From: Stephen Boyd <swboyd@chromium.org>
To: Marc Zyngier <maz@kernel.org>
Cc: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
Mark Rutland <mark.rutland@arm.com>,
rnayak@codeaurora.org, suzuki.poulose@arm.com,
catalin.marinas@arm.com,
linux-arm-kernel <linux-arm-kernel-bounces@lists.infradead.org>,
linux-kernel@vger.kernel.org, jeremy.linton@arm.com,
bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org,
andrew.murray@arm.com, will@kernel.org, dave.martin@arm.com,
linux-arm-kernel@lists.infradead.org, marc.w.gonzalez@free.fr
Subject: Re: Relax CPU features sanity checking on heterogeneous architectures
Date: Fri, 18 Oct 2019 07:33:29 -0700 [thread overview]
Message-ID: <5da9cd3a.1c69fb81.95e9.e5e2@mx.google.com> (raw)
In-Reply-To: <c9285391dbbe936d3f242bdd0d226b93@www.loen.fr>
Quoting Marc Zyngier (2019-10-18 00:20:56)
>
> If this SoC is anythinig like SM8150, 32bit guests will be hit and
> miss,
> depending on the CPU your guest runs on, or is migrated to. We need to
> either drop capabilities from the 32bit-capable CPU, or prevent the
> non-32bit capable CPU from booting if a 32bit guest has been started.
>
> You just have to hope that the kernel is entered at EL2, and that QC's
> "value add" has been moved somewhere else...
>
Ok that's good.
next prev parent reply other threads:[~2019-10-18 14:33 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-11 5:49 Relax CPU features sanity checking on heterogeneous architectures Sai Prakash Ranjan
2019-10-11 9:19 ` Marc Gonzalez
2019-10-11 9:57 ` Sai Prakash Ranjan
2019-10-11 10:50 ` Mark Rutland
2019-10-11 11:09 ` Marc Gonzalez
2019-10-11 13:33 ` Sai Prakash Ranjan
2019-10-11 13:17 ` Sai Prakash Ranjan
2019-10-11 13:34 ` Marc Zyngier
2019-10-11 13:40 ` Sai Prakash Ranjan
2019-10-17 20:00 ` Stephen Boyd
2019-10-18 7:20 ` Marc Zyngier
2019-10-18 14:33 ` Stephen Boyd [this message]
2019-10-18 16:40 ` Marc Zyngier
2019-10-18 10:18 ` Sai Prakash Ranjan
2019-10-11 13:33 ` Marc Zyngier
2019-10-11 13:54 ` Mark Rutland
2019-10-11 14:06 ` Marc Zyngier
2019-10-17 21:39 ` Jeremy Linton
2019-10-18 9:01 ` Catalin Marinas
2020-01-20 2:47 ` Sai Prakash Ranjan
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