From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 32302437440; Mon, 13 Jul 2026 14:01:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783951317; cv=none; b=iQkdpv+BpjCZnoqR7zOo+n1jEOreoH27ozcftV7BT0+jTeLJ4kBd6cXYnAHo+2qdo2454xwnTbae5Z2vNhjIteHLm9135PoRSdfBcemPEb5xXuMCJwKUmohUW4REbYahsAwmyHkhJzkD6jJXIdRjHaEpK7mZcK5Vx7aI/KyfETU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783951317; c=relaxed/simple; bh=5txBzx0EcURJkNAuc+8dIy//7Ndx3nQZCeAyxFF+hc8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hu/re7j8K25TPnhEJn6Iehy7GbODV/MY3N0iF0EGhOKYNwQIUKonccSkQSqZP4YpOcGa3Hq2CM3eKeVHX9WpBP6r8do+m0J6KkZ5Ky6gtUgsBn+VhXgjYkQKoJU8rx+CtiTSawizYjMRAs8qx6R+gABqNyStueNJUo/9XIfPy90= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=GhD/Fhhr; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="GhD/Fhhr" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 372552050; Mon, 13 Jul 2026 07:01:51 -0700 (PDT) Received: from e129823.cambridge.arm.com (e129823.arm.com [10.2.213.3]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 4529A3F7B4; Mon, 13 Jul 2026 07:01:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1783951315; bh=5txBzx0EcURJkNAuc+8dIy//7Ndx3nQZCeAyxFF+hc8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GhD/FhhrE7VIh9xgVETVworlnkqkIBeIUJEQQAK4POtvXx3Dj6UMrg8P7fTvYOE8S tRHZozAfzY5mC3R99GiOXD/IpPJuYKpDccI8BcWs77tdxl5v3eW7vdgNYQdTAAdpCQ N2sCBaB0GvonDmslkruANwxq2R7C/YYYXnY6tbF0= From: Yeoreum Yun To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linux-arch@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, x86@kernel.org, linux-mm@kvack.org, kasan-dev@googlegroups.com, linux-csky@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-openrisc@vger.kernel.org Cc: david@kernel.org, linux@armlinux.org.uk, akpm@linux-foundation.org, ankur.a.arora@oracle.com, rppt@kernel.org, linmag7@gmail.com, chleroy@kernel.org, klarasmodin@gmail.com, chenhuacai@kernel.org, kernel@xen0n.name, kas@kernel.org, zhangtianyang@loongson.cn, wangyuli@aosc.io, tsbogend@alpha.franken.de, ljs@kernel.org, jgg@ziepe.ca, catalin.marinas@arm.com, will@kernel.org, arnd@arndb.de, ryan.roberts@arm.com, pasha.tatashin@soleen.com, rmclure@linux.ibm.com, baolin.wang@linux.alibaba.com, tj@kernel.org, kevin.brodsky@arm.com, anup@brainfault.org, atish.patra@linux.dev, pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, hannes@cmpxchg.org, mhocko@kernel.org, qi.zheng@linux.dev, shakeel.butt@linux.dev, kasong@tencent.com, baohua@kernel.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, ryabinin.a.a@gmail.com, glider@google.com, andreyknvl@gmail.com, dvyukov@google.com, vincenzo.frascino@arm.com, anshuman.khandual@arm.com, yang@os.amperecomputing.com, chaitanyas.prakash@arm.com, ardb@kernel.org, guoren@kernel.org, yang.li85200@gmail.com, viro@zeniv.linux.org.uk, dinguyen@kernel.org, schuster.simon@siemens-energy.com, wangruikang@iscas.ac.cn, junhui.liu@pigmoral.tech, muchun.song@linux.dev, vishal.moola@gmail.com, namcao@linutronix.de, pavel@kernel.org, djbw@kernel.org, yu-cheng.yu@intel.com, baolu.lu@linux.intel.com, Jonathan.Cameron@huawei.com, coxu@redhat.com, andreas@gaisler.com, liam@infradead.org, vbabka@kernel.org, surenb@google.com, mhocko@suse.com, geert@linux-m68k.org, shorne@gmail.com, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, Yeoreum Yun Subject: [RFC PATCH 26/34] x86: mm: define pudp_set_access_flags() when CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD is enabled only. Date: Mon, 13 Jul 2026 14:56:05 +0100 Message-ID: <20260713135614.1618183-27-yeoreum.yun@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260713135614.1618183-1-yeoreum.yun@arm.com> References: <20260713135614.1618183-1-yeoreum.yun@arm.com> Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit We want to rework how set_pXd() behaves for generic compile-time folded page tables by disallowing its use and triggering a compile-time error when it is used improperly, ensuring that the actual first-level set_pXd() function is used instead. For this, define pudp_set_access_flags() when CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD is enabled only. Signed-off-by: Yeoreum Yun --- arch/x86/mm/pgtable.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index e4bf6a1d63618..a263625cdcd6b 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -418,6 +418,7 @@ int pmdp_set_access_flags(struct vm_area_struct *vma, return changed; } +#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD int pudp_set_access_flags(struct vm_area_struct *vma, unsigned long address, pud_t *pudp, pud_t entry, int dirty) { @@ -437,6 +438,7 @@ int pudp_set_access_flags(struct vm_area_struct *vma, unsigned long address, return changed; } +#endif /* CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */ #endif bool ptep_test_and_clear_young(struct vm_area_struct *vma, -- LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}