From patchwork Wed Nov 17 15:38:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Elisei X-Patchwork-Id: 12692944 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 341FBC433EF for ; Wed, 17 Nov 2021 15:44:09 +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 EA69360EB4 for ; Wed, 17 Nov 2021 15:44:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org EA69360EB4 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=lb+upxINZ1/PgFH0ueSv/vHX72+N6E71m7mQfaZ2V/8=; b=h+LYY2DEaMl4CS 1o1SE/sUc5SqjCGqtXff5X7CAmndPr7gZAx51pDYK0wsf7lWKpDLx5ZZThuT9IsAwNgzmotgmNl8S q/2W3MWq20Vy4mRgQZ0V0mMbPUPdltasSGeI8WIji6HmW+ThKGml0InX8vy5WpFOX4fmHTUimwDXP SX+5VxiTgOTXDPJfYcRlGmZwJji3IBJqjV7KPzfWuGXnSmImIYKeiPijIjq3Ly7WsZcJHRl76zV8L MstbEnd8L3j420/Dsk6zWhzVaJABpIJ+8BOFJCnBrMWEKrkMjGufYbH6I0wOpoDy4kOiMchPnkiE2 F3VSFwhRpx0PYOyDrCdQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mnN5A-005Sbv-CE; Wed, 17 Nov 2021 15:42:45 +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 1mnMzz-005Q1r-Pf for linux-arm-kernel@lists.infradead.org; Wed, 17 Nov 2021 15:37:25 +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 B6A081FB; Wed, 17 Nov 2021 07:37:22 -0800 (PST) Received: from monolith.localdoman (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6AC4E3F5A1; Wed, 17 Nov 2021 07:37:21 -0800 (PST) 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, mark.rutland@arm.com Subject: [RFC PATCH v5 12/38] KVM: arm64: Allow userspace to lock and unlock memslots Date: Wed, 17 Nov 2021 15:38:16 +0000 Message-Id: <20211117153842.302159-13-alexandru.elisei@arm.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211117153842.302159-1-alexandru.elisei@arm.com> References: <20211117153842.302159-1-alexandru.elisei@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211117_073723_919667_C569E7FD X-CRM114-Status: UNSURE ( 8.84 ) 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 13f3af1f2e78..27e86e480355 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -78,11 +78,6 @@ 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) { @@ -129,8 +124,6 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm, mutex_unlock(&kvm->lock); 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: @@ -308,7 +301,7 @@ 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;