Modify kexec code to disable DABR registers before a reboot. Adapt the samples
code to populate PPC64-arch specific fields.
Signed-off-by: K.Prasad <pra...@linux.vnet.ibm.com>
---
arch/powerpc/kernel/machine_kexec_64.c | 6
samples/hw_breakpoint/data_breakpoint.c | 4
Index: linux-2.6-tip.hbkpt/arch/powerpc/kernel/machine_kexec_64.c
===================================================================
--- linux-2.6-tip.hbkpt.orig/arch/powerpc/kernel/machine_kexec_64.c
2009-05-14 00:17:24.000000000 +0530
+++ linux-2.6-tip.hbkpt/arch/powerpc/kernel/machine_kexec_64.c 2009-05-14
09:48:09.000000000 +0530
@@ -24,6 +24,7 @@
#include <asm/sections.h> /* _end */
#include <asm/prom.h>
#include <asm/smp.h>
+#include <asm/hw_breakpoint.h>
int default_machine_kexec_prepare(struct kimage *image)
{
@@ -214,6 +215,9 @@
put_cpu();
local_irq_disable();
+#ifdef CONFIG_PPC64
+ hw_breakpoint_disable();
+#endif
}
#else /* ! SMP */
@@ -233,6 +237,9 @@
if (ppc_md.kexec_cpu_down)
ppc_md.kexec_cpu_down(0, 0);
local_irq_disable();
+#ifdef CONFIG_PPC64
+ hw_breakpoint_disable();
+#endif
}
#endif /* SMP */
Index: linux-2.6-tip.hbkpt/samples/hw_breakpoint/data_breakpoint.c
===================================================================
--- linux-2.6-tip.hbkpt.orig/samples/hw_breakpoint/data_breakpoint.c
2009-05-14 00:17:24.000000000 +0530
+++ linux-2.6-tip.hbkpt/samples/hw_breakpoint/data_breakpoint.c 2009-05-14
00:58:06.000000000 +0530
@@ -54,6 +54,10 @@
sample_hbp.info.type = HW_BREAKPOINT_WRITE;
sample_hbp.info.len = HW_BREAKPOINT_LEN_4;
#endif /* CONFIG_X86 */
+#ifdef CONFIG_PPC64
+ sample_hbp.info.name = ksym_name;
+ sample_hbp.info.type = DABR_DATA_WRITE;
+#endif /* CONFIG_PPC64 */
sample_hbp.triggered = (void *)sample_hbp_handler;
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