From patchwork Wed Aug 25 16:17:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Elisei X-Patchwork-Id: 12458271 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=-17.5 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,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 45955C4338F for ; Wed, 25 Aug 2021 16:24:16 +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 0D226610E5 for ; Wed, 25 Aug 2021 16:24:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 0D226610E5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=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:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=FnWWLEUabMxautd2ReOsaVjADOw7+terinvNNqJucvs=; b=lglI8s68+m0ZdI WlkITzhNUbmao7Frxu5YjvfP6Xj8mwYlgRa9DximoYA3ks1t222sJjtaAjtV+NiAq642eOz8jIjRn YKsTlmBnpljU+edAC/ILcpXJ8qDmKgtY2DQ3Db6RbDt8G0TlWgoObf5wum4BJeKYc7ByYr4kYfbU4 USDCmGiCrU7yanJyFmqX6dr0SMQ3Zgvi9ChXa3LbD1hpMTGOPDA8/b6XNko/FtZ7lanyT/eESdF1X s3gUNs9grSLIeL+nwQDUUznq5JBkSmUoQia/HtfphofnKHQK79f5GgPum0W983GZFaeyaWDpDSR/Q sqsW7J3wDYnREdVYTemg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIvfo-007jA1-DV; Wed, 25 Aug 2021 16:22:44 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mIvak-007gUm-O3 for linux-arm-kernel@lists.infradead.org; Wed, 25 Aug 2021 16:17:32 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D42CB113E; Wed, 25 Aug 2021 09:17:29 -0700 (PDT) Received: from monolith.cable.virginm.net (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 838793F66F; Wed, 25 Aug 2021 09:17:28 -0700 (PDT) From: Alexandru Elisei To: maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, will@kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v4 11/39] KVM: arm64: Allow userspace to lock and unlock memslots Date: Wed, 25 Aug 2021 17:17:47 +0100 Message-Id: <20210825161815.266051-12-alexandru.elisei@arm.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210825161815.266051-1-alexandru.elisei@arm.com> References: <20210825161815.266051-1-alexandru.elisei@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210825_091730_855553_C0501872 X-CRM114-Status: UNSURE ( 9.71 ) 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 The ioctls have been implemented, allow the userspace to lock and unlock memslots. Signed-off-by: Alexandru Elisei --- arch/arm64/kvm/arm.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index c47e96ae4f7c..4bd4b8b082a4 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -80,11 +80,6 @@ int kvm_arch_check_processor_compat(void *opaque) return 0; } -static int kvm_arm_lock_memslot_supported(void) -{ - return 0; -} - static int kvm_lock_user_memory_region_ioctl(struct kvm *kvm, struct kvm_enable_cap *cap) { @@ -127,8 +122,6 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm, kvm->arch.mte_enabled = true; break; case KVM_CAP_ARM_LOCK_USER_MEMORY_REGION: - if (!kvm_arm_lock_memslot_supported()) - return -EINVAL; r = kvm_lock_user_memory_region_ioctl(kvm, cap); break; default: @@ -306,7 +299,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) r = system_has_full_ptr_auth(); break; case KVM_CAP_ARM_LOCK_USER_MEMORY_REGION: - r = kvm_arm_lock_memslot_supported(); + r = 1; break; default: r = 0;