linux-kernel - [tip: x86/core] x86/msr: Add rdmsrl_on

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Message-ID: <174732509785.406.5208741014442312924.tip-bot2@tip-bot2>
Date: Thu, 15 May 2025 16:04:57 -0000
From: "tip-bot2 for Ingo Molnar" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Stephen Rothwell <sfr@...b.auug.org.au>, Ingo Molnar <mingo@...nel.org>,
 Mario Limonciello <mario.limonciello@....com>,
 "H. Peter Anvin" <hpa@...or.com>, Juergen Gross <jgross@...e.com>,
 Dave Hansen <dave.hansen@...el.com>, Xin Li <xin@...or.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: x86/core] x86/msr: Add rdmsrl_on_cpu() compatibility wrapper

The following commit has been merged into the x86/core branch of tip:

Commit-ID:     baad9190e6465fdbe458f59cf04c2b2032ec4797
Gitweb:        https://git.kernel.org/tip/baad9190e6465fdbe458f59cf04c2b2032ec4797
Author:        Ingo Molnar <mingo@...nel.org>
AuthorDate:    Thu, 15 May 2025 17:49:16 +02:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Thu, 15 May 2025 17:58:55 +02:00

x86/msr: Add rdmsrl_on_cpu() compatibility wrapper

Add a simple rdmsrl_on_cpu() compatibility wrapper for
rdmsrq_on_cpu(), to make life in -next easier, where
the PM tree recently grew more uses of the old API.

Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Acked-by: Mario Limonciello <mario.limonciello@....com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Juergen Gross <jgross@...e.com>
Cc: Dave Hansen <dave.hansen@...el.com>
Cc: Xin Li <xin@...or.com>
Link: https://lore.kernel.org/r/20250512145517.6e0666e3@canb.auug.org.au
---
 arch/x86/include/asm/msr.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index a9ce56f..4096b8a 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -329,6 +329,7 @@ static inline int wrmsr_safe_regs_on_cpu(unsigned int cpu, u32 regs[8])
 /* Compatibility wrappers: */
 #define rdmsrl(msr, val) rdmsrq(msr, val)
 #define wrmsrl(msr, val) wrmsrq(msr, val)
+#define rdmsrl_on_cpu(cpu, msr, q) rdmsrq_on_cpu(cpu, msr, q)

 #endif /* __ASSEMBLER__ */
 #endif /* _ASM_X86_MSR_H */