Messages in this thread | | | Date | Wed, 23 Oct 2013 17:28:12 +0800 | From | "“tiejun.chen”" <> | Subject | Re: [v5][PATCH 6/6] book3e/kgdb: Fix a single stgep case of lazy IRQ |
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On 10/19/2013 07:32 AM, Scott Wood wrote: > On Thu, 2013-06-20 at 18:28 +0800, Tiejun Chen wrote: >> When we're in kgdb_singlestep(), we have to work around to get >> thread_info by copying from the kernel stack before calling >> kgdb_handle_exception(), then copying it back afterwards. >> >> But for PPC64, we have a lazy interrupt implementation. So after >> copying thread info frome kernle stack, if we need to replay an >> interrupt, we shouldn't restore that previous backup thread info >> to make sure we can replay an interrupt lately with a proper >> thread info. > > Explain why copying it would be a problem. >
This would be gone away in next version as well :)
Thanks,
Tiejun
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