From: Oliver Upton <oliver.upton@linux.dev>
To: Marc Zyngier <maz@kernel.org>
Cc: Kristina Martsenko <kristina.martsenko@arm.com>,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Mark Rutland <mark.rutland@arm.com>,
Mark Brown <broonie@kernel.org>,
Luis Machado <luis.machado@arm.com>,
Vladimir Murzin <vladimir.murzin@arm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 06/11] KVM: arm64: hide MOPS from guests
Date: Mon, 5 Jun 2023 15:45:10 +0000 [thread overview]
Message-ID: <ZH4DBoFv2CkoxFmX@linux.dev> (raw)
In-Reply-To: <87ttvpndhx.wl-maz@kernel.org>
On Sat, Jun 03, 2023 at 09:42:18AM +0100, Marc Zyngier wrote:
> On Tue, 09 May 2023 15:22:30 +0100,
> Kristina Martsenko <kristina.martsenko@arm.com> wrote:
> >
> > As FEAT_MOPS is not supported in guests yet, hide it from the ID
> > registers for guests.
> >
> > The MOPS instructions are UNDEFINED in guests as HCRX_EL2.MSCEn is not
> > set in HCRX_GUEST_FLAGS, and will take an exception to EL1 if executed.
> >
> > Acked-by: Catalin Marinas <catalin.marinas@arm.com>
> > Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
>
> This is very likely to clash with Jing's series that completely
> reworks the whole idreg series, but as long as this is on its own
> branch, we can deal with that.
Yup, we will definitely want to get that ironed out. I'll pull Catalin's
branch when this all gets queued up.
Acked-by: Oliver Upton <oliver.upton@linux.dev>
--
Thanks,
Oliver
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next prev parent reply other threads:[~2023-06-05 15:45 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230509142235.3284028-1-kristina.martsenko@arm.com>
[not found] ` <20230509142235.3284028-8-kristina.martsenko@arm.com>
2023-05-25 19:50 ` [PATCH v2 07/11] arm64: mops: handle MOPS exceptions Colton Lewis
2023-05-30 16:36 ` Kristina Martsenko
2023-06-05 11:43 ` Shaoqin Huang
2023-06-05 12:04 ` Catalin Marinas
[not found] ` <20230509142235.3284028-2-kristina.martsenko@arm.com>
2023-06-02 13:49 ` [PATCH v2 01/11] KVM: arm64: initialize HCRX_EL2 Catalin Marinas
2023-06-05 15:41 ` Oliver Upton
2023-06-03 8:39 ` Marc Zyngier
[not found] ` <20230509142235.3284028-4-kristina.martsenko@arm.com>
2023-06-02 13:51 ` [PATCH v2 03/11] KVM: arm64: switch HCRX_EL2 between host and guest Catalin Marinas
2023-06-05 15:41 ` Oliver Upton
2023-06-03 8:40 ` Marc Zyngier
[not found] ` <20230509142235.3284028-7-kristina.martsenko@arm.com>
2023-05-25 19:26 ` [PATCH v2 06/11] KVM: arm64: hide MOPS from guests Colton Lewis
2023-05-30 16:34 ` Kristina Martsenko
2023-06-03 8:42 ` Marc Zyngier
2023-06-05 15:45 ` Oliver Upton [this message]
2023-06-05 17:46 ` [PATCH v2 00/11] arm64: Support for Armv8.8 memcpy instructions in userspace Catalin Marinas
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