From patchwork Tue Feb 25 01:53:23 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Perret X-Patchwork-Id: 13989172 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A1B4DC021A4 for ; Tue, 25 Feb 2025 01:55:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:Cc:To:From: Subject:Message-ID:Mime-Version:Date:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=AH9Y+qk/plKTRCQ8rdCbOXUmRPqvAGtJ+mP7kh2bkjA=; b=izHm9P4Hi3OqeCejOXwn+PhK05 DYGtFK0gruZhsQ+bzXskJfVRMZBbzh7rlGmRMNS7hnDqV1dIw9GylCj/CnW2YoL4hsxoxyQId2Kxc J7mSzHKm75RYYHeRp4GkLuYojqI12voAMs8mCrgxNawsb18nnKS86uO5Q5ieR5yn5N5bugtSHCsH0 3RMtO+VlslBM/E7B0QzAfPqNwDNL88KoeYRIE8iyy2POHcTUjzdsM3L3R/VEOtkLkt+Ah2UzBDS40 79nUg/S9d9dAY6pYsPkAuPmbQ6vfHL4UlhEppY1IEJhKoLkEYMfDpj3W+OLJRNpuYdG+0RkoDnukX 58Wv/odA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tmkA6-0000000FkXY-21Cx; Tue, 25 Feb 2025 01:55:06 +0000 Received: from mail-ed1-x549.google.com ([2a00:1450:4864:20::549]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tmk8Z-0000000FkFS-2vZz for linux-arm-kernel@lists.infradead.org; Tue, 25 Feb 2025 01:53:33 +0000 Received: by mail-ed1-x549.google.com with SMTP id 4fb4d7f45d1cf-5dece867fe2so5021971a12.2 for ; Mon, 24 Feb 2025 17:53:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1740448409; x=1741053209; darn=lists.infradead.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=AH9Y+qk/plKTRCQ8rdCbOXUmRPqvAGtJ+mP7kh2bkjA=; b=v3F6CQ7p9rmbduyqGhoMqbZ6/41SMGpvOV+TIhhEWWzxHMVts/eubTkf4Q4ymWwu4m UpzwMqbM+QzJWHN8b90dTC/pRhpA1ms6qK59opxl+zchaMIDlq6eY5/7TOt+7rikZWWm 4rspwDZwSGuVM41BiO4vmMwkFhRqwOCSiphqziEMtwXOmLaiVhZNQPodFn8mFMr1bjj+ iOhcwrXuy3BifseDO8hDePDO7LJB5Uv39KCZMw3HzGEb3A3JbbkLTF7ylWdTIEP8tmVu gLYfeLMxCxjsCgCD1iUZjXxYWKMq7/GnzpsszoBqHc6lqN+6I2rKJ7UfUPJpUtufPBK1 LzEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1740448409; x=1741053209; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=AH9Y+qk/plKTRCQ8rdCbOXUmRPqvAGtJ+mP7kh2bkjA=; b=h+wR9c3GCHf/aCm+sV9ohkctlvuyHp3wrxlRhYoBEHR9ILSrbSU96Y0SOQIIibfgIs V0XO50CewK9sIz2IPpgMl9ku08aL9vnp8faJ7UicuauHBUEaZygBABDajmVF0TxomYVP Mr7s5v0HEOjTeHVQtAmLqJJRqcQtP/BD1vCp/2zx+m8BXxOBawGv9oRJavHOPoyY5qjw tmo10RKKIxU/xRvp6fzqnjL4gCzp3KvCvoNAWSuXMR2DDC0X1kfT9Pcj88nFkM0x/AtJ Kq0cqEmDSpHs0rpTyM5/oxbyp0b2lMrKYPR7U06EJZKa+xDzCZq7nsq6zs3GNMzNa39b fqng== X-Gm-Message-State: AOJu0YzFrxeSrtHFRwfWYvmLrS06gNCsmHZtYvfYWXgiGYsbrRePsrgA 8eUodPfc6wjPbtgiuQygSswyVT2KLWGNkZV2OVUlUwrY9ptcHg845JEk7JvSOZ23MVbZh9KBjO8 7mdOaoA== X-Google-Smtp-Source: AGHT+IHJKOHeegcslTQv6gGnIpceJABRkLrMUljBH8OEUmqvgitKR+e8++1jZBdKvqfUQIxfPe64opEc23yp X-Received: from edbig12.prod.google.com ([2002:a05:6402:458c:b0:5de:bbcb:2c3]) (user=qperret job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6402:2113:b0:5e0:8ab6:65fa with SMTP id 4fb4d7f45d1cf-5e4469daaa1mr1165847a12.19.1740448409709; Mon, 24 Feb 2025 17:53:29 -0800 (PST) Date: Tue, 25 Feb 2025 01:53:23 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.48.1.658.g4767266eb4-goog Message-ID: <20250225015327.3708420-1-qperret@google.com> Subject: [PATCH v2 0/4] Selftest for pKVM ownership transitions From: Quentin Perret To: Marc Zyngier , Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Will Deacon Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, qperret@google.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250224_175331_732850_6D5C3F2C X-CRM114-Status: GOOD ( 11.61 ) 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 Hi all, This is the v2 of the pKVM selftest originally posted here [1]. Changes since v1: - added support for testing NP guest transitions; - added .data section in pKVM to allow using non-zero globals (needed for previous point); - dropped superfluous WARN() from __pkvm_host_share_guest() which is a pain for testing; - updated assertions for hyp/host transitions according to the discussion on v1. Patches based on v6.14-rc4, tested on Qemu. [1] https://lore.kernel.org/kvmarm/20241129125800.992468-1-qperret@google.com/ David Brazdil (1): KVM: arm64: Add .hyp.data section Quentin Perret (3): KVM: arm64: Don't WARN from __pkvm_host_share_guest() KVM: arm64: Selftest for pKVM transitions KVM: arm64: Extend pKVM selftest for np-guests arch/arm64/include/asm/kvm_pkvm.h | 6 + arch/arm64/include/asm/sections.h | 1 + arch/arm64/kernel/image-vars.h | 2 + arch/arm64/kernel/vmlinux.lds.S | 18 +- arch/arm64/kvm/Kconfig | 10 + arch/arm64/kvm/arm.c | 7 + arch/arm64/kvm/hyp/include/nvhe/mem_protect.h | 6 + arch/arm64/kvm/hyp/nvhe/hyp.lds.S | 2 + arch/arm64/kvm/hyp/nvhe/mem_protect.c | 198 +++++++++++++++++- arch/arm64/kvm/hyp/nvhe/setup.c | 12 ++ arch/arm64/kvm/pkvm.c | 2 + 11 files changed, 260 insertions(+), 4 deletions(-)