[tip: x86/mm] x86/mm: Remove now unused SHARED_KERNEL_PMD

[tip-bot2 for Dave Hansen]

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

Commit-ID:     eaa607deb29e0b6fd24b9adf230fbc765f342521
Gitweb:        https://git.kernel.org/tip/eaa607deb29e0b6fd24b9adf230fbc765f342521
Author:        Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
AuthorDate:    Mon, 14 Apr 2025 10:32:44 -07:00
Committer:     Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
CommitterDate: Thu, 17 Apr 2025 10:39:25 -07:00

x86/mm: Remove now unused SHARED_KERNEL_PMD

All the users of SHARED_KERNEL_PMD are gone. Zap it.

Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/all/20250414173244.1125BEC3%40davehans-spike.ostc.intel.com
---
 arch/x86/include/asm/pgtable-2level_types.h | 2 --
 arch/x86/include/asm/pgtable-3level_types.h | 2 --
 arch/x86/include/asm/pgtable_64_types.h     | 2 --
 3 files changed, 6 deletions(-)

diff --git a/arch/x86/include/asm/pgtable-2level_types.h b/arch/x86/include/asm/pgtable-2level_types.h
index 6642542..54690bd 100644
--- a/arch/x86/include/asm/pgtable-2level_types.h
+++ b/arch/x86/include/asm/pgtable-2level_types.h
@@ -18,8 +18,6 @@ typedef union {
 } pte_t;
 #endif	/* !__ASSEMBLER__ */
 
-#define SHARED_KERNEL_PMD	0
-
 #define ARCH_PAGE_TABLE_SYNC_MASK	PGTBL_PMD_MODIFIED
 
 /*
diff --git a/arch/x86/include/asm/pgtable-3level_types.h b/arch/x86/include/asm/pgtable-3level_types.h
index 9759fa0..580b09b 100644
--- a/arch/x86/include/asm/pgtable-3level_types.h
+++ b/arch/x86/include/asm/pgtable-3level_types.h
@@ -27,8 +27,6 @@ typedef union {
 } pmd_t;
 #endif	/* !__ASSEMBLER__ */
 
-#define SHARED_KERNEL_PMD	(!static_cpu_has(X86_FEATURE_PTI))
-
 #define ARCH_PAGE_TABLE_SYNC_MASK	PGTBL_PMD_MODIFIED
 
 /*
diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h
index 5bb782d..e83721d 100644
--- a/arch/x86/include/asm/pgtable_64_types.h
+++ b/arch/x86/include/asm/pgtable_64_types.h
@@ -46,8 +46,6 @@ extern unsigned int ptrs_per_p4d;
 
 #endif	/* !__ASSEMBLER__ */
 
-#define SHARED_KERNEL_PMD	0
-
 #ifdef CONFIG_X86_5LEVEL
 
 /*