From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org
Cc: Hector Martin <marcan@marcan.st>, Arnd Bergmann <arnd@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
kernel-team@android.com
Subject: [PATCH 0/2] arm64: Dealing with VHE-only CPUs
Date: Thu, 25 Mar 2021 12:47:19 +0000 [thread overview]
Message-ID: <20210325124721.941182-1-maz@kernel.org> (raw)
This short series is a rewrite of [1] after some reviewing from
Will. It simplifies the esoteric "stay at EL2" path, and the feature
override code where it actually belongs, allowing us to tell the user
that no, nVHE isn't a thing on these system.
This allows the infamous M1 to boot (tested on a M1 Mini).
Hector, feel free to pull these two patches as a preamble to the next
version of your series, though I'd expect this to go via the arm64
tree for obvious reasons.
[1] https://lore.kernel.org/r/20210304213902.83903-2-marcan@marcan.st
Marc Zyngier (2):
arm64: cpufeature: Allow early filtering of feature override
arm64: Cope with CPUs stuck in VHE mode
arch/arm64/kernel/cpufeature.c | 6 ++++++
arch/arm64/kernel/head.S | 33 +++++++++++++++++++++++++++---
arch/arm64/kernel/hyp-stub.S | 15 ++++++++++----
arch/arm64/kernel/idreg-override.c | 26 ++++++++++++++++++++++-
4 files changed, 72 insertions(+), 8 deletions(-)
--
2.29.2
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next reply other threads:[~2021-03-25 12:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-25 12:47 Marc Zyngier [this message]
2021-03-25 12:47 ` [PATCH 1/2] arm64: cpufeature: Allow early filtering of feature override Marc Zyngier
2021-03-25 19:27 ` Will Deacon
2021-03-26 10:56 ` Marc Zyngier
2021-03-29 10:21 ` Will Deacon
2021-03-25 12:47 ` [PATCH 2/2] arm64: Cope with CPUs stuck in VHE mode Marc Zyngier
2021-03-25 19:33 ` Will Deacon
2021-03-26 11:20 ` Marc Zyngier
2021-03-29 10:22 ` Will Deacon
2021-03-30 17:00 ` Marc Zyngier
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