linux-kernel - [PATCH 1/1] x86/Kconfig: Fix PTDUMP and all options that use it on ARCH=i386

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Message-ID: <20250921205819.332773-1-alex.popov@linux.com>
Date: Sun, 21 Sep 2025 23:58:15 +0300
From: Alexander Popov <alex.popov@...ux.com>
To: Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Anshuman Khandual <anshuman.khandual@....com>,
	Kees Cook <kees@...nel.org>,
	H Peter Anvin <hpa@...or.com>,
	Catalin Marinas <catalin.marinas@....com>,
	x86@...nel.org,
	linux-kernel@...r.kernel.org
Cc: notify@...nel.org
Subject: [PATCH 1/1] x86/Kconfig: Fix PTDUMP and all options that use it on ARCH=i386

The commit f9aad622006bd64c ("mm: rename GENERIC_PTDUMP and PTDUMP_CORE")
has broken PTDUMP and the Kconfig options that use it on ARCH=i386,
including CONFIG_DEBUG_WX.

CONFIG_GENERIC_PTDUMP was renamed into CONFIG_ARCH_HAS_PTDUMP, but it was
mistakenly moved from "config X86" to "config X86_64". That made PTDUMP
unavailable for i386.

Let's move CONFIG_ARCH_HAS_PTDUMP back to "config X86" to fix that bug.

Fixes: f9aad622006bd64c ("mm: rename GENERIC_PTDUMP and PTDUMP_CORE")
Cc: stable@...r.kernel.org
Signed-off-by: Alexander Popov <alex.popov@...ux.com>
---
 arch/x86/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 52c8910ba2ef..05880301212e 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -26,7 +26,6 @@ config X86_64
 	depends on 64BIT
 	# Options that are inherently 64-bit kernel only:
 	select ARCH_HAS_GIGANTIC_PAGE
-	select ARCH_HAS_PTDUMP
 	select ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS
 	select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
 	select ARCH_SUPPORTS_PER_VMA_LOCK
@@ -99,6 +98,7 @@ config X86
 	select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
 	select ARCH_HAS_PMEM_API		if X86_64
 	select ARCH_HAS_PREEMPT_LAZY
+	select ARCH_HAS_PTDUMP
 	select ARCH_HAS_PTE_SPECIAL
 	select ARCH_HAS_HW_PTE_YOUNG
 	select ARCH_HAS_NONLEAF_PMD_YOUNG	if PGTABLE_LEVELS > 2
-- 
2.51.0