Thread (13 messages) 13 messages, 4 authors, 2020-09-09

Re: [PATCH v4 0/3] Cortex-A77 erratum 1508412 workaround

From: Will Deacon <will@kernel.org>
Date: 2020-08-21 10:58:20
Also in: kvmarm

On Mon, Aug 03, 2020 at 01:31:24PM -0600, Rob Herring wrote:
This series implements the work-around for Cortex-A77 erratum 1508412.
KVM guests which don't implement the workaround can still deadlock the
system. This is also the case with the existing Cortex-A57 erratum 832075,
so we add a warning message if an erratum can cause deadlock.
For the series:

Acked-by: Will Deacon <will@kernel.org>

I'm a bit worried about how we'll get on maintaining this, given that we
need to make sure that all new users of read_sysreg(par_el1) use
read_sysreg_par() instead, but oh well.

Will

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