Re: [Xen-devel] [PATCH 5/5] xen: Disallow variable length arrays

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Sep 24, 2018 at 02:00:03PM +0100, Andrew Cooper wrote:
> Variable length arrays result in excess stack utilisation, with a risk
> of stack overflow if the length is too large.  It also results in fairly
> poor asm generation, because of requiring a divide as part of the space
> calcuation.
> 
> Xen no longer has any variable length arrays, so take the opportunity to
> formally disallow them.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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