[PATCH v3 15/16] x86/msr: Reduce number of low level MSR access helpers

[Juergen Gross]

Some MSR access helpers are redundant now, so remove the no longer
needed ones.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 arch/x86/include/asm/msr.h  | 15 ++-------------
 arch/x86/xen/enlighten_pv.c |  4 ++--
 2 files changed, 4 insertions(+), 15 deletions(-)

diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index 66f57265f2f8..84e82c0bb9b1 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -272,22 +272,11 @@ static __always_inline void native_wrmsr(u32 msr, u32 low, u32 high)
 	native_wrmsrq(msr, (u64)high << 32 | low);
 }
 
-static inline u64 native_read_msr(u32 msr)
-{
-	return native_rdmsrq(msr);
-}
-
 static inline int native_read_msr_safe(u32 msr, u64 *val)
 {
 	return __rdmsr(msr, val, EX_TYPE_RDMSR_SAFE) ? -EIO : 0;
 }
 
-/* Can be uninlined because referenced by paravirt */
-static inline void notrace native_write_msr(u32 msr, u64 val)
-{
-	native_wrmsrq(msr, val);
-}
-
 /* Can be uninlined because referenced by paravirt */
 static inline int notrace native_write_msr_safe(u32 msr, u64 val)
 {
@@ -312,7 +301,7 @@ static inline u64 native_read_pmc(int counter)
 #else
 static __always_inline u64 read_msr(u32 msr)
 {
-	return native_read_msr(msr);
+	return native_rdmsrq(msr);
 }
 
 static __always_inline int read_msr_safe(u32 msr, u64 *p)
@@ -322,7 +311,7 @@ static __always_inline int read_msr_safe(u32 msr, u64 *p)
 
 static __always_inline void write_msr(u32 msr, u64 val)
 {
-	native_write_msr(msr, val);
+	native_wrmsrq(msr, val);
 }
 
 static __always_inline int write_msr_safe(u32 msr, u64 val)
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index fed312a17033..612a512e2a67 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -1091,7 +1091,7 @@ static u64 xen_do_read_msr(u32 msr, int *err)
 	if (err)
 		*err = native_read_msr_safe(msr, &val);
 	else
-		val = native_read_msr(msr);
+		val = native_rdmsrq(msr);
 
 	switch (msr) {
 	case MSR_IA32_APICBASE:
@@ -1150,7 +1150,7 @@ static void xen_do_write_msr(u32 msr, u64 val, int *err)
 		if (err)
 			*err = native_write_msr_safe(msr, val);
 		else
-			native_write_msr(msr, val);
+			native_wrmsrq(msr, val);
 	}
 }
 
-- 
2.53.0