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From: Like Xu <like.xu.linux@gmail.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
	Ingo Molnar <mingo@redhat.com>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 3/5] KVM: x86: Clean up redundant ROL16(val, n) macro definition
Date: Mon,  9 Aug 2021 17:34:08 +0800	[thread overview]
Message-ID: <20210809093410.59304-4-likexu@tencent.com> (raw)
In-Reply-To: <20210809093410.59304-1-likexu@tencent.com>

From: Like Xu <likexu@tencent.com>

The ROL16(val, n) macro is repeatedly defined in several vmcs-related
files, and it has never been used outside the KVM context.

Let's move it to vmcs.h without any intended functional changes.

Signed-off-by: Like Xu <likexu@tencent.com>
---
 arch/x86/kvm/vmx/evmcs.c  | 1 -
 arch/x86/kvm/vmx/evmcs.h  | 4 ----
 arch/x86/kvm/vmx/vmcs.h   | 2 ++
 arch/x86/kvm/vmx/vmcs12.c | 1 -
 arch/x86/kvm/vmx/vmcs12.h | 4 ----
 5 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/arch/x86/kvm/vmx/evmcs.c b/arch/x86/kvm/vmx/evmcs.c
index 896b2a50b4aa..0dab1b7b529f 100644
--- a/arch/x86/kvm/vmx/evmcs.c
+++ b/arch/x86/kvm/vmx/evmcs.c
@@ -14,7 +14,6 @@ DEFINE_STATIC_KEY_FALSE(enable_evmcs);
 
 #if IS_ENABLED(CONFIG_HYPERV)
 
-#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
 #define EVMCS1_OFFSET(x) offsetof(struct hv_enlightened_vmcs, x)
 #define EVMCS1_FIELD(number, name, clean_field)[ROL16(number, 6)] = \
 		{EVMCS1_OFFSET(name), clean_field}
diff --git a/arch/x86/kvm/vmx/evmcs.h b/arch/x86/kvm/vmx/evmcs.h
index 2ec9b46f0d0c..152ab0aa82cf 100644
--- a/arch/x86/kvm/vmx/evmcs.h
+++ b/arch/x86/kvm/vmx/evmcs.h
@@ -73,8 +73,6 @@ struct evmcs_field {
 extern const struct evmcs_field vmcs_field_to_evmcs_1[];
 extern const unsigned int nr_evmcs_1_fields;
 
-#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
-
 static __always_inline int get_evmcs_offset(unsigned long field,
 					    u16 *clean_field)
 {
@@ -95,8 +93,6 @@ static __always_inline int get_evmcs_offset(unsigned long field,
 	return evmcs_field->offset;
 }
 
-#undef ROL16
-
 static inline void evmcs_write64(unsigned long field, u64 value)
 {
 	u16 clean_field;
diff --git a/arch/x86/kvm/vmx/vmcs.h b/arch/x86/kvm/vmx/vmcs.h
index 4b9957e2bf5b..6e5de2e2b0da 100644
--- a/arch/x86/kvm/vmx/vmcs.h
+++ b/arch/x86/kvm/vmx/vmcs.h
@@ -11,6 +11,8 @@
 
 #include "capabilities.h"
 
+#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
+
 struct vmcs_hdr {
 	u32 revision_id:31;
 	u32 shadow_vmcs:1;
diff --git a/arch/x86/kvm/vmx/vmcs12.c b/arch/x86/kvm/vmx/vmcs12.c
index d9f5d7c56ae3..cab6ba7a5005 100644
--- a/arch/x86/kvm/vmx/vmcs12.c
+++ b/arch/x86/kvm/vmx/vmcs12.c
@@ -2,7 +2,6 @@
 
 #include "vmcs12.h"
 
-#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
 #define VMCS12_OFFSET(x) offsetof(struct vmcs12, x)
 #define FIELD(number, name)	[ROL16(number, 6)] = VMCS12_OFFSET(name)
 #define FIELD64(number, name)						\
diff --git a/arch/x86/kvm/vmx/vmcs12.h b/arch/x86/kvm/vmx/vmcs12.h
index 5e0e1b39f495..2a45f026ee11 100644
--- a/arch/x86/kvm/vmx/vmcs12.h
+++ b/arch/x86/kvm/vmx/vmcs12.h
@@ -364,8 +364,6 @@ static inline void vmx_check_vmcs12_offsets(void)
 extern const unsigned short vmcs_field_to_offset_table[];
 extern const unsigned int nr_vmcs12_fields;
 
-#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))
-
 static inline short vmcs_field_to_offset(unsigned long field)
 {
 	unsigned short offset;
@@ -385,8 +383,6 @@ static inline short vmcs_field_to_offset(unsigned long field)
 	return offset;
 }
 
-#undef ROL16
-
 static inline u64 vmcs12_read_any(struct vmcs12 *vmcs12, unsigned long field,
 				  u16 offset)
 {
-- 
2.32.0


  parent reply	other threads:[~2021-08-09  9:34 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-09  9:34 [PATCH 0/5] KVM: x86: Clean up redundant macro definitions Like Xu
2021-08-09  9:34 ` [PATCH 1/5] KVM: x86: Clean up redundant mod_64(x, y) macro definition Like Xu
2021-08-09  9:34 ` [PATCH 2/5] KVM: x86: Clean up redundant CC " Like Xu
2021-08-10 17:47   ` Paolo Bonzini
2021-08-09  9:34 ` Like Xu [this message]
2021-08-10 17:49   ` [PATCH 3/5] KVM: x86: Clean up redundant ROL16(val, n) " Paolo Bonzini
2021-08-09  9:34 ` [PATCH 4/5] KVM: x86: Clean up redundant __ex(x) " Like Xu
2021-08-09  9:34 ` [PATCH 5/5] KVM: x86: Clean up redundant pr_fmt(fmt) macro definition for svm Like Xu
2021-08-10 17:48   ` Paolo Bonzini
2021-08-12 13:00     ` Like Xu
2021-08-09 15:08 ` [PATCH 0/5] KVM: x86: Clean up redundant macro definitions Sean Christopherson

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