On Thu, 31 Aug 2006 18:46:51 +0400
"Vitaly Wool" <[EMAIL PROTECTED]> wrote:
> Hello folks,
>
> I've come across the following problem on my PowerPC target (Sandpoint).
> When I set a breakpoint via kgdb to sys_sync() it survives only the
> first call. I. e. I can continue debugging session, but when sys_sync
> is called the second time, no break occurs and the target seems ti be
> hanging silently.
Seems like the patch inlined below is fixing the problem described, though I'm
not sure if that's the right way to go...
Vitaly
Index: powerpc.git/arch/powerpc/mm/fault.c
===================================================================
--- powerpc.git.orig/arch/powerpc/mm/fault.c
+++ powerpc.git/arch/powerpc/mm/fault.c
@@ -175,6 +176,13 @@ int __kprobes do_page_fault(struct pt_re
is_write = error_code & ESR_DST;
#endif /* CONFIG_4xx || CONFIG_BOOKE */
+#ifdef CONFIG_KGDB
+ if (atomic_read(&debugger_active) && kgdb_may_fault)
+ /* Restore our previous state. */
+ kgdb_fault_longjmp(kgdb_fault_jmp_regs);
+ /* Not reached. */
+#endif
+
if (notify_page_fault(DIE_PAGE_FAULT, "page_fault", regs, error_code,
11, SIGSEGV) == NOTIFY_STOP)
return 0;
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