From patchwork Wed Jun 16 09:51:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yanan Wang X-Patchwork-Id: 12324671 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=-16.9 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 7E6A6C48BE5 for ; Wed, 16 Jun 2021 09:54:42 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 5320E610CA for ; Wed, 16 Jun 2021 09:54:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5320E610CA Authentication-Results: mail.kernel.org; dmarc=fail (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=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=82gin2zQewfW/QtWL7ZEoJKeUxRz0aGt5dRFYGgSAgo=; b=PE9/xez7YfEsjj /r2uNduI/XptcuuvrL/FLBeksOwgwJ5A07PwIKBR2DFon5IOuV8Mpkg/d7BzEgrLjiUsgDPQVplnD fGAURfSHzBhHG5A11SavDN3cjpV7CgIPI/QMIE3tiVyNH9O0NRxQ9CDYtPR7NJOEYzFZtMxrXJIS/ 77XOXc2o4tvpEiMcyRsZVxLCeampUe7XzApU5Mj4PivctoK730Gc4rAW3b2tWtBJrDjLy0W7+TrK9 jvoNixn6K4sHkgMDyo1QHpoSTjPWEla1GDGKQ11oYDLrHbkj2uPLmu+lqQGPDpThACYH8BhI8HElA A76U7GJAG9vSGC1xlU8Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ltSER-005fRI-9G; Wed, 16 Jun 2021 09:53:11 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ltSED-005fN3-3W for linux-arm-kernel@lists.infradead.org; Wed, 16 Jun 2021 09:52:59 +0000 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4G4gQ91274z70PJ; Wed, 16 Jun 2021 17:49:37 +0800 (CST) Received: from dggpemm500023.china.huawei.com (7.185.36.83) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 16 Jun 2021 17:52:46 +0800 Received: from DESKTOP-TMVL5KK.china.huawei.com (10.174.187.128) by dggpemm500023.china.huawei.com (7.185.36.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 16 Jun 2021 17:52:45 +0800 From: Yanan Wang To: Marc Zyngier , Will Deacon , "Quentin Perret" , Alexandru Elisei , , , , CC: Catalin Marinas , James Morse , Julien Thierry , "Suzuki K Poulose" , Gavin Shan , , , , Yanan Wang Subject: [PATCH v6 1/4] KVM: arm64: Introduce cache maintenance callbacks for guest stage-2 Date: Wed, 16 Jun 2021 17:51:57 +0800 Message-ID: <20210616095200.38008-2-wangyanan55@huawei.com> X-Mailer: git-send-email 2.8.4.windows.1 In-Reply-To: <20210616095200.38008-1-wangyanan55@huawei.com> References: <20210616095200.38008-1-wangyanan55@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.187.128] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpemm500023.china.huawei.com (7.185.36.83) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210616_025257_351737_4ED8AB75 X-CRM114-Status: UNSURE ( 9.12 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org To prepare for performing guest CMOs in the fault handlers in pgtable.c, introduce two cache maintenance callbacks in struct kvm_pgtable_mm_ops. The new callbacks are specific for guest stage-2, so they will only be initialized in 'struct kvm_pgtable_mm_ops kvm_s2_mm_ops'. Signed-off-by: Yanan Wang Reviewed-by: Fuad Tabba --- arch/arm64/include/asm/kvm_pgtable.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h index c3674c47d48c..302eca32e0af 100644 --- a/arch/arm64/include/asm/kvm_pgtable.h +++ b/arch/arm64/include/asm/kvm_pgtable.h @@ -44,6 +44,11 @@ typedef u64 kvm_pte_t; * in the current context. * @virt_to_phys: Convert a virtual address mapped in the current context * into a physical address. + * @flush_dcache: Clean data cache for a guest page address range before + * creating the corresponding stage-2 mapping. + * @flush_icache: Invalidate instruction cache for a guest page address + * range before creating or updating the corresponding + * stage-2 mapping. */ struct kvm_pgtable_mm_ops { void* (*zalloc_page)(void *arg); @@ -54,6 +59,8 @@ struct kvm_pgtable_mm_ops { int (*page_count)(void *addr); void* (*phys_to_virt)(phys_addr_t phys); phys_addr_t (*virt_to_phys)(void *addr); + void (*flush_dcache)(void *addr, size_t size); + void (*flush_icache)(void *addr, size_t size); }; /**