Re: [Xen-devel] [PATCH v10 10/10] xen/arm: make accesses to desc->status flags atomic

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Stefano,

On 08/05/2014 12:26 PM, Stefano Stabellini wrote:
> This way we don't need to take the desc->lock in order to access
> desc->status in many of the gic and vgic functions.
> 
> Using *_bit manipulation functions on desc->status is safe on arm64:
> status is an unsigned int but is the first field of a struct that
> contains pointers, therefore the alignement of the struct is at least 8
> bytes.
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxxxxx>

Regards,

-- 
Julien Grall

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