On Thu, 14 May 2009, K.Prasad wrote:
> 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
^^^^^^
What about providing a dummy definition of hw_breakpoint_disable()
in <asm/hw_breakpoint.h> if !CONFIG_PPC64?
and if you make it safe to always include <asm/hw_breakpoint.h>, you can
get rid of the #ifdef in e.g.
--- linux-2.6-tip.hbkpt.orig/arch/powerpc/kernel/ptrace.c
+++ linux-2.6-tip.hbkpt/arch/powerpc/kernel/ptrace.c
@@ -37,6 +37,9 @@
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/system.h>
+#ifdef CONFIG_PPC64
+#include <asm/hw_breakpoint.h>
+#endif
With kind regards,
Geert Uytterhoeven
Software Architect
Techsoft Centre
Technology and Software Centre Europe
The Corporate Village · Da Vincilaan 7-D1 · B-1935 Zaventem · Belgium
Phone: +32 (0)2 700 8453
Fax: +32 (0)2 700 8622
E-mail: geert.uytterhoe...@sonycom.com
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