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Re: [PATCH v2 06/24] armv7m: Delete unused "ARM, bitband-memory" devices
From: |
Peter Maydell |
Subject: |
Re: [PATCH v2 06/24] armv7m: Delete unused "ARM, bitband-memory" devices |
Date: |
Mon, 8 Jun 2020 15:23:10 +0100 |
On Thu, 28 May 2020 at 12:04, Markus Armbruster <armbru@redhat.com> wrote:
>
> These devices are optional, and enabled by property "enable-bitband".
> armv7m_instance_init() creates them unconditionally, because the
> property has not been set then. armv7m_realize() realizes them only
> when the property is true. Works, although it leaves unrealized
> devices hanging around in the QOM composition tree. Affects machines
> microbit, mps2-an505, mps2-an521, musca-a, and musca-b1.
>
> Delete the unused devices by making armv7m_realize() unparent them.
> Visible in "info qom-tree"; here's the change for microbit:
>
> /machine (microbit-machine)
> /microbit.twi (microbit.i2c)
> /microbit.twi[0] (qemu:memory-region)
> /nrf51 (nrf51-soc)
> /armv6m (armv7m)
> /armv7m-container[0] (qemu:memory-region)
> - /bitband[0] (ARM,bitband-memory)
> - /bitband[0] (qemu:memory-region)
> - /bitband[1] (ARM,bitband-memory)
> - /bitband[0] (qemu:memory-region)
> /cpu (cortex-m0-arm-cpu)
>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: qemu-arm@nongnu.org
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
thanks
-- PMM
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