From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f74.google.com (mail-ed1-f74.google.com [209.85.208.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3BAE778F45 for ; Tue, 25 Feb 2025 01:53:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740448413; cv=none; b=Xnag3iC/JnE8X8lpe1MhGf6E4C2sWsvgC24+QHataqdrS+oqm5RL2uMK7O4tgsm3w3NbP412gVYYWRrvGiiBDkUcRQBcDb4le5fxKaEnaBN9zcv3q17evdxZZS7I8VioLgSCz4jGyL9tPlEfYSvREfmmMaYlx6IWICQNY3v8fWM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740448413; c=relaxed/simple; bh=lDnDEm+dSfaeSLN9szJPpAcWhldP+uIqITh9ILIqPuo=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=Xtk1Nfe3JXWhvAZSTkc7iQc7dc/1JXuElLh/maxtcrub6iRoULH/GYZauU1fGagX65CudnwGqkioD/dUJXPaq45jz5d6Z/n0O+qfs7qqGIewP8JEJCFi/OBQFwTxMDdVjJWVO+vBDb5pQUL7rzaSRTaBsiUShYtAYY8pd9b795Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--qperret.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=lZu4Rdq4; arc=none smtp.client-ip=209.85.208.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--qperret.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="lZu4Rdq4" Received: by mail-ed1-f74.google.com with SMTP id 4fb4d7f45d1cf-5dece867fe2so5021973a12.2 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=vger.kernel.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=lZu4Rdq40eBXReVsy27/ntL36x/ZMqyICKSS6Gj/FvJvlfCciFuCnVf1llQ+ym++DV HYMaHctIYnqs7+aKnXJdKoFRih9w4YpBekYo4UPKDq13YLm19W4bXEQ/iK3LnQ1Dvct1 0XDFJJ5Fa5CQdURGPkAdH+mK/OKMQQKgYAH5s5ZR6l1WLwXKKrpD/B3x/VJgsTY20g2F jUFZ0DpmylVtsqW5LorQ6+lDJwyjDl/0eLZvT6hNdxV694xRwd0MH67xuaFrEHoIfv3V XXEGbq/G5EPEPXL58H0/pUkGurPmA/dNZJN+x+B/BrTDBn7iKBt7xT4ce6mE3SoFZgrq 320A== 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=Ya+HWgLt5RgDtX2e/XZBx5k7uxivbqP0UfvsYuFcnMG5go2HDSENEXbzyonlkZ6eX1 sMLHN97zvNuM6FddR5+DuSdXzSJ6JUde1QPoDwGEHx39n8l/5IpiBt/q5+LUuM+ClER0 32WN/8ueb35QteQre3U4Z2FyuQjnMY0WkwohLdWmhLCLcN+hr3pkaL97b5cH6KT1uCoC cW0z+tnBx8ky/2ctN7OMKzKb3Xon7e0uFdPt+HRXeSO5BsV/2DU6SKFPErqEYqqbdA70 rrQJIPSEbUC1vaiR1Yyp84CQl2nKyn4bljGcuuBHJNPhGsUMfNbw8qgp+Mllh/dDt91o gkvA== X-Forwarded-Encrypted: i=1; AJvYcCVIDXKqU9guZAX7TmCxn0d7mBfPzn8Pyga4A/oHb2Ejr91gB3fZtbDz2moRBRs0ym2a/fGbZDUjlsQSmtM=@vger.kernel.org X-Gm-Message-State: AOJu0YyomONwqGYTZGyT3QT1KYgAeWPqo8E6iga5ALZZ5kQDKYDnlqAe qtB/2zU0uLv4iwz/VnHHgiDzQY07+Nw0rnrSRQN9sh7hHPUjuceenJviAj8TCaxhVjZtZnG+NsV DxiMrqA== 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 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 Content-Type: text/plain; charset="UTF-8" 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(-) -- 2.48.1.658.g4767266eb4-goog