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From: Cornelia Huck <cohuck@redhat.com>
To: Marc Zyngier <maz@kernel.org>, James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Oliver Upton <oliver.upton@linux.dev>,
	Zenghui Yu <yuzenghui@huawei.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	steven.price@arm.com, kvmarm@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Subject: Re: [PATCH 2/2] KVM: arm64: Handle trap of tagged Set/Way CMOs
Date: Wed, 17 May 2023 12:24:19 +0200	[thread overview]
Message-ID: <87ttwb45nw.fsf@redhat.com> (raw)
In-Reply-To: <20230515204601.1270428-3-maz@kernel.org>

On Mon, May 15 2023, Marc Zyngier <maz@kernel.org> wrote:

> We appear to have missed the Set/Way CMOs when adding MTE support.
> Not that we really expect anyone to use them, but you never know
> what stupidity some people can come up with...
>
> Treat these mostly like we deal with the classic S/W CMOs, only
> with an additional check that MTE really is enabled.
>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> ---
>  arch/arm64/kvm/sys_regs.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)

Reviewed-by: Cornelia Huck <cohuck@redhat.com>


WARNING: multiple messages have this Message-ID (diff)
From: Cornelia Huck <cohuck@redhat.com>
To: Marc Zyngier <maz@kernel.org>, James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Oliver Upton <oliver.upton@linux.dev>,
	Zenghui Yu <yuzenghui@huawei.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	steven.price@arm.com, kvmarm@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Subject: Re: [PATCH 2/2] KVM: arm64: Handle trap of tagged Set/Way CMOs
Date: Wed, 17 May 2023 12:24:19 +0200	[thread overview]
Message-ID: <87ttwb45nw.fsf@redhat.com> (raw)
In-Reply-To: <20230515204601.1270428-3-maz@kernel.org>

On Mon, May 15 2023, Marc Zyngier <maz@kernel.org> wrote:

> We appear to have missed the Set/Way CMOs when adding MTE support.
> Not that we really expect anyone to use them, but you never know
> what stupidity some people can come up with...
>
> Treat these mostly like we deal with the classic S/W CMOs, only
> with an additional check that MTE really is enabled.
>
> Signed-off-by: Marc Zyngier <maz@kernel.org>
> ---
>  arch/arm64/kvm/sys_regs.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)

Reviewed-by: Cornelia Huck <cohuck@redhat.com>


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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2023-05-17 10:24 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-15 20:45 [PATCH 0/2] KVM: arm64: Handle MTE Set/Way CMOs Marc Zyngier
2023-05-15 20:45 ` Marc Zyngier
2023-05-15 20:46 ` [PATCH 1/2] arm64: Add missing Set/Way CMO encodings Marc Zyngier
2023-05-15 20:46   ` Marc Zyngier
2023-05-17 10:23   ` Cornelia Huck
2023-05-17 10:23     ` Cornelia Huck
2023-05-15 20:46 ` [PATCH 2/2] KVM: arm64: Handle trap of tagged Set/Way CMOs Marc Zyngier
2023-05-15 20:46   ` Marc Zyngier
2023-05-17 10:24   ` Cornelia Huck [this message]
2023-05-17 10:24     ` Cornelia Huck
2023-05-17 10:06 ` [PATCH 0/2] KVM: arm64: Handle MTE " Steven Price
2023-05-17 10:06   ` Steven Price
2023-05-23 16:13 ` Oliver Upton
2023-05-23 16:13   ` Oliver Upton
2023-05-24 12:49 ` Marc Zyngier
2023-05-24 12:49   ` Marc Zyngier

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