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Re: [Xen-devel] [PATCH v2] Fix scheduler crash after s3 resume

On 25/01/13 13:27, Jan Beulich wrote:
On 25.01.13 at 12:56, Tomasz Wroblewski<tomasz.wroblewski@xxxxxxxxxx>  wrote:
I also tried Jan's suggestion of making do_softirq skip its job if we are
resuming, that causes a hang in rcu_barrier(), adding another resume
conditional rcu_barrier() made it progress further but crash elsewhere (don't
remember where exactly, this approach looked a bit like dead end so i
abandoned it quickly)
I didn't say exactly that - for avoiding the hang, you still need to
service the RCU softirq.
Ah sorry. Ok this approach seems to work for avoiding vcpu_wake crash, although I am still getting this occasional crash in acpi_freq_target, same as when I tried Jurgen's suggestion. Not getting call stack captured for that so not sure where's that called from, but will try to pursue it abit.

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