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: 12046653 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=-16.8 required=3.0 tests=BAYES_00, 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 61AE9C433E0 for ; Tue, 26 Jan 2021 13:43:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2A5CD22B3B for ; Tue, 26 Jan 2021 13:43:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404902AbhAZNnT (ORCPT ); Tue, 26 Jan 2021 08:43:19 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:11889 "EHLO szxga07-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404879AbhAZNnB (ORCPT ); Tue, 26 Jan 2021 08:43:01 -0500 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 CC: Mark Rutland , James Morse , Julien Thierry , Suzuki K Poulose , , , , , Yanan Wang 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 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.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,