Hi Akio,
A few more comments...
On Mon, 2006-06-12 at 15:08 +0900, Akio Takebe wrote:
> diff -r aa2298739112 xen/arch/ia64/linux-xen/Makefile
> --- a/xen/arch/ia64/linux-xen/Makefile Fri Jun 09 10:40:31 2006 -0600
> +++ b/xen/arch/ia64/linux-xen/Makefile Mon Jun 12 03:21:27 2006 +0900
> @@ -3,6 +3,8 @@ obj-y += irq_ia64.o
> obj-y += irq_ia64.o
> obj-y += mm_contig.o
> obj-y += pal.o
> +obj-y += mca_asm.o
> +obj-y += mca.o
Need a README.origin update too.
> +#include <linux/interrupt.h>
> +#include <linux/irq.h>
> +#ifdef XEN
> +#include <xen/symbols.h>
> +#else
> +#include <linux/kallsyms.h>
> +#endif /* XEN */
> +#include <linux/smp_lock.h>
> +#include <linux/bootmem.h>
> +#include <linux/acpi.h>
> +#include <linux/timer.h>
> +#include <linux/module.h>
> +#include <linux/kernel.h>
> +#include <linux/smp.h>
> +#ifndef XEN
> +#include <linux/workqueue.h>
> +#endif /* !XEN */
I wouldn't bother with the /* XEN */ when there's so little code
between the #ifdef and #endif.
> +#include <asm/delay.h>
> +#include <asm/machvec.h>
> +#include <asm/page.h>
> +#include <asm/ptrace.h>
> +#include <asm/system.h>
> +#include <asm/sal.h>
> +#include <asm/mca.h>
> +
> +#include <asm/irq.h>
> +#include <asm/hw_irq.h>
> +#ifndef XEN
> +#include <asm/crashdump.h>
> +#endif /* !XEN */
> +#ifdef XEN
#else?
> +#ifdef XEN
> + fetch_min_state(ms, pt, sw);
> + spin_lock(&show_stack_lock);
> + show_min_state(ms);
> + printk("Backtrace of current vcpu (vcpu_id %d)\n",
> current->vcpu_id);
> + unw_init_from_interruption(&info, current, pt, sw);
> + ia64_do_show_stack(&info, NULL);
> + unw_init_running(save_ksp, NULL);
> + spin_unlock(&show_stack_lock);
> + wmb();
> + init_cache_flush();
> +
> + if (spin_trylock(&init_dump_lock)){
> +#ifdef CONFIG_SMP
> + udelay(5*1000000);
> +#endif
> +
> + if(try_crashdump(pt) == 0)
> + printk("\nINIT dump complete. Please reboot
> now.\n");
> + }
> + printk("%s: CPU%d init handler done\n",
> __FUNCTION__ ,smp_processor_id());
I'm not completely sure of the leverage we're getting by wedging this
#ifdef XEN section into the existing init_handler_platform() function.
Maybe we should #ifdef out the whole function and make our own for xen?
In fact, the number of non-#ifdef'd out code in both mca.c and
mca_asm.S is fairly small. Are we planning to leverage more code out of
these in the future? I wonder if we'd be ahead to cut and paste the
little bits we are using into xen-specific files(?). Thanks,
Alex
--
Alex Williamson HP Open Source & Linux Org.
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