linux-kernel - [PATCH 04/20] x86/msr: Use u64 in rdmsrl_safe() and paravirt_read

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Message-ID: <20250409202907.3419480-5-mingo@kernel.org>
Date: Wed,  9 Apr 2025 22:28:51 +0200
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Juergen Gross <jgross@...e.com>,
	"H . Peter Anvin" <hpa@...or.com>,
	Dave Hansen <dave.hansen@...el.com>,
	Xin Li <xin@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Borislav Petkov <bp@...en8.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...nel.org>
Subject: [PATCH 04/20] x86/msr: Use u64 in rdmsrl_safe() and paravirt_read_pmc()

The paravirt_read_pmc() result is in fact only loaded into an u64 variable.

Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: Juergen Gross <jgross@...e.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Dave Hansen <dave.hansen@...el.com>
Cc: Xin Li <xin@...or.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
---
 arch/x86/include/asm/paravirt.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index c4c23190925c..c270ca050781 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -231,7 +231,7 @@ static inline void wrmsrl(unsigned msr, u64 val)
 	_err;						\
 })
 
-static inline int rdmsrl_safe(unsigned msr, unsigned long long *p)
+static inline int rdmsrl_safe(unsigned msr, u64 *p)
 {
 	int err;
 
@@ -239,7 +239,7 @@ static inline int rdmsrl_safe(unsigned msr, unsigned long long *p)
 	return err;
 }
 
-static inline unsigned long long paravirt_read_pmc(int counter)
+static inline u64 paravirt_read_pmc(int counter)
 {
 	return PVOP_CALL1(u64, cpu.read_pmc, counter);
 }
-- 
2.45.2