From: Catalin Marinas <catalin.marinas@arm.com>
To: Steven Price <steven.price@arm.com>
Cc: Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>,
James Morse <james.morse@arm.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Dave Martin <Dave.Martin@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
qemu-devel@nongnu.org, Juan Quintela <quintela@redhat.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Richard Henderson <richard.henderson@linaro.org>,
Peter Maydell <peter.maydell@linaro.org>,
Andrew Jones <drjones@redhat.com>
Subject: Re: [PATCH v16 3/7] KVM: arm64: Introduce MTE VM feature
Date: Fri, 18 Jun 2021 15:47:08 +0100 [thread overview]
Message-ID: <20210618144707.GF16116@arm.com> (raw)
In-Reply-To: <20210618132826.54670-4-steven.price@arm.com>
On Fri, Jun 18, 2021 at 02:28:22PM +0100, Steven Price wrote:
> Add a new VM feature 'KVM_ARM_CAP_MTE' which enables memory tagging
> for a VM. This will expose the feature to the guest and automatically
> tag memory pages touched by the VM as PG_mte_tagged (and clear the tag
> storage) to ensure that the guest cannot see stale tags, and so that
> the tags are correctly saved/restored across swap.
>
> Actually exposing the new capability to user space happens in a later
> patch.
>
> Signed-off-by: Steven Price <steven.price@arm.com>
This works for me:
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Steven Price <steven.price@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Peter Maydell <peter.maydell@linaro.org>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Andrew Jones <drjones@redhat.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
qemu-devel@nongnu.org, Marc Zyngier <maz@kernel.org>,
Juan Quintela <quintela@redhat.com>,
Richard Henderson <richard.henderson@linaro.org>,
linux-kernel@vger.kernel.org, Dave Martin <Dave.Martin@arm.com>,
James Morse <james.morse@arm.com>,
linux-arm-kernel@lists.infradead.org,
Thomas Gleixner <tglx@linutronix.de>,
Will Deacon <will@kernel.org>,
kvmarm@lists.cs.columbia.edu,
Julien Thierry <julien.thierry.kdev@gmail.com>
Subject: Re: [PATCH v16 3/7] KVM: arm64: Introduce MTE VM feature
Date: Fri, 18 Jun 2021 15:47:08 +0100 [thread overview]
Message-ID: <20210618144707.GF16116@arm.com> (raw)
In-Reply-To: <20210618132826.54670-4-steven.price@arm.com>
On Fri, Jun 18, 2021 at 02:28:22PM +0100, Steven Price wrote:
> Add a new VM feature 'KVM_ARM_CAP_MTE' which enables memory tagging
> for a VM. This will expose the feature to the guest and automatically
> tag memory pages touched by the VM as PG_mte_tagged (and clear the tag
> storage) to ensure that the guest cannot see stale tags, and so that
> the tags are correctly saved/restored across swap.
>
> Actually exposing the new capability to user space happens in a later
> patch.
>
> Signed-off-by: Steven Price <steven.price@arm.com>
This works for me:
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Steven Price <steven.price@arm.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>,
qemu-devel@nongnu.org, Marc Zyngier <maz@kernel.org>,
Juan Quintela <quintela@redhat.com>,
Richard Henderson <richard.henderson@linaro.org>,
linux-kernel@vger.kernel.org, Dave Martin <Dave.Martin@arm.com>,
linux-arm-kernel@lists.infradead.org,
Thomas Gleixner <tglx@linutronix.de>,
Will Deacon <will@kernel.org>,
kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v16 3/7] KVM: arm64: Introduce MTE VM feature
Date: Fri, 18 Jun 2021 15:47:08 +0100 [thread overview]
Message-ID: <20210618144707.GF16116@arm.com> (raw)
In-Reply-To: <20210618132826.54670-4-steven.price@arm.com>
On Fri, Jun 18, 2021 at 02:28:22PM +0100, Steven Price wrote:
> Add a new VM feature 'KVM_ARM_CAP_MTE' which enables memory tagging
> for a VM. This will expose the feature to the guest and automatically
> tag memory pages touched by the VM as PG_mte_tagged (and clear the tag
> storage) to ensure that the guest cannot see stale tags, and so that
> the tags are correctly saved/restored across swap.
>
> Actually exposing the new capability to user space happens in a later
> patch.
>
> Signed-off-by: Steven Price <steven.price@arm.com>
This works for me:
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Steven Price <steven.price@arm.com>
Cc: Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>,
James Morse <james.morse@arm.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Dave Martin <Dave.Martin@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
qemu-devel@nongnu.org, Juan Quintela <quintela@redhat.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Richard Henderson <richard.henderson@linaro.org>,
Peter Maydell <peter.maydell@linaro.org>,
Andrew Jones <drjones@redhat.com>
Subject: Re: [PATCH v16 3/7] KVM: arm64: Introduce MTE VM feature
Date: Fri, 18 Jun 2021 15:47:08 +0100 [thread overview]
Message-ID: <20210618144707.GF16116@arm.com> (raw)
In-Reply-To: <20210618132826.54670-4-steven.price@arm.com>
On Fri, Jun 18, 2021 at 02:28:22PM +0100, Steven Price wrote:
> Add a new VM feature 'KVM_ARM_CAP_MTE' which enables memory tagging
> for a VM. This will expose the feature to the guest and automatically
> tag memory pages touched by the VM as PG_mte_tagged (and clear the tag
> storage) to ensure that the guest cannot see stale tags, and so that
> the tags are correctly saved/restored across swap.
>
> Actually exposing the new capability to user space happens in a later
> patch.
>
> Signed-off-by: Steven Price <steven.price@arm.com>
This works for me:
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-06-18 14:47 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-18 13:28 [PATCH v16 0/7] MTE support for KVM guest Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` [PATCH v16 1/7] arm64: mte: Handle race when synchronising tags Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 14:40 ` Catalin Marinas
2021-06-18 14:40 ` Catalin Marinas
2021-06-18 14:40 ` Catalin Marinas
2021-06-18 14:40 ` Catalin Marinas
2021-06-18 15:42 ` Marc Zyngier
2021-06-18 15:42 ` Marc Zyngier
2021-06-18 15:42 ` Marc Zyngier
2021-06-18 15:42 ` Marc Zyngier
2021-06-21 8:27 ` Steven Price
2021-06-21 8:27 ` Steven Price
2021-06-21 8:27 ` Steven Price
2021-06-21 8:27 ` Steven Price
2021-06-18 13:28 ` [PATCH v16 2/7] arm64: mte: Sync tags for pages where PTE is untagged Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` [PATCH v16 3/7] KVM: arm64: Introduce MTE VM feature Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 14:47 ` Catalin Marinas [this message]
2021-06-18 14:47 ` Catalin Marinas
2021-06-18 14:47 ` Catalin Marinas
2021-06-18 14:47 ` Catalin Marinas
2021-06-21 9:01 ` Marc Zyngier
2021-06-21 9:01 ` Marc Zyngier
2021-06-21 9:01 ` Marc Zyngier
2021-06-21 9:01 ` Marc Zyngier
2021-06-21 9:07 ` Steven Price
2021-06-21 9:07 ` Steven Price
2021-06-21 9:07 ` Steven Price
2021-06-21 9:07 ` Steven Price
2021-06-18 13:28 ` [PATCH v16 4/7] KVM: arm64: Save/restore MTE registers Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` [PATCH v16 5/7] KVM: arm64: Expose KVM_ARM_CAP_MTE Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` [PATCH v16 6/7] KVM: arm64: ioctl to fetch/store tags in a guest Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` [PATCH v16 7/7] KVM: arm64: Document MTE capability and ioctl Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 13:28 ` Steven Price
2021-06-18 14:52 ` Catalin Marinas
2021-06-18 14:52 ` Catalin Marinas
2021-06-18 14:52 ` Catalin Marinas
2021-06-18 14:52 ` Catalin Marinas
2021-06-21 8:18 ` Steven Price
2021-06-21 8:18 ` Steven Price
2021-06-21 8:18 ` Steven Price
2021-06-21 8:18 ` Steven Price
2021-06-21 8:48 ` Catalin Marinas
2021-06-21 8:48 ` Catalin Marinas
2021-06-21 8:48 ` Catalin Marinas
2021-06-21 8:48 ` Catalin Marinas
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