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From: Juergen Gross <jgross@suse.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: Juergen Gross <jgross@suse.com>,
	Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>
Subject: [PATCH v3 06/11] x86/msr: Remove wrmsr_on_cpu()
Date: Mon,  8 Jun 2026 07:17:36 +0200	[thread overview]
Message-ID: <20260608051741.3207435-7-jgross@suse.com> (raw)
In-Reply-To: <20260608051741.3207435-1-jgross@suse.com>

wrmsr_on_cpu() has no users left. Delete it.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
---
V2:
- delete wrmsr_on_cpu() instead of wrmsrq_on_cpu() (Ingo Molnar)
---
 arch/x86/include/asm/msr.h |  6 ------
 arch/x86/lib/msr-smp.c     | 16 ----------------
 2 files changed, 22 deletions(-)

diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index 6e0d7a6335ff..0205643c1ece 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -256,7 +256,6 @@ int msr_set_bit(u32 msr, u8 bit);
 int msr_clear_bit(u32 msr, u8 bit);
 
 #ifdef CONFIG_SMP
-int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
 int rdmsrq_on_cpu(unsigned int cpu, u32 msr_no, u64 *q);
 int wrmsrq_on_cpu(unsigned int cpu, u32 msr_no, u64 q);
 void rdmsr_on_cpus(const struct cpumask *mask, u32 msr_no, struct msr __percpu *msrs);
@@ -268,11 +267,6 @@ int wrmsrq_safe_on_cpu(unsigned int cpu, u32 msr_no, u64 q);
 int rdmsr_safe_regs_on_cpu(unsigned int cpu, u32 regs[8]);
 int wrmsr_safe_regs_on_cpu(unsigned int cpu, u32 regs[8]);
 #else  /*  CONFIG_SMP  */
-static inline int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
-{
-	wrmsr(msr_no, l, h);
-	return 0;
-}
 static inline int rdmsrq_on_cpu(unsigned int cpu, u32 msr_no, u64 *q)
 {
 	rdmsrq(msr_no, *q);
diff --git a/arch/x86/lib/msr-smp.c b/arch/x86/lib/msr-smp.c
index 65658e8877e6..a434c80408a0 100644
--- a/arch/x86/lib/msr-smp.c
+++ b/arch/x86/lib/msr-smp.c
@@ -46,22 +46,6 @@ int rdmsrq_on_cpu(unsigned int cpu, u32 msr_no, u64 *q)
 }
 EXPORT_SYMBOL(rdmsrq_on_cpu);
 
-int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
-{
-	int err;
-	struct msr_info rv;
-
-	memset(&rv, 0, sizeof(rv));
-
-	rv.msr_no = msr_no;
-	rv.reg.l = l;
-	rv.reg.h = h;
-	err = smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 1);
-
-	return err;
-}
-EXPORT_SYMBOL(wrmsr_on_cpu);
-
 int wrmsrq_on_cpu(unsigned int cpu, u32 msr_no, u64 q)
 {
 	int err;
-- 
2.54.0


  parent reply	other threads:[~2026-06-08  5:18 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-08  5:17 [PATCH v3 00/11] x86/msr: Drop 32-bit variants of *_on_cpu() MSR functions Juergen Gross
2026-06-08  5:17 ` [PATCH v3 01/11] x86/msr: Switch rdmsrl_on_cpu() users to rdmsrq_on_cpu() Juergen Gross
2026-06-08  5:54   ` K Prateek Nayak
2026-06-08  8:03   ` [tip: x86/msr] x86/msr: Switch rdmsrl_on_cpu() user " tip-bot2 for Juergen Gross
2026-06-08  5:17 ` [PATCH v3 02/11] x86/msr: Remove rdmsrl_on_cpu() Juergen Gross
2026-06-08  7:01   ` [PATCH 01.5/11] x86/msr: Switch rdmsrl_on_cpu() user to rdmsrq_on_cpu() Ingo Molnar
2026-06-08  7:11     ` Jürgen Groß
2026-06-08  7:58       ` Ingo Molnar
2026-06-08  8:03   ` [tip: x86/msr] x86/msr: Remove rdmsrl_on_cpu() tip-bot2 for Juergen Gross
2026-06-08  5:17 ` [PATCH v3 03/11] x86/msr: Switch rdmsr_on_cpu() users to rdmsrq_on_cpu() Juergen Gross
2026-06-08  8:03   ` [tip: x86/msr] " tip-bot2 for Juergen Gross
2026-06-08  5:17 ` [PATCH v3 04/11] x86/msr: Remove rdmsr_on_cpu() Juergen Gross
2026-06-08  8:03   ` [tip: x86/msr] " tip-bot2 for Juergen Gross
2026-06-08  5:17 ` [PATCH v3 05/11] x86/msr: Switch wrmsr_on_cpu() users to wrmsrq_on_cpu() Juergen Gross
2026-06-08  8:03   ` [tip: x86/msr] " tip-bot2 for Juergen Gross
2026-06-08  5:17 ` Juergen Gross [this message]
2026-06-08  8:03   ` [tip: x86/msr] x86/msr: Remove wrmsr_on_cpu() tip-bot2 for Juergen Gross
2026-06-08  5:17 ` [PATCH v3 07/11] x86/msr: Don't use rdmsr_safe_on_cpu() in rdmsrq_safe_on_cpu() Juergen Gross
2026-06-08  8:03   ` [tip: x86/msr] " tip-bot2 for Juergen Gross
2026-06-08  5:17 ` [PATCH v3 08/11] x86/msr: Switch rdmsr_safe_on_cpu() users to rdmsrq_safe_on_cpu() Juergen Gross
2026-06-08  8:03   ` [tip: x86/msr] " tip-bot2 for Juergen Gross
2026-06-08  5:17 ` [PATCH v3 09/11] x86/msr: Remove rdmsr_safe_on_cpu() Juergen Gross
2026-06-08  8:03   ` [tip: x86/msr] " tip-bot2 for Juergen Gross
2026-06-08  5:17 ` [PATCH v3 10/11] x86/msr: Switch wrmsr_safe_on_cpu() users to wrmsrq_safe_on_cpu() Juergen Gross
2026-06-08  8:03   ` [tip: x86/msr] " tip-bot2 for Juergen Gross
2026-06-08  5:17 ` [PATCH v3 11/11] x86/msr: Remove wrmsr_safe_on_cpu() Juergen Gross
2026-06-08  8:03   ` [tip: x86/msr] " tip-bot2 for Juergen Gross
2026-06-08  5:59 ` [PATCH v3 00/11] x86/msr: Drop 32-bit variants of *_on_cpu() MSR functions K Prateek Nayak

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