"Huang, Ying" <ying.huang at intel.com> writes: > Hi, Vivek, > > On Wed, 2008-05-14 at 16:52 -0400, Vivek Goyal wrote: > [...] >> Ok, I have done some testing on this patch. Currently I have just >> tested switching back and forth between two kernels and it is working for >> me. >> >> Just that I had to put LAPIC and IOAPIC in legacy mode for it to work. Few >> comments/questions are inline. > > It seems that for LAPIC and IOAPIC, there is > lapic_suspend()/lapic_resume() and ioapic_suspend()/ioapic_resume(), > which will be called before/after kexec jump through > device_power_down()/device_power_up(). So, the mechanism for > LAPIC/IOAPIC is there, we may need to check the corresponding > implementation. And if you start with the device shutdown path the code is already there and working. Eric
