Re: [Qemu-devel] [PATCH 11/23] memory: add ioeventfd support

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On Mon, 25 Jul 2011, Avi Kivity wrote:

> As with the rest of the memory API, the caller associates an eventfd
> with an address, and the memory API takes care of registering or
> unregistering when the address is made visible or invisible to the
> guest.
> 
> Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
[..snip..]

> +static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
> +                                           MemoryRegionIoeventfd b)
> +{
> +    if (a.addr.start < b.addr.start) {
> +        return true;
> +    } else if (a.addr.start > b.addr.start) {
> +        return false;
> +    } else if (a.addr.size < b.addr.size) {
> +        return true;
> +    } else if (a.addr.size > b.addr.size) {
> +        return false;
> +    } else if (a.match_data < b.match_data) {
> +        return true;
> +    } else  if (a.match_data > b.match_data) {
> +        return false;
> +    } else if (a.match_data) {
> +        if (a.data < b.data) {
> +            return true;
> +        } else if (a.data > b.data) {
> +            return false;
> +        }
> +    }
> +    if (a.fd < b.fd) {
> +        return true;
> +    } else if (a.fd > b.fd) {
> +        return false;
> +    }

Braces..

> +    return false;
> +}
> +

[..snip..]

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