Messages in this thread | | | Subject | Re: perf hw in kexeced kernel broken in tip | From | Peter Zijlstra <> | Date | Wed, 01 Dec 2010 20:38:12 +0100 |
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On Wed, 2010-12-01 at 11:23 -0500, Vivek Goyal wrote: > > What does kexec normally do to ensure hardware is left in a sane state? > > Typically calls device_shutdown() and sysdev_shutdown() from > kernel_restart_prepare() to shutdown the devices. > > Also calls machine_shutdown() which depending on architecture can take > care of various things like stopping other cpus, shutting down LAPIC, > disabling IOAPIC, disabling hpet, shutting down IOMMU etc > (native_machine_shutdown()).
So basically there's no sane generic reset callout?
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