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Re: [PATCH 00/16] arm: Fix handling of unrecognized functions in PSCI em


From: Peter Maydell
Subject: Re: [PATCH 00/16] arm: Fix handling of unrecognized functions in PSCI emulation
Date: Mon, 7 Feb 2022 11:19:51 +0000

On Thu, 27 Jan 2022 at 15:46, Peter Maydell <peter.maydell@linaro.org> wrote:
>
> This series fixes our handling of PSCI calls where the function ID is
> not recognized. These are supposed to return an error value, but
> currently we instead emulate the SMC or HVC instruction to trap to the
> guest at EL3 or EL2. Particularly of note for code review:
>  * patches 4-9 include some "is this the right behaviour for
>    this hardware" questions for the maintainers of those boards
>  * patch 15 has a DTB API question, as well as being a change in
>    what we edit in a DTB we are passed by the user
>  * testing of the affected machines would be welcome

Thanks to everybody for their review, testing, and confirmation
of the behaviour of particular bits of hardware.

I'm going to apply this to target-arm.next, with patches 5 (allwinner)
and 6 (xilinx) updated to remove the TODO comments, since we've
confirmed that the don't-start-secondaries behaviour is right for
that hardware.

-- PMM



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