Re: [Xen-devel] [PATCH v4 07/10] arm: add a tiny kconfig configuration

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Fri, 1 Jun 2018, Julien Grall wrote:
> Hi,
> Sorry for the formatting.
> 
> On Thu, 31 May 2018, 22:50 Stefano Stabellini, <sstabellini@xxxxxxxxxx> wrote:
>       Add a tiny kconfig configuration. Enabled NULL and Credit schedulers.
>       Support only 8 cpus. It only carries non-default options (use make
>       olddefconfig to produce a complete .config file).
> 
>       Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> 
>       ---
>       Note that this approach has a limitation: it is not possible to "select
>       a range". In other words, using tiny.config NR_CPUS is set to 4. It is
>       not possible to increase it to 8 from config RCAR3.
> 
> 
> Is that still true? I thought we discussed a solution to do it yesterday.

No, it is not true anymore. See the longer explanation I sent in reply
to the other emails. I'll remove this paragraph next time.


> By that, I mean the platform would be selected at olddefconfig.
> 
>       ---
>        xen/arch/arm/configs/tiny.conf | 43 
> ++++++++++++++++++++++++++++++++++++++++++
>        1 file changed, 43 insertions(+)
>        create mode 100644 xen/arch/arm/configs/tiny.conf
> 
>       diff --git a/xen/arch/arm/configs/tiny.conf 
> b/xen/arch/arm/configs/tiny.conf
>       new file mode 100644
>       index 0000000..e9a5e65
>       --- /dev/null
>       +++ b/xen/arch/arm/configs/tiny.conf
>       @@ -0,0 +1,43 @@
>       +CONFIG_ARM_64=y
>       +CONFIG_ARM=y
>       +
>       +#
>       +# Architecture Features
>       +#
>       +# CONFIG_GICV3 is not set
>       +# CONFIG_MEM_ACCESS is not set
>       +# CONFIG_SBSA_VUART_CONSOLE is not set
>       +
>       +#
>       +# Common Features
>       +#
>       +# CONFIG_TMEM is not set
>       +
>       +#
>       +# Schedulers
>       +#
>       +# CONFIG_SCHED_CREDIT2 is not set
>       +# CONFIG_SCHED_RTDS is not set
>       +# CONFIG_SCHED_ARINC653 is not set
>       +CONFIG_SCHED_NULL=y
>       +CONFIG_SCHED_NULL_DEFAULT=y
>       +CONFIG_SCHED_DEFAULT="null"
>       +# CONFIG_SUPPRESS_DUPLICATE_SYMBOL_WARNINGS is not set
>       +
>       +#
>       +# Device Drivers
>       +#
>       +# CONFIG_HAS_NS16550 is not set
>       +# CONFIG_HAS_CADENCE_UART is not set
>       +# CONFIG_HAS_MVEBU is not set
>       +# CONFIG_HAS_PL011 is not set
>       +# CONFIG_HAS_SCIF is not set
>       +# CONFIG_ARM_SMMU is not set
>       +
>       +#
>       +# Debugging Options
>       +#
>       +# CONFIG_DEBUG is not set
>       +# CONFIG_FRAME_POINTER is not set
>       +# CONFIG_VERBOSE_DEBUG is not set
>       +# CONFIG_SCRUB_DEBUG is not set
>       --
>       1.9.1
> 
> 
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> 
> 
>

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