From: Fuad Tabba <tabba@google.com>
To: kvmarm@lists.linux.dev
Cc: maz@kernel.org, oliver.upton@linux.dev, james.morse@arm.com,
suzuki.poulose@arm.com, yuzenghui@huawei.com,
catalin.marinas@arm.com, will@kernel.org, eric.auger@redhat.com,
jingzhangos@google.com, joey.gouly@arm.com, tabba@google.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 00/12] KVM: arm64: Fixes to fine grain traps and pKVM traps
Date: Wed, 6 Dec 2023 10:04:50 +0000 [thread overview]
Message-ID: <20231206100503.564090-1-tabba@google.com> (raw)
Changes from v1:
- Handle HAFGRTR_EL2 in nested virt
- Update the nested virt FGT tables with the added trap bits (Marc)
- Use the generated value for RES0 (Marc)
- Calculate the value of NMASK based on RES0 and MASK
This patch series has fixes, updates, and code for validating
fine grain trap register masks, as well as some fixes to feature
trapping in pKVM.
New fine grain trap (FGT) bits have been defined in the latest
Arm Architecture System Registers xml specification (2023-09)
[*], so the code is updated to reflect them. Moreover, some of
the already-defined masks overlap with RES0, which this series
fixes.
It also adds FGT register masks that weren't defined earlier,
handling of HAFGRTR_EL2 in nested virt, as well as build time
validation that the bits of the various masks are all accounted
for and without overlap.
Based on 6.7-rc4.
Cheers,
/fuad
[*] https://developer.arm.com/downloads/-/exploration-tools
Fuad Tabba (12):
KVM: Add missing HCRX_EL2 field definitions
KVM: arm64: Add latest HFGxTR_EL2 FGT entries to nested virt
KVM: arm64: Add latest HFGITR_EL2 FGT entries to nested virt
KVM: arm64: Add bit masks for HAFGRTR_EL2
KVM: arm64: Handle HAFGRTR_EL2 trapping in nested virt
KVM: arm64: Update and fix FGT register masks
KVM: arm64: Add build validation for FGT trap mask values
KVM: arm64: Use generated FGT RES0 bits instead of specifying them
KVM: arm64: Generate the HFGWTR-only RES0 bits
KVM: arm64: Define FGT NMASK bits relative to other fields
KVM: arm64: Trap external trace for protected VMs
KVM: arm64: Mark CMOW as allowed for protected VMs
arch/arm64/include/asm/kvm_arm.h | 58 +++++++------
arch/arm64/include/asm/kvm_host.h | 1 +
arch/arm64/include/asm/sysreg.h | 20 +++++
arch/arm64/kvm/emulate-nested.c | 63 ++++++++++++++
arch/arm64/kvm/hyp/include/hyp/switch.h | 29 +++++++
.../arm64/kvm/hyp/include/nvhe/fixed_config.h | 4 +-
arch/arm64/kvm/hyp/nvhe/pkvm.c | 4 +
arch/arm64/kvm/sys_regs.c | 1 +
arch/arm64/tools/sysreg | 82 ++++++++++++++++++-
9 files changed, 231 insertions(+), 31 deletions(-)
base-commit: 33cc938e65a98f1d29d0a18403dbbee050dcad9a
--
2.43.0.rc2.451.g8631bc7472-goog
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next reply other threads:[~2023-12-06 10:05 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-06 10:04 Fuad Tabba [this message]
2023-12-06 10:04 ` [PATCH v2 01/12] KVM: Add missing HCRX_EL2 field definitions Fuad Tabba
2023-12-07 16:57 ` Mark Brown
2023-12-08 8:14 ` Fuad Tabba
2023-12-08 13:43 ` Mark Brown
2023-12-06 10:04 ` [PATCH v2 02/12] KVM: arm64: Add latest HFGxTR_EL2 FGT entries to nested virt Fuad Tabba
2023-12-07 17:06 ` Mark Brown
2023-12-08 8:16 ` Fuad Tabba
2023-12-06 10:04 ` [PATCH v2 03/12] KVM: arm64: Add latest HFGITR_EL2 " Fuad Tabba
2023-12-07 17:14 ` Mark Brown
2023-12-08 8:17 ` Fuad Tabba
2023-12-06 10:04 ` [PATCH v2 04/12] KVM: arm64: Add bit masks for HAFGRTR_EL2 Fuad Tabba
2023-12-07 17:19 ` Mark Brown
2023-12-08 8:17 ` Fuad Tabba
2023-12-06 10:04 ` [PATCH v2 05/12] KVM: arm64: Handle HAFGRTR_EL2 trapping in nested virt Fuad Tabba
2023-12-07 17:28 ` Mark Brown
2023-12-08 8:19 ` Fuad Tabba
2023-12-08 13:51 ` Mark Brown
2023-12-06 10:04 ` [PATCH v2 06/12] KVM: arm64: Update and fix FGT register masks Fuad Tabba
2023-12-07 15:00 ` Joey Gouly
2023-12-07 15:06 ` Fuad Tabba
2023-12-07 17:12 ` Joey Gouly
2023-12-08 8:23 ` Fuad Tabba
2023-12-06 10:04 ` [PATCH v2 07/12] KVM: arm64: Add build validation for FGT trap mask values Fuad Tabba
2023-12-06 10:04 ` [PATCH v2 08/12] KVM: arm64: Use generated FGT RES0 bits instead of specifying them Fuad Tabba
2023-12-06 10:04 ` [PATCH v2 09/12] KVM: arm64: Generate the HFGWTR-only RES0 bits Fuad Tabba
2023-12-06 10:19 ` Fuad Tabba
2023-12-06 10:05 ` [PATCH v2 10/12] KVM: arm64: Define FGT NMASK bits relative to other fields Fuad Tabba
2023-12-06 10:05 ` [PATCH v2 11/12] KVM: arm64: Trap external trace for protected VMs Fuad Tabba
2023-12-06 10:05 ` [PATCH v2 12/12] KVM: arm64: Mark CMOW as allowed " Fuad Tabba
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