>>> On 03.07.15 at 18:25, <paul.durr...@citrix.com> wrote:
(sorry for sending this in pieces - I started this reply and then another)
> --- a/xen/include/asm-x86/hvm/vcpu.h
> +++ b/xen/include/asm-x86/hvm/vcpu.h
> @@ -42,6 +42,17 @@ struct hvm_vcpu_asid {
> uint32_t asid;
> };
>
> +/*
> + * We may read or write up to m256 as a number of device-model
> + * transactions.
> + */
> +struct hvm_mmio_cache {
> + unsigned long size;
> + uint8_t buffer[32];
> + unsigned long gla;
> + uint8_t dir;
> +};
"size" can be unsigned int (or even less, but that's not worth it) and
hence the structure size can be shrunk by putting it next to "dir".
Jan
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