linux-kernel - [tip: x86/urgent] x86/Kconfig: Reenable PTDUMP on i386

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Message-ID: <175855371001.709179.12697961090213182246.tip-bot2@tip-bot2>
Date: Mon, 22 Sep 2025 15:08:29 -0000
From: "tip-bot2 for Alexander Popov" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Alexander Popov <alex.popov@...ux.com>,
 "Borislav Petkov (AMD)" <bp@...en8.de>, stable@...r.kernel.org,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: x86/urgent] x86/Kconfig: Reenable PTDUMP on i386

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

Commit-ID:     4f115596133fa168bac06bb34c6efd8f4d84c22e
Gitweb:        https://git.kernel.org/tip/4f115596133fa168bac06bb34c6efd8f4d84c22e
Author:        Alexander Popov <alex.popov@...ux.com>
AuthorDate:    Sun, 21 Sep 2025 23:58:15 +03:00
Committer:     Borislav Petkov (AMD) <bp@...en8.de>
CommitterDate: Mon, 22 Sep 2025 14:40:17 +02:00

x86/Kconfig: Reenable PTDUMP on 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.

Move CONFIG_ARCH_HAS_PTDUMP back to "config X86" to fix it.

  [ bp: Massage commit message. ]

Fixes: f9aad622006bd64c ("mm: rename GENERIC_PTDUMP and PTDUMP_CORE")
Signed-off-by: Alexander Popov <alex.popov@...ux.com>
Signed-off-by: Borislav Petkov (AMD) <bp@...en8.de>
Cc: stable@...r.kernel.org
---
 arch/x86/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 52c8910..0588030 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