On Thu, Oct 27, 2016 at 12:38:42PM +0800, Wanpeng Li wrote: ...
> This patch converts x2apic write eoi msr to notrace to avoid the debug > codes splash and reverts irq_enter/irq_exit dance to avoid to make a very > frequent interrupt slower because of debug code. > > Suggested-by: Peter Zijlstra <[email protected]> > Suggested-by: Paolo Bonzini <[email protected]> > Cc: Ingo Molnar <[email protected]> > Cc: Mike Galbraith <[email protected]> > Cc: Peter Zijlstra <[email protected]> > Cc: Thomas Gleixner <[email protected]> > Cc: Paolo Bonzini <[email protected]> > Cc: Borislav Petkov <[email protected]> > Signed-off-by: Wanpeng Li <[email protected]> > --- ... > diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c > index edbbfc8..d230513 100644 > --- a/arch/x86/kernel/kvm.c > +++ b/arch/x86/kernel/kvm.c > @@ -308,7 +308,7 @@ static void kvm_register_steal_time(void) > > static DEFINE_PER_CPU(unsigned long, kvm_apic_eoi) = KVM_PV_EOI_DISABLED; > > -static void kvm_guest_apic_eoi_write(u32 reg, u32 val) > +notrace static void kvm_guest_apic_eoi_write(u32 reg, u32 val) WARNING: storage class should be at the beginning of the declaration #107: FILE: arch/x86/kernel/kvm.c:311: +notrace static void kvm_guest_apic_eoi_write(u32 reg, u32 val) Make sure you integrate checkpatch.pl in your patches creating workflow... -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply.
