linux-kernel - [PATCH v3] kvm/x86 : Remove redundant function implement

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Message-ID: <HKAPR02MB4291D5926EA10B8BFE9EA0D3E0B70@HKAPR02MB4291.apcprd02.prod.outlook.com>
Date:   Thu, 21 May 2020 05:57:49 +0000
From:   彭浩(Richard) <richard.peng@...o.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>
Subject: [PATCH v3] kvm/x86 : Remove redundant function implement

pic_in_kernel(),ioapic_in_kernel() and irqchip_kernel() have the
same implementation.

Signed-off-by: Peng Hao <richard.peng@...o.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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