From patchwork Tue Jan 26 13:42:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yanan Wang X-Patchwork-Id: 12046619 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59FF6C433DB for ; Tue, 26 Jan 2021 13:44:02 +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 1E16B2223D for ; Tue, 26 Jan 2021 13:44:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1E16B2223D 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+linux-arm-kernel=archiver.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: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=9FwH3UU2oe0S2CxaYGIQDyhAnjhuDw25mmno2hptMWg=; b=KKRNlTqyomNi4mjZGtScE96IY x2p/S6CCWA3v8RK7TFK557X2kObmSnGGseP23v1tt/RgUu4j/Wfl+se7RBaP19nm+VOOztYoR1+7G rUyt2wpUe1qfL4OXM5ySElp6Url7tPNHed8Bhh8PzlffmxNmIitwYMkXvFFNT7qgJYdsV0wDODe0z U9P2FAAw1ktDOlQmqHQzUlz8xZDQqjxx/jl7ZJSL2Ie8Lctq+t/p8n1doCf8yKgdDp+9XC7YyK/zG mihk550xC0Y6yMENO7HpSl6pzALLihNPwOLyHe6il9tL5WZOR88j5G5eNrvo7iLB8uwhnWij+yfXJ 1rGiXJT9g==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l4OcD-0001qM-Pd; Tue, 26 Jan 2021 13:42:41 +0000 Received: from szxga07-in.huawei.com ([45.249.212.35]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l4Obq-0001hj-U8 for linux-arm-kernel@lists.infradead.org; Tue, 26 Jan 2021 13:42:20 +0000 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4DQ7DK21PRz7bHL; Tue, 26 Jan 2021 21:41:05 +0800 (CST) Received: from DESKTOP-TMVL5KK.china.huawei.com (10.174.187.128) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.498.0; Tue, 26 Jan 2021 21:42:08 +0800 From: Yanan Wang To: , , , , Marc Zyngier , Will Deacon , Catalin Marinas Subject: [RFC PATCH v1 3/5] KVM: arm64: Support usage of TTRem in guest stage-2 translation Date: Tue, 26 Jan 2021 21:42:00 +0800 Message-ID: <20210126134202.381996-4-wangyanan55@huawei.com> X-Mailer: git-send-email 2.8.4.windows.1 In-Reply-To: <20210126134202.381996-1-wangyanan55@huawei.com> References: <20210126134202.381996-1-wangyanan55@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.187.128] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210126_084219_285275_C1FDEF82 X-CRM114-Status: GOOD ( 11.00 ) 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: Mark Rutland , Suzuki K Poulose , Yanan Wang , yezengruan@huawei.com, James Morse , yuzenghui@huawei.com, wanghaibin.wang@huawei.com, zhukeqian1@huawei.com, Julien Thierry Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org As TTrem can be used when coalesce existing table mappings into a block in guest stage-2 translation, so just support usage of it. Signed-off-by: Yanan Wang --- arch/arm64/kvm/hyp/pgtable.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c index 4d177ce1d536..c8b959e3951b 100644 --- a/arch/arm64/kvm/hyp/pgtable.c +++ b/arch/arm64/kvm/hyp/pgtable.c @@ -437,6 +437,7 @@ struct stage2_map_data { struct kvm_s2_mmu *mmu; struct kvm_mmu_memory_cache *memcache; + u32 ttrem_level; }; static int stage2_map_set_prot_attr(enum kvm_pgtable_prot prot, @@ -633,6 +634,7 @@ int kvm_pgtable_stage2_map(struct kvm_pgtable *pgt, u64 addr, u64 size, .phys = ALIGN_DOWN(phys, PAGE_SIZE), .mmu = pgt->mmu, .memcache = mc, + .ttrem_level = system_support_level_of_ttrem(), }; struct kvm_pgtable_walker walker = { .cb = stage2_map_walker,