On 28/10/17 12:55, Borislav Petkov wrote: > On Fri, Oct 27, 2017 at 07:25:04PM +0200, Juergen Gross wrote: >>>> This is assuming CPU 0 is the boot cpu. I think you want >>>> boot_cpu_data.cpu_index here or whatever is used on xen to identify the >>>> BSP reliably. >>> >>> It seems both PV and PVHVM call xen_init_lock_cpu(0) so 0 here is >>> Linux's idea of CPU id, not Xen's. >>> >>> In case Xen's idea is needed xen_vcpu_id mapping should be used. But I >>> don't think it's the case here. >>> >> >> Correct. > > If it is Linux's idea of the BSP, then you need to check against > boot_cpu_data.cpu_index.
The idea is to set the static key on the first call of xen_init_lock_cpu(). As this first call is done with 0 as parameter the correct check is against 0. Juergen _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
