On Thu, Dec 20, 2012 at 2:38 AM, Zhang, Lin-Bao (Linux Kernel R&D) <linbao.zh...@hp.com> wrote: > I think current core argument is our BIOS did following judgement , > but Linux kernel did not(Linux seems just judge BSP supports x2apic mode or > not by CPUID method)
kernel checks that, if the BSP in x2apic mode, kernel will check if intr-remapping can be enabled, otherwise it will switch back to xapic mode. > Our BSP really supports x2apic mode, however,as this spec, our BIOS think > some of configuration of server > could not meet x2apic conditions ,So didn't place local xAPICs into x2apic > mode. > But linux kernel indeed enable x2apic mode(just believe BSP, didn't do above > judgement) . so this is the conflict. so your BIOS is wrong, it does not enable intr-remapping. Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
