From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E67B8C982ED for ; Mon, 21 Sep 2026 10:57:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=MnRmf2O5+VrUhbY9DS+v4YyFBOjezAQOd1QlqmwpXXI=; b=NcFxi6SnedX51I YpiPbSsbNT4TjtXOL/Q4KLekSAHx3iPF/ziTQq39djlo/8d+2KGpfhzpOr6f4O+JK3qL1kBzIilXv Db34tQeBraVCMcXsR7/4QV/NnvTjDHyMlCCW6A9pZHRoULQpt6kr/ApKyooPd6QAFOuKwbM89mSrx dpBuER0m4Z5qgt956r3EjRe9dN1Tgct706n4uG8kuSE74ZqkmK1rx2guNLFjp6h3ymwW2KW9BhDjT OIDSe5MR9b+1ljlEaifidNG6mdwDm6PDeY4BBOJ00s5bX9VIjxN2eDpLjZchTMlvVpy0j9sJrcPG0 HIlGc8ZQ8MAIr+GS0Aqw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x8biN-00000001mJe-2baj; Mon, 21 Sep 2026 10:57:39 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x8biI-00000001mFg-0Ihs; Mon, 21 Sep 2026 10:57:37 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Cc:To:In-Reply-To:References: Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Sender:Reply-To:Content-ID:Content-Description; bh=FVFXVZstIho5EUF9I/u2VieCbkKWILmsKne4F8j83w8=; b=BFaVTQcUl1OcU2wxkGm5NLx1f+ exPgykYbs3TmpiM14l/UzD6UClY/cJByByl6peIvMPD2lEAaoyoF3Gqrsd2vIcW+lEtGbqrNIGsLf KX4xhGYcbfLPm9d/1PV7fT8bMVKkf1jf6WKTbSQVpy58lSIdFxi3cxXLt7OUx2nnJuQDj1A6CEXyW cHMMXIIYKVx/IPByx044onLJWVrz+/sBWAowohzCEYwvNWAm0mjbCFOdRw6u6sJP4658JfnQ0bX7t vnhneQVR8bioFCDMbVVF2Tyj7A7s4KKkmpFYjemJLv/o9s3r5VXeBwQaCK1Vp7ppzxOTpIhyeZnDb fe6n6x3Q==; Received: from foss.arm.com ([217.140.110.172]) by desiato.infradead.org with esmtp (Exim 4.99.2 #2 (Red Hat Linux)) id 1x8biE-0000000C9KX-1Wvy; Mon, 21 Sep 2026 10:57:32 +0000 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 912621CE0; Mon, 21 Sep 2026 03:57:25 -0700 (PDT) Received: from e129823.arm.com (e129823.arm.com [10.2.213.3]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B11E63F86C; Mon, 21 Sep 2026 03:57:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1789988249; bh=ywGIUWe4eG9Fo7o6yUhrB9doRugWRJ87ez63n7dCtOo=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=TG7hL96k21J46PvtLC59HQcHZYmuTxx9rr3LlmBn3clj7nC0IKikp8QCrZXShJiox fJA0U5SPbxEnut2fgoLETk2PoTNcFpOzCPKxMO9mqeqjhO1uEMR7RAtABKtRMHEHQ0 b6ZmFs8B7G0JeikmhUafh8z+0+Is/vD6upLImixU= From: Yeoreum Yun Date: Mon, 21 Sep 2026 11:55:30 +0100 Subject: [PATCH 08/21] mm: vmscan: remove stack copy address of pud/pmd pass in walk_pud/pmd_range() MIME-Version: 1.0 Message-Id: <20260921-dummy_ptxp3-v1-8-cd40cf68242e@arm.com> References: <20260921-dummy_ptxp3-v1-0-cd40cf68242e@arm.com> In-Reply-To: <20260921-dummy_ptxp3-v1-0-cd40cf68242e@arm.com> To: Russell King , Huacai Chen , WANG Xuerui , Thomas Bogendoerfer , Catalin Marinas , Will Deacon , Arnd Bergmann , Andrew Morton , Kairui Song , Qi Zheng , Shakeel Butt , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Johannes Weiner , David Hildenbrand , Michal Hocko , Lorenzo Stoakes , Tianrui Zhao , Bibo Mao , Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonas Bonn , Stefan Kristiansson , Stafford Horne Cc: 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, linux-mm@kvack.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-openrisc@vger.kernel.org, Muhammad Usama Anjum , Yeoreum Yun X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1416; i=yeoreum.yun@arm.com; h=from:subject:message-id; bh=ywGIUWe4eG9Fo7o6yUhrB9doRugWRJ87ez63n7dCtOo=; b=owEB7QES/pANAwAKAW3Vw9FaxTEzAcsmYgBqsQ1ONrk530uquKqsKokVTVRoFTxsseBHhNflE f+mOH3t5ViJAbMEAAEKAB0WIQQtg+CS3QUzuFh1pJ1t1cPRWsUxMwUCarENTgAKCRBt1cPRWsUx M6i5C/4jxR695g+aGeGrIAp5Hq3EK+JsBl4Xkw64Rh+MB3TRHC7oHN9GqMwjA0R8KVzPNX4iDSb opQlxOkF6mlSjUJGYxtqS1/XQG7tmGB0boaY6gUG0tIPmXOnfHwRWhoUKxqSVO71aiHCKtMDHx3 bvrSwgP3w3zc8ggNJdnUy0wQcByFeJFXtAC1548O4Arfhb/ldpChjkVK3Ttsmgib2gqXAlb7o7e 9kQEaAz1xbJx7+O2HbWqlXUHkPJFlrsGFKRoGNPmv+WuUmj9QEtHRlA1kSF54i0Omq+aH1S2gwL 2LgEZ9bPoknyuFN6E9vrtpQYA1cCcuMTcUiDtUbwVryNrTwccRxsgqHoeJstzUoQ56opOp8sTAF Pb7joEtKSjOyjqcbbb/o2KTzQKHOb0DIdBIOTo6cAmoMHyo+NbTIe28IZaY5snJlAQuUdvNKFNo qjJD+aHKgVLGvNKvkeq2VdMiw2jy3gEJ6IWGuxArucd2EPLm46Ivh5Ej3meNBg4nU8tb0= X-Developer-Key: i=yeoreum.yun@arm.com; a=openpgp; fpr=2D83E092DD0533B85875A49D6DD5C3D15AC53133 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260921_115731_243640_DC543E11 X-CRM114-Status: GOOD ( 12.11 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org The behaviour of pXdp_get() will change with generic compile-time folded page tables. To prepare for that, replace passing the address of a stack copy of a pud/pmd to walk_pmd/pte_range() with passing the pud/pmd pointer directly so that makes allowing folded entries to be ignored and check the concurrent access proeprly otherwise pXd_same() would return always true. There should be no functional change. Reviewed-by: Muhammad Usama Anjum Signed-off-by: Yeoreum Yun --- mm/vmscan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 836f50814ffae..f771443cd78b6 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -3871,7 +3871,7 @@ static void walk_pmd_range(pud_t *pud, unsigned long start, unsigned long end, walk->mm_stats[MM_NONLEAF_FOUND]++; - if (!walk_pte_range(&val, addr, next, args)) + if (!walk_pte_range(pmd + i, addr, next, args)) continue; walk->mm_stats[MM_NONLEAF_ADDED]++; @@ -3907,7 +3907,7 @@ static int walk_pud_range(p4d_t *p4d, unsigned long start, unsigned long end, if (!pud_present(val) || WARN_ON_ONCE(pud_leaf(val))) continue; - walk_pmd_range(&val, addr, next, args); + walk_pmd_range(pud + i, addr, next, args); if (need_resched() || walk->batched >= MAX_LRU_BATCH) { end = (addr | ~PUD_MASK) + 1; -- 2.43.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv