From patchwork Thu Jun 25 08:03:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhenyu Ye X-Patchwork-Id: 11624749 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E340617C5 for ; Thu, 25 Jun 2020 08:05:41 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BA8BC20720 for ; Thu, 25 Jun 2020 08:05:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="gT+ctL94" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BA8BC20720 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version: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:In-Reply-To:References:List-Owner; bh=SLArDuB66RFVxuRlW4FwW8Z9Su9thetxgAkXZ8FapLw=; b=gT+ctL94m/6XU3N9Th5yh880SQ cplmlEQ0hJG6Dy27fzEOnOeqD3RPDBDz6X52Z5kqJy+M22bJn0Eaz77ZdLW8GUdz/Q36dnPlplFtY Mf3fErgfiAgHLz7m/1RW3v8fF/dRrECiuAJR0R+U1XDFxZ87IFc3rjYXk7nPOfTz6/QnHBx75C8TI A1rjqTAItqe1h8v3gyBqeAwBV+V4mMi1aB0nBISmeXxhsiPelVzhNBkFqSi3YPlfU8tjIocHMBrxp 35GMM7ckxz6+WwcvATnH2s60l+yMKesRB3yBMKYDbmrKP7QDUgVl5qmCVC9weKhX4Ap2dnmzws5Fi frNfGstQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1joMrX-0002aR-GI; Thu, 25 Jun 2020 08:03:59 +0000 Received: from szxga05-in.huawei.com ([45.249.212.191] helo=huawei.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1joMrF-0002RB-Oa for linux-arm-kernel@lists.infradead.org; Thu, 25 Jun 2020 08:03:42 +0000 Received: from DGGEMS413-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id F3283E3998D28F9F9FAD; Thu, 25 Jun 2020 16:03:31 +0800 (CST) Received: from DESKTOP-KKJBAGG.china.huawei.com (10.173.220.25) by DGGEMS413-HUB.china.huawei.com (10.3.19.213) with Microsoft SMTP Server id 14.3.487.0; Thu, 25 Jun 2020 16:03:24 +0800 From: Zhenyu Ye To: , , , , , , , , , , , , , , , , Subject: [RESEND PATCH v5 0/6] arm64: tlb: add support for TTL feature Date: Thu, 25 Jun 2020 16:03:08 +0800 Message-ID: <20200625080314.230-1-yezhenyu2@huawei.com> X-Mailer: git-send-email 2.22.0.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.173.220.25] X-CFilter-Loop: Reflected X-Spam-Note: CRM114 invocation failed X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.191 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4) [45.249.212.191 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, yezhenyu2@huawei.com, linux-kernel@vger.kernel.org, xiexiangyou@huawei.com, zhangshaokun@hisilicon.com, linux-mm@kvack.org, arm@kernel.org, prime.zeng@hisilicon.com, kuhn.chenqun@huawei.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org In order to reduce the cost of TLB invalidation, ARMv8.4 provides the TTL field in TLBI instruction. The TTL field indicates the level of page table walk holding the leaf entry for the address being invalidated. This series provide support for this feature. When ARMv8.4-TTL is implemented, the operand for TLBIs looks like below: * +----------+-------+----------------------+ * | ASID | TTL | BADDR | * +----------+-------+----------------------+ * |63 48|47 44|43 0| See patches for details, Thanks. --- ChangeList: v5: rebase the series on Linux 5.8-rc2. v4: implement flush_*_tlb_range only on arm64. v3: minor changes: reduce the indentation levels of __tlbi_level(). v2: rebase series on Linux 5.7-rc1 and simplify the code implementation. v1: add support for TTL feature in arm64. Marc Zyngier (2): arm64: Detect the ARMv8.4 TTL feature arm64: Add level-hinted TLB invalidation helper Peter Zijlstra (Intel) (1): tlb: mmu_gather: add tlb_flush_*_range APIs Zhenyu Ye (3): arm64: Add tlbi_user_level TLB invalidation helper arm64: tlb: Set the TTL field in flush_tlb_range arm64: tlb: Set the TTL field in flush_*_tlb_range arch/arm64/include/asm/cpucaps.h | 3 +- arch/arm64/include/asm/pgtable.h | 10 ++++++ arch/arm64/include/asm/sysreg.h | 1 + arch/arm64/include/asm/tlb.h | 29 +++++++++++++++- arch/arm64/include/asm/tlbflush.h | 54 +++++++++++++++++++++++++----- arch/arm64/kernel/cpufeature.c | 11 +++++++ include/asm-generic/tlb.h | 55 ++++++++++++++++++++++--------- 7 files changed, 138 insertions(+), 25 deletions(-)