linux-kernel - [PATCH] genksyms: Handle typeof_unqual keyword and __seg

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Message-ID: <20250413220749.270704-1-ubizjak@gmail.com>
Date: Mon, 14 Apr 2025 00:07:34 +0200
From: Uros Bizjak <ubizjak@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Uros Bizjak <ubizjak@...il.com>,
	Paul Menzel <pmenzel@...gen.mpg.de>,
	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>,
	Borislav Petkov <bp@...en8.de>
Subject: [PATCH] genksyms: Handle typeof_unqual keyword and __seg_{fs,gs} qualifiers

Handle typeof_unqual, __typeof_unqual and __typeof_unqual__ keywords
using TYPEOF_KEYW token in the same way as typeof keyword.

Also ignore x86 __seg_fs and __seg_gs named address space qualifiers
using X86_SEG_KEYW token in the same way as const, volatile or
restrict qualifiers.

Signed-off-by: Uros Bizjak <ubizjak@...il.com>
Reported-by: Paul Menzel <pmenzel@...gen.mpg.de>
Closes: https://lore.kernel.org/lkml/81a25a60-de78-43fb-b56a-131151e1c035@molgen.mpg.de/
Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
---
 scripts/genksyms/keywords.c | 7 +++++++
 scripts/genksyms/parse.y    | 5 ++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/scripts/genksyms/keywords.c b/scripts/genksyms/keywords.c
index b85e0979a00c..ee1499d27061 100644
--- a/scripts/genksyms/keywords.c
+++ b/scripts/genksyms/keywords.c
@@ -17,6 +17,8 @@ static struct resword {
 	{ "__signed__", SIGNED_KEYW },
 	{ "__typeof", TYPEOF_KEYW },
 	{ "__typeof__", TYPEOF_KEYW },
+	{ "__typeof_unqual", TYPEOF_KEYW },
+	{ "__typeof_unqual__", TYPEOF_KEYW },
 	{ "__volatile", VOLATILE_KEYW },
 	{ "__volatile__", VOLATILE_KEYW },
 	{ "__builtin_va_list", VA_LIST_KEYW },
@@ -40,6 +42,10 @@ static struct resword {
 	// KAO. },
 	// { "attribute", ATTRIBUTE_KEYW },
 
+	// X86 named address space qualifiers
+	{ "__seg_gs", X86_SEG_KEYW },
+	{ "__seg_fs", X86_SEG_KEYW },
+
 	{ "auto", AUTO_KEYW },
 	{ "char", CHAR_KEYW },
 	{ "const", CONST_KEYW },
@@ -57,6 +63,7 @@ static struct resword {
 	{ "struct", STRUCT_KEYW },
 	{ "typedef", TYPEDEF_KEYW },
 	{ "typeof", TYPEOF_KEYW },
+	{ "typeof_unqual", TYPEOF_KEYW },
 	{ "union", UNION_KEYW },
 	{ "unsigned", UNSIGNED_KEYW },
 	{ "void", VOID_KEYW },
diff --git a/scripts/genksyms/parse.y b/scripts/genksyms/parse.y
index ee600a804fa1..efdcf07c4eb6 100644
--- a/scripts/genksyms/parse.y
+++ b/scripts/genksyms/parse.y
@@ -91,6 +91,8 @@ static void record_compound(struct string_list **keyw,
 %token TYPEOF_KEYW
 %token VA_LIST_KEYW
 
+%token X86_SEG_KEYW
+
 %token EXPORT_SYMBOL_KEYW
 
 %token ASM_PHRASE
@@ -292,7 +294,8 @@ type_qualifier_seq:
 	;
 
 type_qualifier:
-	CONST_KEYW | VOLATILE_KEYW
+	X86_SEG_KEYW
+	| CONST_KEYW | VOLATILE_KEYW
 	| RESTRICT_KEYW
 		{ /* restrict has no effect in prototypes so ignore it */
 		  remove_node($1);
-- 
2.42.0