Re: [PATCH v7 2/5] x86/kvm: Change print code to use pr_*() format

[Sean Christopherson <sean.j.christopherson@intel.com>]

On Mon, Oct 21, 2019 at 05:11:13PM +0800, Zhenzhong Duan wrote:
> pr_*() is preferred than printk(KERN_* ...), after change all the print
> in arch/x86/kernel/kvm.c will have "kvm_guest: xxx" style.
> 
> No functional change.
> 
> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
> Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Radim Krcmar <rkrcmar@redhat.com>
> Cc: Sean Christopherson <sean.j.christopherson@intel.com>
> Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
> Cc: Wanpeng Li <wanpengli@tencent.com>
> Cc: Jim Mattson <jmattson@google.com>
> Cc: Joerg Roedel <joro@8bytes.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> ---
>  arch/x86/kernel/kvm.c | 30 ++++++++++++++++--------------
>  1 file changed, 16 insertions(+), 14 deletions(-)
> 
> diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
> index 3bc6a266..249f14a 100644
> --- a/arch/x86/kernel/kvm.c
> +++ b/arch/x86/kernel/kvm.c
> @@ -7,6 +7,8 @@
>   *   Authors: Anthony Liguori <aliguori@us.ibm.com>
>   */
>  
> +#define pr_fmt(fmt) "kvm_guest: " fmt

Sort of a silly nit, especially since I suggested kvm_guest...

What about using kvm-guest instead of kvm_guest to be consistent with
kvm-clock, the other prolific logger in a KVM guest.

E.g.

  kvm-clock: cpu 1, msr 551e041, secondary cpu clock
  kvm-guest: setup async PF for cpu 1
  kvm-guest: stealtime: cpu 1, msr 277695f40
  kvm-clock: cpu 2, msr 551e081, secondary cpu clock
  kvm-guest: setup async PF for cpu 2
  kvm-guest: stealtime: cpu 2, msr 277715f40
  kvm-clock: cpu 3, msr 551e0c1, secondary cpu clock
  kvm-guest: setup async PF for cpu 3
  kvm-guest: stealtime: cpu 3, msr 277795f40
  kvm-clock: cpu 4, msr 551e101, secondary cpu clock
  
instead of

  kvm-clock: cpu 1, msr 551e041, secondary cpu clock
  kvm_guest: setup async PF for cpu 1
  kvm_guest: stealtime: cpu 1, msr 277695f40
  kvm-clock: cpu 2, msr 551e081, secondary cpu clock
  kvm_guest: setup async PF for cpu 2
  kvm_guest: stealtime: cpu 2, msr 277715f40
  kvm-clock: cpu 3, msr 551e0c1, secondary cpu clock
  kvm_guest: setup async PF for cpu 3
  kvm_guest: stealtime: cpu 3, msr 277795f40
  kvm-clock: cpu 4, msr 551e101, secondary cpu clock