> Quoting [EMAIL PROTECTED] <[EMAIL PROTECTED]>:
> Subject: Re: [RFC 1/1] libmthca: CQ/DMA race on Altix
>
> ...
>
> @@ -50,6 +51,14 @@ struct mthca_alloc_pd_resp {
> __u32 reserved;
> };
>
> +struct mthca_reg_mr_abi_ver_2 {
> + struct ibv_reg_mr ibv_cmd;
> + __u32 mr_attrs;
> +#define MTHCA_MR_DMAFLUSH 0x1
> +/* flush in-flight DMA on a write to memory region (IA64_SGI_SN2 only) */
> + __u32 reserved;
> +};
> +
> struct mthca_create_cq {
> struct ibv_create_cq ibv_cmd;
> __u32 lkey;
Aren't there some unused bits in mr_attrs that we can use instead of
breaking the ABI?
--
MST
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