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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 v5 17/17] x86/msr: Make all MSR access functions __always_inline
Date: Fri, 11 Sep 2026 10:42:11 +0200	[thread overview]
Message-ID: <20260911084211.3149957-18-jgross@suse.com> (raw)
In-Reply-To: <20260911084211.3149957-1-jgross@suse.com>

There are a few MSR access functions left which are not yet marked as
__always_inline. Do the conversion.

Remove a leftover comment no longer being true related to this.

Signed-off-by: Juergen Gross <jgross@suse.com>
---
V4:
- new patch
---
 arch/x86/include/asm/msr.h | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index dbc24550a504..eba325ecfe4c 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -269,13 +269,12 @@ static __always_inline void native_wrmsrq(u32 msr, u64 val)
 	__wrmsrq(msr, val);
 }
 
-static inline int native_read_msr_safe(u32 msr, u64 *val)
+static __always_inline int native_read_msr_safe(u32 msr, u64 *val)
 {
 	return __rdmsr(msr, val, EX_TYPE_RDMSR_SAFE) ? -EIO : 0;
 }
 
-/* Can be uninlined because referenced by paravirt */
-static inline int notrace native_write_msr_safe(u32 msr, u64 val)
+static __always_inline int notrace native_write_msr_safe(u32 msr, u64 val)
 {
 	int err;
 
@@ -301,7 +300,7 @@ static __always_inline int native_wrmsrns_safe(u32 msr, u64 val)
 extern int rdmsr_safe_regs(u32 regs[8]);
 extern int wrmsr_safe_regs(u32 regs[8]);
 
-static inline u64 native_read_pmc(int counter)
+static __always_inline u64 native_read_pmc(int counter)
 {
 	EAX_EDX_DECLARE_ARGS(val, low, high);
 
@@ -363,7 +362,7 @@ static __always_inline u64 rdmsrq(u32 msr)
 }
 
 /* rdmsr with exception handling */
-static inline int rdmsrq_safe(u32 msr, u64 *p)
+static __always_inline int rdmsrq_safe(u32 msr, u64 *p)
 {
 	int err;
 
@@ -375,7 +374,7 @@ static inline int rdmsrq_safe(u32 msr, u64 *p)
 	return err;
 }
 
-static inline void wrmsrq(u32 msr, u64 val)
+static __always_inline void wrmsrq(u32 msr, u64 val)
 {
 	write_msr(msr, val);
 
@@ -384,7 +383,7 @@ static inline void wrmsrq(u32 msr, u64 val)
 }
 
 /* wrmsr with exception handling */
-static inline int wrmsrq_safe(u32 msr, u64 val)
+static __always_inline int wrmsrq_safe(u32 msr, u64 val)
 {
 	int err;
 
-- 
2.55.0


  parent reply	other threads:[~2026-09-11  8:44 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-11  8:41 [PATCH v5 00/17] x86/msr: Inline rdmsr/wrmsr instructions Juergen Gross
2026-09-11  8:41 ` [PATCH v5 01/17] x86/alternative: Support alt_replace_call() with instructions after call Juergen Gross
2026-09-11  8:41 ` [PATCH v5 02/17] coco/tdx: Rename MSR access helpers Juergen Gross
2026-09-11  8:41 ` [PATCH v5 03/17] x86/msr: Minimize usage of native_*() msr access functions Juergen Gross
2026-09-11  8:41 ` [PATCH v5 04/17] x86/msr: Move MSR trace calls one function level up Juergen Gross
2026-09-23 20:26   ` Shreshth Srivastava
2026-09-25 13:15     ` Jürgen Groß
2026-09-11  8:41 ` [PATCH v5 05/17] x86/hyperv: Switch from __rdmsr() to native_rdmsrq() Juergen Gross
2026-09-11  8:42 ` [PATCH v5 06/17] x86/opcode: Add immediate form MSR instructions Juergen Gross
2026-09-11  8:42 ` [PATCH v5 07/17] x86/extable: Add support for " Juergen Gross
2026-09-11  8:42 ` [PATCH v5 08/17] x86/msr: Make wrmsrns() a first class citizen Juergen Gross
2026-09-11  8:42 ` [PATCH v5 09/17] x86/msr: Introduce sync_cpu_after_wrmsrns() Juergen Gross
2026-09-11  8:42 ` [PATCH v5 10/17] x86/msr: Use the alternatives mechanism for RDMSR Juergen Gross
2026-09-11  8:42 ` [PATCH v5 11/17] x86/alternatives: Add ALTERNATIVE_4() Juergen Gross
2026-09-11  8:42 ` [PATCH v5 12/17] x86/paravirt: Split off MSR related hooks into new header Juergen Gross
2026-09-11  8:42 ` [PATCH v5 13/17] x86/paravirt: Prepare support of MSR instruction interfaces Juergen Gross
2026-09-11  8:42 ` [PATCH v5 14/17] x86/paravirt: Switch MSR access pv_ops functions to " Juergen Gross
2026-09-11  8:42 ` [PATCH v5 15/17] x86/msr: Reduce number of low level MSR access helpers Juergen Gross
2026-09-11  8:42 ` [PATCH v5 16/17] x86/paravirt: Use alternatives for MSR access with paravirt Juergen Gross
2026-09-11  8:42 ` Juergen Gross [this message]
2026-09-23 19:36 ` [PATCH v5 00/17] x86/msr: Inline rdmsr/wrmsr instructions Shreshth Srivastava
2026-09-23 20:15   ` Nick Desaulniers
2026-09-25 10:25   ` Jürgen Groß

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