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From: Like Xu <like.xu.linux@gmail.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Sean Christopherson <seanjc@google.com>
Cc: kvm@vger.kernel.org, Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Joerg Roedel <joro@8bytes.org>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v2 3/7] KVM: x86: Move kvm_ops_static_call_update() to x86.c
Date: Mon,  8 Nov 2021 19:10:28 +0800	[thread overview]
Message-ID: <20211108111032.24457-4-likexu@tencent.com> (raw)
In-Reply-To: <20211108111032.24457-1-likexu@tencent.com>

From: Like Xu <likexu@tencent.com>

The kvm_ops_static_call_update() is defined in kvm_host.h.
That's completely unnecessary, it should have exactly one caller,
kvm_arch_hardware_setup().  As a prep match, move
kvm_ops_static_call_update() to x86.c, then it can reference
the kvm_pmu_ops stuff.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Like Xu <likexu@tencent.com>
---
 arch/x86/include/asm/kvm_host.h | 8 --------
 arch/x86/kvm/x86.c              | 8 ++++++++
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index c2a4a362f3e2..c2d4ee2973c5 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1536,14 +1536,6 @@ extern struct kvm_x86_ops kvm_x86_ops;
 #define KVM_X86_OP_NULL KVM_X86_OP
 #include <asm/kvm-x86-ops.h>
 
-static inline void kvm_ops_static_call_update(void)
-{
-#define KVM_X86_OP(func) \
-	static_call_update(kvm_x86_##func, kvm_x86_ops.func)
-#define KVM_X86_OP_NULL KVM_X86_OP
-#include <asm/kvm-x86-ops.h>
-}
-
 #define __KVM_HAVE_ARCH_VM_ALLOC
 static inline struct kvm *kvm_arch_alloc_vm(void)
 {
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 775051070627..0aee0a078d6f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -11300,6 +11300,14 @@ void kvm_arch_hardware_disable(void)
 	drop_user_return_notifiers();
 }
 
+static inline void kvm_ops_static_call_update(void)
+{
+#define KVM_X86_OP(func) \
+	static_call_update(kvm_x86_##func, kvm_x86_ops.func)
+#define KVM_X86_OP_NULL KVM_X86_OP
+#include <asm/kvm-x86-ops.h>
+}
+
 int kvm_arch_hardware_setup(void *opaque)
 {
 	struct kvm_x86_init_ops *ops = opaque;
-- 
2.33.0


  parent reply	other threads:[~2021-11-08 11:11 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-08 11:10 [PATCH v2 0/7] Use static_call for kvm_pmu_ops Like Xu
2021-11-08 11:10 ` [PATCH v2 1/7] KVM: x86: Export kvm_pmu_is_valid_msr() for nVMX Like Xu
2021-12-08 17:55   ` Sean Christopherson
2021-11-08 11:10 ` [PATCH v2 2/7] KVM: x86: Fix WARNING that macros should not use a trailing semicolon Like Xu
2021-11-08 11:10 ` Like Xu [this message]
2021-11-08 11:10 ` [PATCH v2 4/7] KVM: x86: Copy kvm_pmu_ops by value to eliminate layer of indirection Like Xu
2021-12-08 18:10   ` Sean Christopherson
2021-11-08 11:10 ` [PATCH v2 5/7] KVM: x86: Move .pmu_ops to kvm_x86_init_ops and tagged as __initdata Like Xu
2021-12-08 18:17   ` Sean Christopherson
2021-11-08 11:10 ` [PATCH v2 6/7] KVM: x86: Introduce definitions to support static calls for kvm_pmu_ops Like Xu
2021-12-08 18:35   ` Sean Christopherson
2021-12-09 12:50     ` Like Xu
2021-11-08 11:10 ` [PATCH v2 7/7] KVM: x86: Use static calls to reduce kvm_pmu_ops overhead Like Xu

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