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From: Ingo Molnar <mingo@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Juergen Gross <jgross@suse.com>,
	"H . Peter Anvin" <hpa@zytor.com>,
	Dave Hansen <dave.hansen@intel.com>, Xin Li <xin@zytor.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Borislav Petkov <bp@alien8.de>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@kernel.org>
Subject: [PATCH 01/20] x86/msr: Standardize on u64 in <asm/msr.h>
Date: Wed,  9 Apr 2025 22:28:48 +0200	[thread overview]
Message-ID: <20250409202907.3419480-2-mingo@kernel.org> (raw)
In-Reply-To: <20250409202907.3419480-1-mingo@kernel.org>

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>
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>
---
 arch/x86/include/asm/msr.h | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index 9397a319d165..8ee6fc633476 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -48,7 +48,7 @@ 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
@@ -79,7 +79,7 @@ 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);
 
@@ -113,9 +113,9 @@ 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);
 
@@ -125,7 +125,7 @@ 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);
@@ -179,7 +179,7 @@ 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);
 
@@ -196,7 +196,7 @@ 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);
 
@@ -224,7 +224,7 @@ 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);
 
@@ -280,7 +280,7 @@ 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;
 
-- 
2.45.2


  reply	other threads:[~2025-04-09 20:29 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-09 20:28 [PATCH 00/20] x86 MSR in-kernel API type cleanup and rename Ingo Molnar
2025-04-09 20:28 ` Ingo Molnar [this message]
2025-04-09 20:28 ` [PATCH 02/20] x86/msr: Standardize on u64 in <asm/msr-index.h> Ingo Molnar
2025-04-09 20:28 ` [PATCH 03/20] x86/msr: Use u64 in rdmsrl_amd_safe() and wrmsrl_amd_safe() Ingo Molnar
2025-04-09 20:28 ` [PATCH 04/20] x86/msr: Use u64 in rdmsrl_safe() and paravirt_read_pmc() Ingo Molnar
2025-04-09 20:28 ` [PATCH 05/20] x86/msr: Harmonize the prototype and definition of do_trace_rdpmc() Ingo Molnar
2025-04-09 20:28 ` [PATCH 06/20] x86/msr: Standardize on 'u32' MSR indices in <asm/msr.h> Ingo Molnar
2025-04-09 21:55   ` Xin Li
2025-04-10  1:37     ` H. Peter Anvin
2025-04-10  3:18       ` Xin Li
2025-04-10  3:29         ` H. Peter Anvin
2025-04-10  3:53           ` Xin Li
2025-04-10  6:14             ` H. Peter Anvin
2025-04-10  6:34               ` Xin Li
2025-04-10  6:36                 ` H. Peter Anvin
2025-04-10  7:48               ` Peter Zijlstra
2025-04-10  8:53                 ` H. Peter Anvin
2025-04-10 17:45                 ` Xin Li
2025-04-10  6:39             ` Ingo Molnar
2025-04-10  6:52               ` Xin Li
2025-04-10  7:00               ` H. Peter Anvin
2025-04-09 20:28 ` [PATCH 07/20] x86/msr: Rename 'rdmsrl()' to 'rdmsrq()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 08/20] x86/msr: Rename 'wrmsrl()' to 'wrmsrq()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 09/20] x86/msr: Rename 'rdmsrl_safe()' to 'rdmsrq_safe()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 10/20] x86/msr: Rename 'wrmsrl_safe()' to 'wrmsrq_safe()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 11/20] x86/msr: Rename 'rdmsrl_safe_on_cpu()' to 'rdmsrq_safe_on_cpu()' Ingo Molnar
2025-04-09 20:28 ` [PATCH 12/20] x86/msr: Rename 'wrmsrl_safe_on_cpu()' to 'wrmsrq_safe_on_cpu()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 13/20] x86/msr: Rename 'rdmsrl_on_cpu()' to 'rdmsrq_on_cpu()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 14/20] x86/msr: Rename 'wrmsrl_on_cpu()' to 'wrmsrq_on_cpu()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 15/20] x86/msr: Rename 'mce_rdmsrl()' to 'mce_rdmsrq()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 16/20] x86/msr: Rename 'mce_wrmsrl()' to 'mce_wrmsrq()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 17/20] x86/msr: Rename 'rdmsrl_amd_safe()' to 'rdmsrq_amd_safe()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 18/20] x86/msr: Rename 'wrmsrl_amd_safe()' to 'wrmsrq_amd_safe()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 19/20] x86/msr: Rename 'native_wrmsrl()' to 'native_wrmsrq()' Ingo Molnar
2025-04-09 20:29 ` [PATCH 20/20] x86/msr: Rename 'wrmsrl_cstar()' to 'wrmsrq_cstar()' Ingo Molnar
2025-04-10  7:31 ` [PATCH 00/20] x86 MSR in-kernel API type cleanup and rename Peter Zijlstra

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