Re: [PATCH v3] kvm/x86 : Remove redundant function implement

Paolo Bonzini
2020-05-21T13:37:06Z

On 21/05/20 07:57, 彭浩(Richard) wrote:
> pic_in_kernel(),ioapic_in_kernel() and irqchip_kernel() have the
> same implementation.
>
> Signed-off-by: Peng Hao <richard.peng@oppo.com>
> ---
> arch/x86/kvm/ioapic.h | 8 ++------
> arch/x86/kvm/irq.h | 14 ++++----------
> arch/x86/kvm/lapic.c | 1 +
> arch/x86/kvm/mmu/mmu.c | 1 +
> arch/x86/kvm/x86.c | 1 +
> 5 files changed, 9 insertions(+), 16 deletions(-)
>
> diff --git a/arch/x86/kvm/ioapic.h b/arch/x86/kvm/ioapic.h
> index 2fb2e3c..7a3c53b 100644
> --- a/arch/x86/kvm/ioapic.h
> +++ b/arch/x86/kvm/ioapic.h
> @@ -5,7 +5,7 @@
> #include <linux/kvm_host.h>
>
> #include <kvm/iodev.h>
> -
> +#include "irq.h"
> struct kvm;
> struct kvm_vcpu;
>
> @@ -108,11 +108,7 @@ do {\
>
> static inline int ioapic_in_kernel(struct kvm *kvm)
> {
> -int mode = kvm->arch.irqchip_mode;
> -
> -/* Matches smp_wmb() when setting irqchip_mode */
> -smp_rmb();
> -return mode == KVM_IRQCHIP_KERNEL;
> +return irqchip_kernel(kvm);
> }
>
> void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
> diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
> index f173ab6..e133c1a 100644
> --- a/arch/x86/kvm/irq.h
> +++ b/arch/x86/kvm/irq.h
> @@ -16,7 +16,6 @@
> #include <linux/spinlock.h>
>
> #include <kvm/iodev.h>
> -#include "ioapic.h"
> #include "lapic.h"
>
> #define PIC_NUM_PINS 16
> @@ -66,15 +65,6 @@ void kvm_pic_destroy(struct kvm *kvm);
> int kvm_pic_read_irq(struct kvm *kvm);
> void kvm_pic_update_irq(struct kvm_pic *s);
>
> -static inline int pic_in_kernel(struct kvm *kvm)
> -{
> -int mode = kvm->arch.irqchip_mode;
> -
> -/* Matches smp_wmb() when setting irqchip_mode */
> -smp_rmb();
> -return mode == KVM_IRQCHIP_KERNEL;
> -}
> -
> static inline int irqchip_split(struct kvm *kvm)
> {
> int mode = kvm->arch.irqchip_mode;
> @@ -93,6 +83,10 @@ static inline int irqchip_kernel(struct kvm *kvm)
> return mode == KVM_IRQCHIP_KERNEL;
> }
>
> +static inline int pic_in_kernel(struct kvm *kvm)
> +{
> +return irqchip_kernel(kvm);
> +}
> static inline int irqchip_in_kernel(struct kvm *kvm)
> {
> int mode = kvm->arch.irqchip_mode;
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index 9af25c9..de4d046 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -36,6 +36,7 @@
> #include <linux/jump_label.h>
> #include "kvm_cache_regs.h"
> #include "irq.h"
> +#include "ioapic.h"
> #include "trace.h"
> #include "x86.h"
> #include "cpuid.h"
> diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
> index 8071952..6133f69 100644
> --- a/arch/x86/kvm/mmu/mmu.c
> +++ b/arch/x86/kvm/mmu/mmu.c
> @@ -16,6 +16,7 @@
> */
>
> #include "irq.h"
> +#include "ioapic.h"
> #include "mmu.h"
> #include "x86.h"
> #include "kvm_cache_regs.h"
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index d786c7d..c8b62ac 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -18,6 +18,7 @@
>
> #include <linux/kvm_host.h>
> #include "irq.h"
> +#include "ioapic.h"
> #include "mmu.h"
> #include "i8254.h"
> #include "tss.h"
> --
> 2.7.4
>
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Queued, thanks.

Paolo