From: Ingo Molnar <mingo@kernel.org>
Date: Wed, 9 Apr 2025 20:28:51 +0000 (+0200)
Subject: x86/msr: Use u64 in rdmsrl_safe() and paravirt_read_pmc()
X-Git-Tag: v6.16-rc1~195^2~25^2~38
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=cd905826cbc833b7494573998bd1c407dfa7924f;p=linux.git

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@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>
---

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);
 }