Re: [1/2] 2.6.22-rc5: known regressions with patches

[Arjan van de Ven]

> Kprobes fundamntally disagrees with DEBUG_RODATA, there's no point in 
> "working around it". Better just admit it.

that's wrong. KPROBE fundamentally disagrees with TEXT being read only,
which is a 2.6.22 new "feature".. and a buggy one at that.


the real fix would be something like this instead:

--- linux-2.6.22-rc5/arch/x86_64/mm/init.c.org	2007-06-21 04:20:10.000000000 -0700
+++ linux-2.6.22-rc5/arch/x86_64/mm/init.c	2007-06-21 04:21:01.000000000 -0700
@@ -605,6 +605,11 @@ void mark_rodata_ro(void)
 	if (num_possible_cpus() > 1)
 		start = (unsigned long)_etext;
 #endif
+
+#ifdef CONFIG_KPROBES
+	start = (unsigned long)_etext;
+#endif
+	
 	end = (unsigned long)__end_rodata;
 	start = (start + PAGE_SIZE - 1) & PAGE_MASK;
 	end &= PAGE_MASK;


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