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Subject[PATCH 5/5] mce-inject: allow injecting status=0 to poll handler
We can inject void data to exception handler by writing data with
status=0 and flag=MCE_INJ_EXCEPTION. But without this patch we cannot
do same to poll handler by status=0 and flag=!MCE_INJ_EXCEPTION.

This change will allow us to test behavior of poll handler with no
data.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
---
arch/x86/kernel/cpu/mcheck/mce-inject.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c
index 7691c52..2eeb034 100644
--- a/arch/x86/kernel/cpu/mcheck/mce-inject.c
+++ b/arch/x86/kernel/cpu/mcheck/mce-inject.c
@@ -96,7 +96,7 @@ static int mce_raise_notify(struct notifier_block *self,

if (m->inject_flags & MCE_INJ_EXCEPTION)
raise_exception(m, args->regs);
- else if (m->status)
+ else
raise_poll(m);

return NOTIFY_STOP;
@@ -136,13 +136,12 @@ static int raise_local(void)
ret = -EINVAL;
}
printk(KERN_INFO "MCE exception done on CPU %d\n", cpu);
- } else if (m->status) {
+ } else {
printk(KERN_INFO "Starting machine check poll CPU %d\n", cpu);
raise_poll(m);
mce_notify_irq();
printk(KERN_INFO "Machine check poll done on CPU %d\n", cpu);
- } else
- m->valid = 0;
+ }

return ret;
}
--
1.6.4.3



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