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In-Reply-To: <20170308190511.31195-1-lersek@redhat.com>
References: <20170308190511.31195-1-lersek@redhat.com>
From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Date: Thu, 9 Mar 2017 09:16:52 +0100
Message-ID: <CAKv+Gu9emFW5=piPwjNeBYJvntj4SbLV-=YHQckPVBwLuDpXBQ@mail.gmail.com>
To: Laszlo Ersek <lersek@redhat.com>
Cc: edk2-devel-01 <edk2-devel@ml01.01.org>
Subject: Re: [PATCH 0/6] ArmVirtPkg: don't forward the DT to the OS if QEMU provides ACPI
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On 8 March 2017 at 20:05, Laszlo Ersek <lersek@redhat.com> wrote:
> This series replaces the PURE_ACPI_BOOT_ENABLE build option with dynamic
> behavior, matching QEMU's (inverse sense) "-no-acpi" switch. In
> particular, DT and ACPI are no longer exposed to the guest at the same
> time. (DT is exposed with "-no-acpi", or else ACPI is exposed without
> "-no-acpi".)
>
> Repo:   https://github.com/lersek/edk2.git
> Branch: dynamic_pure_acpi
> RHBZ:   https://bugzilla.redhat.com/show_bug.cgi?id=1430262
>
> Tested with RHEL-7.3 for ARM and Fedora 24 guests (DT vs. ACPI).
>
> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
>

Hi Laszlo,

This looks complicated to me. Given that it is arguably a policy to
only expose on h/w description or the other, couldn't we simply remove
the FDT config table in BDS if an ACPI/ACPI2.0 config table is
present?