On Mon, Sep 02, 2013 at 06:42:44PM +0900, HATAYAMA Daisuke wrote: > The reason why I don't lookup BSP flag in MSR is that it's impossible. > To read MSR of some CPU, we need to use rdmsr instruction on the CPU. > However, in case of this issue, the BSP is halting or running in > the kdump 1st kernel. Yes, and on the AP, that flag would be cleared which makes it not a BSP. > A whole explanation is written in the patch description. Those tend to get lost in git history when a bunch of whitespace jerk offs appear ontop. So a nicely written comment in the code could be very helpful. Thanks. -- Regards/Gruss, Boris.
