Re: [PATCH v7 2/3] arm64: kvm: Introduce MTE VCPU feature

2021-02-04 Thread Steven Price
On 02/02/2021 17:12, Marc Zyngier wrote: On 2021-01-15 15:28, Steven Price wrote: Add a new VM feature 'KVM_ARM_CAP_MTE' which enables memory tagging for a VM. This exposes the feature to the guest and automatically tags memory pages touched by the VM as PG_mte_tagged (and clears the tags

Re: [PATCH v7 2/3] arm64: kvm: Introduce MTE VCPU feature

2021-02-02 Thread Marc Zyngier
On 2021-01-15 15:28, Steven Price wrote: Add a new VM feature 'KVM_ARM_CAP_MTE' which enables memory tagging for a VM. This exposes the feature to the guest and automatically tags memory pages touched by the VM as PG_mte_tagged (and clears the tags storage) to ensure that the guest cannot see

[PATCH v7 2/3] arm64: kvm: Introduce MTE VCPU feature

2021-01-15 Thread Steven Price
Add a new VM feature 'KVM_ARM_CAP_MTE' which enables memory tagging for a VM. This exposes the feature to the guest and automatically tags memory pages touched by the VM as PG_mte_tagged (and clears the tags storage) to ensure that the guest cannot see stale tags, and so that the tags are