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 C85CE437469; Mon, 13 Jul 2026 14:00:15 +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=1783951217; cv=none; b=BECfyUtU2KNVnk7asEIRjZrS+K+os5tynZKrWH2nb1Xz/l0sib5yYT5GPJ1cOQMx233hrEM6m9on+CH5tHdvjOSUl/XY8zr7X84MtZQnEic7uMJ0XHtERHftrSdvNtlCaEmSAxIQTcqo+5GUJaRnXUm74VwhFCz9wsg6XRSoSo0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783951217; c=relaxed/simple; bh=Paq3n4cO8HdYy4FFfkUp6FGCvWu1boCvdBHEQkzpEzo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=J7wOGVpcMnkKQ3ej12ulYcfuYm9HHA6++zuAMuthspMwGLjRaXZrA5aQBiB9TOidxJAI3czqqR2EaZFVPZ9tDn0j6O7+unZ7T3C1vsNEGB+I02F/uqNSrwGQ6mjRRgr/Q9jxH/En9edf77ERTu3lgFF+SnG1HHFwuF1n6aQeGiU= ARC-Authentication-Results:i=1; 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h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=f7EldcMFAotp2m+ZhFGMuVYzDzUE1W3xYD2M61Z32+4Lp6LM2uG0bFpTaMxAUabky GXRnAFeDJZQABUA65JAt+2/I+UMycHxGaMD0oKMyNfBY1Wx5aC0cEO7Fj/aGoXMZAY tYNv5K6voYS794ZDDPyqysxYS3g7IcY1aTIJ4qUY= 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 18/34] riscv: mm: use proper set_pXd() for generic compile-time folded patable in setup_vm_final() Date: Mon, 13 Jul 2026 14:55:57 +0100 Message-ID: <20260713135614.1618183-19-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. Therefore, replace set_pgd() with set_pmd() to setup swapper_pg_dir in setup_vm_final() since PGTABLE_LEVELS is always 2 in CONFIG_32BIT. There should be no functional change. Signed-off-by: Yeoreum Yun --- arch/riscv/mm/init.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 5b1b3c88b4d13..78017edf7c343 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -1264,7 +1264,12 @@ static void __init setup_vm_final(void) */ unsigned long idx = pgd_index(__fix_to_virt(FIX_FDT)); - set_pgd(&swapper_pg_dir[idx], early_pg_dir[idx]); + BUILD_BUG_ON (CONFIG_PGTABLE_LEVELS != 2); + + pmd_t *pmdp_s = (void *)&swapper_pg_dir[idx]; + pmd_t *pmdp = (void *)&early_pg_dir[idx]; + + set_pmd(pmdp_s, pmdp_get(pmdp)); #endif create_pgd_mapping(swapper_pg_dir, FIXADDR_START, __pa_symbol(fixmap_pgd_next), -- LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}