Re: [PATCH] arm64: dts: uniphier: add /memreserve/ for spin-table release address

From: Mark Rutland
Date: Mon Apr 18 2016 - 04:45:45 EST


On Sat, Apr 16, 2016 at 02:58:58AM +0900, Masahiro Yamada wrote:
> As Documentation/arm64/booting.txt says, the cpu-release-addr
> location should be reserved.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> ---
>
> arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi b/arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi
> index 651c9d9..90909d2 100644
> --- a/arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi
> +++ b/arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi
> @@ -42,6 +42,8 @@
> * OTHER DEALINGS IN THE SOFTWARE.
> */
>
> +/memreserve/ 0x80000100 0x00000008;
> +

Please add a comment above the memreserve to mention what it is
protecting. That helps to avoid having this cargo-culted to cases where
it is not needed.

I take it that the code for the spin-table is not in RAM, and does not
need to be protected similarly?

Assuming so:

Acked-by: Mark Rutland <mark.rutland@xxxxxxx>

Thanks,
Mark.

> / {
> compatible = "socionext,ph1-ld20";
> #address-cells = <2>;
> --
> 1.9.1
>
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