Re: [Xen-devel] [PATCH v4 14/33] xen/arm: vgic: Correctly calculate GICD_TYPER.ITLinesNumber

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Thu, 2015-03-19 at 19:29 +0000, Julien Grall wrote:
> The formula of GICD_TYPER.ITLinesNumber is 32(N + 1).
> 
> As the number of SPIs suppported by the domain may not be a multiple of
> 32, we have to round up the number before using it.
> 
> At the same time remove the mask GICD_TYPE_LINES which is pointless.

I presume because something else has ensured that nr_spis is less than
the maximum value represented by the mask?

> Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>

Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>



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