Messages in this thread | | | From | Steven Price <> | Subject | [PATCH v3 0/2] MTE support for KVM guest | Date | Fri, 25 Sep 2020 10:36:05 +0100 |
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Version 3 of adding MTE support for KVM guests. See the previous (v2) posting for background:
https://lore.kernel.org/r/20200904160018.29481-1-steven.price%40arm.com
These patches add support to KVM to enable MTE within a guest. They are based on Catalin's v9 MTE user-space support series[1] (currently in next).
Changes since v2:
* MTE is no longer a VCPU feature, instead it is a VM cap.
* Being a VM cap means easier probing (check for KVM_CAP_ARM_MTE).
* The cap must be set before any VCPUs are created, preventing any shenanigans where MTE is enabled for the guest after memory accesses have been performed.
[1] https://lore.kernel.org/r/20200904103029.32083-1-catalin.marinas@arm.com
Steven Price (2): arm64: kvm: Save/restore MTE registers arm64: kvm: Introduce MTE VCPU feature
arch/arm64/include/asm/kvm_emulate.h | 3 +++ arch/arm64/include/asm/kvm_host.h | 7 +++++++ arch/arm64/include/asm/sysreg.h | 3 ++- arch/arm64/kvm/arm.c | 9 +++++++++ arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 14 ++++++++++++++ arch/arm64/kvm/mmu.c | 15 +++++++++++++++ arch/arm64/kvm/sys_regs.c | 20 +++++++++++++++----- include/uapi/linux/kvm.h | 1 + 8 files changed, 66 insertions(+), 6 deletions(-)
-- 2.20.1
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