x86/msr: Standardize on u64 in <asm/msr.h>

JIRA: https://issues.redhat.com/browse/RHEL-118444

commit dfe2574
Author: Ingo Molnar <mingo@kernel.org>
Date:   Wed Apr 9 22:28:48 2025 +0200

    x86/msr: Standardize on u64 in <asm/msr.h>

    There's 9 uses of 'unsigned long long' in <asm/msr.h>, which is
    really the same as 'u64', which is used 34 times.

    Standardize on u64.

    Signed-off-by: Ingo Molnar <mingo@kernel.org>
    Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Cc: Juergen Gross <jgross@suse.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Dave Hansen <dave.hansen@intel.com>
    Cc: Xin Li <xin@zytor.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: David Arcari <darcari@redhat.com>

Author: darcari

arch/x86/include/asm/msr.h

@@ -46,7 +46,7 @@ struct saved_msrs {
 #define EAX_EDX_VAL(val, low, high)	((low) | (high) << 32)
 #define EAX_EDX_RET(val, low, high)	"=a" (low), "=d" (high)
 #else
-#define DECLARE_ARGS(val, low, high)	unsigned long long val
+#define DECLARE_ARGS(val, low, high)	u64 val
 #define EAX_EDX_VAL(val, low, high)	(val)
 #define EAX_EDX_RET(val, low, high)	"=A" (val)
 #endif
@@ -77,7 +77,7 @@ static inline void do_trace_rdpmc(unsigned int msr, u64 val, int failed) {}
  * think of extending them - you will be slapped with a stinking trout or a frozen
  * shark will reach you, wherever you are! You've been warned.
  */
-static __always_inline unsigned long long __rdmsr(unsigned int msr)
+static __always_inline u64 __rdmsr(unsigned int msr)
 {
 	DECLARE_ARGS(val, low, high);
 
@@ -124,9 +124,9 @@ do {							\
 	__wrmsr((msr), (u32)((u64)(val)),		\
 		       (u32)((u64)(val) >> 32))
 
-static inline unsigned long long native_read_msr(unsigned int msr)
+static inline u64 native_read_msr(unsigned int msr)
 {
-	unsigned long long val;
+	u64 val;
 
 	val = __rdmsr(msr);
 
@@ -136,7 +136,7 @@ static inline unsigned long long native_read_msr(unsigned int msr)
 	return val;
 }
 
-static inline unsigned long long native_read_msr_safe(unsigned int msr,
+static inline u64 native_read_msr_safe(unsigned int msr,
 						      int *err)
 {
 	DECLARE_ARGS(val, low, high);
@@ -190,7 +190,7 @@ extern int wrmsr_safe_regs(u32 regs[8]);
  * CPU can and will speculatively execute that RDTSC, though, so the
  * results can be non-monotonic if compared on different CPUs.
  */
-static __always_inline unsigned long long rdtsc(void)
+static __always_inline u64 rdtsc(void)
 {
 	DECLARE_ARGS(val, low, high);
 
@@ -207,7 +207,7 @@ static __always_inline unsigned long long rdtsc(void)
  * be impossible to observe non-monotonic rdtsc_unordered() behavior
  * across multiple CPUs as long as the TSC is synced.
  */
-static __always_inline unsigned long long rdtsc_ordered(void)
+static __always_inline u64 rdtsc_ordered(void)
 {
 	DECLARE_ARGS(val, low, high);
 
@@ -235,7 +235,7 @@ static __always_inline unsigned long long rdtsc_ordered(void)
 	return EAX_EDX_VAL(val, low, high);
 }
 
-static inline unsigned long long native_read_pmc(int counter)
+static inline u64 native_read_pmc(int counter)
 {
 	DECLARE_ARGS(val, low, high);
 
@@ -291,7 +291,7 @@ static inline int wrmsr_safe(unsigned int msr, u32 low, u32 high)
 	__err;							\
 })
 
-static inline int rdmsrl_safe(unsigned int msr, unsigned long long *p)
+static inline int rdmsrl_safe(unsigned int msr, u64 *p)
 {
 	int err;