linux-kernel - [PATCH v7 27/31] x86/mm: Make INVPCID type macros available to assembly

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Message-ID: <20251114151428.1064524-7-vschneid@redhat.com>
Date: Fri, 14 Nov 2025 16:14:24 +0100
From: Valentin Schneider <vschneid@...hat.com>
To: linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	rcu@...r.kernel.org,
	x86@...nel.org,
	linux-arm-kernel@...ts.infradead.org,
	loongarch@...ts.linux.dev,
	linux-riscv@...ts.infradead.org,
	linux-arch@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andy Lutomirski <luto@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
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	Shrikanth Hegde <sshegde@...ux.ibm.com>
Subject: [PATCH v7 27/31] x86/mm: Make INVPCID type macros available to assembly

A later commit will introduce a pure-assembly INVPCID invocation, allow
assembly files to get the type definitions.

Signed-off-by: Valentin Schneider <vschneid@...hat.com>
---
 arch/x86/include/asm/invpcid.h | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/invpcid.h b/arch/x86/include/asm/invpcid.h
index 734482afbf81d..27ae75c2d7fed 100644
--- a/arch/x86/include/asm/invpcid.h
+++ b/arch/x86/include/asm/invpcid.h
@@ -2,6 +2,13 @@
 #ifndef _ASM_X86_INVPCID
 #define _ASM_X86_INVPCID
 
+#define INVPCID_TYPE_INDIV_ADDR		0
+#define INVPCID_TYPE_SINGLE_CTXT	1
+#define INVPCID_TYPE_ALL_INCL_GLOBAL	2
+#define INVPCID_TYPE_ALL_NON_GLOBAL	3
+
+#ifndef __ASSEMBLER__
+
 static inline void __invpcid(unsigned long pcid, unsigned long addr,
 			     unsigned long type)
 {
@@ -17,11 +24,6 @@ static inline void __invpcid(unsigned long pcid, unsigned long addr,
 		     :: [desc] "m" (desc), [type] "r" (type) : "memory");
 }
 
-#define INVPCID_TYPE_INDIV_ADDR		0
-#define INVPCID_TYPE_SINGLE_CTXT	1
-#define INVPCID_TYPE_ALL_INCL_GLOBAL	2
-#define INVPCID_TYPE_ALL_NON_GLOBAL	3
-
 /* Flush all mappings for a given pcid and addr, not including globals. */
 static inline void invpcid_flush_one(unsigned long pcid,
 				     unsigned long addr)
@@ -47,4 +49,6 @@ static inline void invpcid_flush_all_nonglobals(void)
 	__invpcid(0, 0, INVPCID_TYPE_ALL_NON_GLOBAL);
 }
 
+#endif /* __ASSEMBLER__ */
+
 #endif /* _ASM_X86_INVPCID */
-- 
2.51.0