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From: Luiz Capitulino <luizcap@redhat.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	david@kernel.org, baolin.wang@linux.alibaba.com, ziy@nvidia.com,
	lance.yang@linux.dev
Cc: corbet@lwn.net, tsbogend@alpha.franken.de, maddy@linux.ibm.com,
	mpe@ellerman.id.au, agordeev@linux.ibm.com,
	gerald.schaefer@linux.ibm.com, hca@linux.ibm.com,
	gor@linux.ibm.com, x86@kernel.org, tglx@kernel.org,
	mingo@redhat.com, bp@alien8.de, hughd@google.com,
	dave.hansen@linux.intel.com, djbw@kernel.org,
	vishal.l.verma@intel.com, dave.jiang@intel.com,
	akpm@linux-foundation.org, yintirui@huawei.com, dev.jain@arm.com,
	usama.arif@linux.dev
Subject: [PATCH v7 11/14] x86: move has_transparent_hugepage() out of THP guard
Date: Mon, 31 Aug 2026 23:12:15 -0400	[thread overview]
Message-ID: <9f8cc58ebe0f8365952e2c528f547e1321e1a23d.1788232334.git.luizcap@redhat.com> (raw)
In-Reply-To: <cover.1788232334.git.luizcap@redhat.com>

A future commit will introduce a kernel API to allow for checking if the
CPU supports PMD-sized pages. This API will be based on the
has_transparent_hugepage() implementation but will be orthogonal to THP
and therefore must work when CONFIG_TRANSPARENT_HUGEPAGE=n.

Move its definition out of the THP guard.

Signed-off-by: Luiz Capitulino <luizcap@redhat.com>
---
 arch/x86/include/asm/pgtable.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index d5f4917c1edc..f207e5268918 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -306,12 +306,6 @@ static inline int pud_trans_huge(pud_t pud)
 }
 #endif
 
-#define has_transparent_hugepage has_transparent_hugepage
-static inline int has_transparent_hugepage(void)
-{
-	return boot_cpu_has(X86_FEATURE_PSE);
-}
-
 #ifdef CONFIG_ARCH_SUPPORTS_PMD_PFNMAP
 static inline bool pmd_special(pmd_t pmd)
 {
@@ -337,6 +331,12 @@ static inline pud_t pud_mkspecial(pud_t pud)
 #endif	/* CONFIG_ARCH_SUPPORTS_PUD_PFNMAP */
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
+#define has_transparent_hugepage has_transparent_hugepage
+static inline int has_transparent_hugepage(void)
+{
+	return boot_cpu_has(X86_FEATURE_PSE);
+}
+
 static inline pte_t pte_set_flags(pte_t pte, pteval_t set)
 {
 	pteval_t v = native_pte_val(pte);
-- 
2.55.0


  parent reply	other threads:[~2026-09-01  3:13 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-01  3:12 [PATCH v7 00/14] mm: thp: always enable mTHP support Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 01/14] docs: tmpfs: remove implementation detail reference Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 02/14] mm: shmem: shmem_getattr(): set blksize to highest supported THP order Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 03/14] mm: introduce pgtable_has_pmd_leaves() Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 04/14] drivers: dax: use pgtable_has_pmd_leaves() Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 05/14] drivers: nvdimm: " Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 06/14] mm: debug_vm_pgtable: " Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 07/14] mm: shmem: allow THP support determination at folio allocation time Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 08/14] s390: move has_transparent_hugepage() out of THP guard Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 09/14] powerpc: " Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 10/14] mips: " Luiz Capitulino
2026-09-01 11:42   ` Lance Yang
2026-09-01 19:53     ` Luiz Capitulino
2026-09-01 22:25       ` Thomas Bogendoerfer
2026-09-02 15:12         ` Luiz Capitulino
2026-09-01  3:12 ` Luiz Capitulino [this message]
2026-09-01  3:12 ` [PATCH v7 12/14] treewide: introduce arch_has_pmd_leaves() Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 13/14] mm: replace thp_disabled_by_hw() with pgtable_has_pmd_leaves() Luiz Capitulino
2026-09-01  3:12 ` [PATCH v7 14/14] mm: thp: always enable mTHP support Luiz Capitulino

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