From patchwork Thu Aug 30 16:15:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Will Deacon X-Patchwork-Id: 10582237 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 34BE6920 for ; Thu, 30 Aug 2018 16:16:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 24A0D2C053 for ; Thu, 30 Aug 2018 16:16:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 18F762C0EC; Thu, 30 Aug 2018 16:16:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6FEFC2C053 for ; Thu, 30 Aug 2018 16:16:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=HDaP04Adp6YEruMGUKIliXP1qV61mzWq+09iMHxLWZI=; b=nFRfGFyMBmiH2271HV3mnDeEDL PPK0QSWrmK7d+MrLavLAiom9F1O7rsBlO5EoYDlpUQs5EYxIl/XJi0/dQeOsH9UjTTXFbTUGu5OUI xFwupbiNr7PHJEi3NKXQ1Uexndblbamc0ALQRBfKcNMzpy6ueV43/EeSBoWxcaPu/B3YAq3JR88bE SfjF5ju2HFzAefM7qa0Bu+VD8F23PzGqwl1js8LHJnx6GmOwP0CTH3KV7n6dGqm3OSYphnisOKlBJ 1LXk0bg/njeD8ao2PrlS+UCYTdHnLmPSJTX6f9qpcjsvaTGgLbiZMrL/8V86poNJ9PlbgB80gsveC t3DzTnQQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fvPc2-0004ev-Rq; Thu, 30 Aug 2018 16:16:02 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fvPbz-0004TY-8r for linux-arm-kernel@lists.infradead.org; Thu, 30 Aug 2018 16:16:00 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 0D6E0ED1; Thu, 30 Aug 2018 09:15:49 -0700 (PDT) Received: from edgewater-inn.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id D2D113F738; Thu, 30 Aug 2018 09:15:48 -0700 (PDT) Received: by edgewater-inn.cambridge.arm.com (Postfix, from userid 1000) id 1B6D31AE3610; Thu, 30 Aug 2018 17:16:01 +0100 (BST) From: Will Deacon To: linux-kernel@vger.kernel.org Subject: [PATCH 01/12] arm64: tlb: Use last-level invalidation in flush_tlb_kernel_range() Date: Thu, 30 Aug 2018 17:15:35 +0100 Message-Id: <1535645747-9823-2-git-send-email-will.deacon@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1535645747-9823-1-git-send-email-will.deacon@arm.com> References: <1535645747-9823-1-git-send-email-will.deacon@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180830_091559_353119_16FF1739 X-CRM114-Status: GOOD ( 12.91 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: benh@au1.ibm.com, peterz@infradead.org, catalin.marinas@arm.com, Will Deacon , npiggin@gmail.com, torvalds@linux-foundation.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP flush_tlb_kernel_range() is only ever used to invalidate last-level entries, so we can restrict the scope of the TLB invalidation instruction. Signed-off-by: Will Deacon --- arch/arm64/include/asm/tlbflush.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h index a4a1901140ee..7e2a35424ca4 100644 --- a/arch/arm64/include/asm/tlbflush.h +++ b/arch/arm64/include/asm/tlbflush.h @@ -199,7 +199,7 @@ static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end dsb(ishst); for (addr = start; addr < end; addr += 1 << (PAGE_SHIFT - 12)) - __tlbi(vaae1is, addr); + __tlbi(vaale1is, addr); dsb(ish); isb(); }