From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BBEA41756F for ; Mon, 5 Feb 2024 10:34:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707129287; cv=none; b=qPYOsOyVBKLpVYojJKLWUZtCbL2KUVfCW4C9lg6w4F9t3Fu1uSnWuXxZnUV6m+Te81TAhvCDQc7uNUmxIl2oM1D6ixn9CHAqKkrOL9SafGpSfNsYPVTXKa7q1udaA9/WFYdPTkeHObtDRu9CFlEQdF7uB4980W0hLj9NaBZgrLU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707129287; c=relaxed/simple; bh=kATcKRrqp+KeXZT4MEsXYWVUiosjAVDb43BXlRGcHyQ=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=VbT7oAa1EyGF6n5sJjDahco2/iABQSOlKGkTVKfnKRObFOl5reXALjWxANV6ljagcRINquh4LWnSOctvklA1NWJioPWDjvaVWdaJmCYWJslbKC+tzCF3anDuBdQXjN7TbxlXhWuIkX1jhjtmHvwYe5B7633UUYQdo3ADyavImrg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Hi4aFb8X; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Hi4aFb8X" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D44DC433F1; Mon, 5 Feb 2024 10:34:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707129287; bh=kATcKRrqp+KeXZT4MEsXYWVUiosjAVDb43BXlRGcHyQ=; h=From:To:Cc:Subject:Date:From; b=Hi4aFb8XxKqjkzKzDlWbR/OgaPXnsy+v1Xig7Obq3iI2n9b17Y3SfLkVsT3CiYodX 7hIG14CY6mFTls3QGwUpAy3yGoVwG9OpoqFgZjnl67pUGGmzf1DzrSbaCkxQpNT1WU h2PMkDGXM9DZJnRNRI7r1VF/mrH2nE0pt77vhIo/6Oe/UJMWwhq9WhPWSzMU0VSg9r IYi2mJLTEyrNRVy9svI+4qHZ4h2YM1T+QNNQMfZ7b9MUwGzh6kQ5N+D2cLUWXv8/PA F9t0NdJrIqKaGY4fUKpEA7VYAzaEwoisZw+XulfRGeZUsX7mV1G8u34raI0WoPjajI IT4wCkjJeoAow== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1rWwJI-000Nc3-PQ; Mon, 05 Feb 2024 10:34:44 +0000 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Catalin Marinas , Will Deacon , Joey Gouly , Mark Brown Subject: [PATCH v3 00/26] KVM/arm64: VM configuration enforcement Date: Mon, 5 Feb 2024 10:34:05 +0000 Message-Id: <20240205103431.1104133-1-maz@kernel.org> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, joey.gouly@arm.com, broonie@kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false This is the third version of this configurationm enforcement series after some heroic reviewing from Joey (again) and Suzuki. Many thanks to both. I think I have taken most of the feedback into account, but please shout if I have ignored something. * From v2: [2] - Fix totally broken handling of negative features by delegating the work that requires a functionnal brain to other people - Fix handling of HCR_ENSCXT as RES0 instead of RES1 (and its consequences...) - Add handling of VTTBR_EL2.CNP being RES0 - Add a snapshot of all RES0/RES1 fields so that we can catch them being changed behind our backs - Various cleanups * From v1: [1] - Fix embarrassing crash with FEAT_MOPS - Better error handling in the FGT code - Added/Fixed comments - Simplified the __vcpu_sys_reg() macro - Fixed FEAT_PIR handling - Folded in Oliver's PMU rework [1] https://lore.kernel.org/all/20240122201852.262057-1-maz@kernel.org [2] https://lore.kernel.org/all/20240130204533.693853-1-maz@kernel.org Marc Zyngier (26): arm64: sysreg: Add missing ID_AA64ISAR[13]_EL1 fields and variants KVM: arm64: Add feature checking helpers KVM: arm64: nv: Add sanitising to VNCR-backed sysregs KVM: arm64: nv: Add sanitising to EL2 configuration registers KVM: arm64: nv: Add sanitising to VNCR-backed FGT sysregs KVM: arm64: nv: Add sanitising to VNCR-backed HCRX_EL2 KVM: arm64: nv: Drop sanitised_sys_reg() helper KVM: arm64: Unify HDFG[WR]TR_GROUP FGT identifiers KVM: arm64: nv: Correctly handle negative polarity FGTs KVM: arm64: nv: Turn encoding ranges into discrete XArray stores KVM: arm64: Drop the requirement for XARRAY_MULTI KVM: arm64: nv: Move system instructions to their own sys_reg_desc array KVM: arm64: Always populate the trap configuration xarray KVM: arm64: Register AArch64 system register entries with the sysreg xarray KVM: arm64: Use the xarray as the primary sysreg/sysinsn walker KVM: arm64: Rename __check_nv_sr_forward() to triage_sysreg_trap() KVM: arm64: Add Fine-Grained UNDEF tracking information KVM: arm64: Propagate and handle Fine-Grained UNDEF bits KVM: arm64: Move existing feature disabling over to FGU infrastructure KVM: arm64: Streamline save/restore of HFG[RW]TR_EL2 KVM: arm64: Make TLBI OS/Range UNDEF if not advertised to the guest KVM: arm64: Make PIR{,E0}_EL1 UNDEF if S1PIE is not advertised to the guest KVM: arm64: Make AMU sysreg UNDEF if FEAT_AMU is not advertised to the guest KVM: arm64: Make FEAT_MOPS UNDEF if not advertised to the guest KVM: arm64: Snapshot all non-zero RES0/RES1 sysreg fields for later checking KVM: arm64: Add debugfs file for guest's ID registers arch/arm64/include/asm/kvm_arm.h | 4 +- arch/arm64/include/asm/kvm_host.h | 98 +++++++- arch/arm64/include/asm/kvm_nested.h | 1 - arch/arm64/kvm/Kconfig | 1 - arch/arm64/kvm/arm.c | 7 + arch/arm64/kvm/check-res-bits.h | 121 ++++++++++ arch/arm64/kvm/emulate-nested.c | 231 +++++++++++++----- arch/arm64/kvm/hyp/include/hyp/switch.h | 130 +++++----- arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 24 +- arch/arm64/kvm/nested.c | 267 ++++++++++++++++++++- arch/arm64/kvm/pmu-emul.c | 11 +- arch/arm64/kvm/sys_regs.c | 238 +++++++++++++++--- arch/arm64/kvm/sys_regs.h | 2 + arch/arm64/tools/sysreg | 8 +- include/kvm/arm_pmu.h | 11 - 15 files changed, 973 insertions(+), 181 deletions(-) create mode 100644 arch/arm64/kvm/check-res-bits.h -- 2.39.2