From: Will Deacon <will@kernel.org>
To: linux-arm-kernel@lists.infradead.org
Cc: mark.rutland@arm.com, catalin.marinas@arm.com,
Will Deacon <will@kernel.org>
Subject: [PATCH 0/3] Try to make SMP booting slightly less fragile
Date: Tue, 27 Aug 2019 16:18:12 +0100 [thread overview]
Message-ID: <20190827151815.2160-1-will@kernel.org> (raw)
Hi everyone,
After spending some time investigating SMP boot issues when using
(random?) configs from Qian Cai with lots of debug options enabled, I
hacked together these two patches which make SMP booting a little more
robust.
The whole thing is still a racy mess, but I'm not sure we can do much
about that without reworking it to use per-cpu data structures which
we can update atomically.
Will
--->8
Will Deacon (3):
arm64: smp: Increase secondary CPU boot timeout value
arm64: smp: Don't enter kernel with NULL stack pointer or task struct
arm64: smp: Treat unknown boot failures as being 'stuck in kernel'
arch/arm64/kernel/head.S | 8 ++++++++
arch/arm64/kernel/smp.c | 4 +++-
2 files changed, 11 insertions(+), 1 deletion(-)
--
2.11.0
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next reply other threads:[~2019-08-27 15:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-27 15:18 Will Deacon [this message]
2019-08-27 15:18 ` [PATCH 1/3] arm64: smp: Increase secondary CPU boot timeout value Will Deacon
2019-08-27 16:05 ` Mark Rutland
2019-08-27 15:18 ` [PATCH 2/3] arm64: smp: Don't enter kernel with NULL stack pointer or task struct Will Deacon
2019-08-27 16:04 ` Mark Rutland
2019-08-27 15:18 ` [PATCH 3/3] arm64: smp: Treat unknown boot failures as being 'stuck in kernel' Will Deacon
2019-08-27 15:59 ` Mark Rutland
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