From patchwork Thu Jan 25 09:26:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunwu Chan X-Patchwork-Id: 1890609 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=patchwork.ozlabs.org) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TLH9m2XYlz23dy for ; Thu, 25 Jan 2024 21:29:00 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4TLH9l3mMQz3cXs for ; Thu, 25 Jan 2024 21:28:59 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kylinos.cn (client-ip=124.126.103.232; helo=mailgw.kylinos.cn; envelope-from=chentao@kylinos.cn; receiver=lists.ozlabs.org) Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4TLH902wvnz3bZ4 for ; Thu, 25 Jan 2024 21:28:20 +1100 (AEDT) X-UUID: 64fd2d18a7e4437c8889442e3c4bdec7-20240125 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.35,REQID:43234eab-9fd4-4712-a46a-9edd81ef7d9f,IP:20, URL:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTI ON:release,TS:5 X-CID-INFO: VERSION:1.1.35,REQID:43234eab-9fd4-4712-a46a-9edd81ef7d9f,IP:20,UR L:0,TC:0,Content:0,EDM:0,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:5 X-CID-META: VersionHash:5d391d7,CLOUDID:9ff4be7f-4f93-4875-95e7-8c66ea833d57,B ulkID:240125172630BJ3E7V88,BulkQuantity:0,Recheck:0,SF:66|38|24|17|19|44|1 02,TC:nil,Content:0,EDM:-3,IP:-2,URL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,CO L:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD,TF_CID_SPAM_FSI X-UUID: 64fd2d18a7e4437c8889442e3c4bdec7-20240125 Received: from mail.kylinos.cn [(39.156.73.10)] by mailgw (envelope-from ) (Generic MTA) with ESMTP id 2129244633; Thu, 25 Jan 2024 17:26:27 +0800 Received: from mail.kylinos.cn (localhost [127.0.0.1]) by mail.kylinos.cn (NSMail) with SMTP id 454FBE000EB9; Thu, 25 Jan 2024 17:26:27 +0800 (CST) X-ns-mid: postfix-65B22942-199714737 Received: from kernel.. (unknown [172.20.15.234]) by mail.kylinos.cn (NSMail) with ESMTPA id 8E2EDE000EB9; Thu, 25 Jan 2024 17:26:25 +0800 (CST) From: Kunwu Chan To: mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, aneesh.kumar@kernel.org, naveen.n.rao@linux.ibm.com Subject: [PATCH] powerpc/mm: Code cleanup for __hash_page_thp Date: Thu, 25 Jan 2024 17:26:24 +0800 Message-Id: <20240125092624.537564-1-chentao@kylinos.cn> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Kunwu Chan Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" This part was commented from commit 6d492ecc6489 ("powerpc/THP: Add code to handle HPTE faults for hugepages") in about 11 years before. If there are no plans to enable this part code in the future, we can remove this dead code. Signed-off-by: Kunwu Chan --- arch/powerpc/mm/book3s64/hash_hugepage.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/arch/powerpc/mm/book3s64/hash_hugepage.c b/arch/powerpc/mm/book3s64/hash_hugepage.c index c0fabe6c5a12..127a3a2c174b 100644 --- a/arch/powerpc/mm/book3s64/hash_hugepage.c +++ b/arch/powerpc/mm/book3s64/hash_hugepage.c @@ -59,16 +59,6 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid, rflags = htab_convert_pte_flags(new_pmd, flags); -#if 0 - if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE)) { - - /* - * No CPU has hugepages but lacks no execute, so we - * don't need to worry about that case - */ - rflags = hash_page_do_lazy_icache(rflags, __pte(old_pte), trap); - } -#endif /* * Find the slot index details for this ea, using base page size. */