpha on ia32 platform

To: <kdb@xxxxxxxxxxx>
Subject: Fail to use bpha on ia32 platform
From: "Chen, Yukun" <yukun.chen@xxxxxxxxx>
Date: Thu, 4 Nov 2004 16:56:54 +0800
Sender: kdb-bounce@xxxxxxxxxxx
Thread-index: AcTCTDtp0JGnO1Z2T7SzopjIJuFhxg==
Thread-topic: Fail to use bpha on ia32 platform
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@xxxxxxxxx



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