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Re: [Xen-devel] [RFC, v2, 1/9] hyper_dmabuf: initial upload of hyper_dmabuf drv core framework


On 04/10/2018 09:53 AM, Oleksandr Andrushchenko wrote:
On 02/14/2018 03:50 AM, Dongwon Kim wrote:
diff --git a/drivers/dma-buf/hyper_dmabuf/hyper_dmabuf_id.h


+#ifndef __HYPER_DMABUF_ID_H__
+#define __HYPER_DMABUF_ID_H__
+#define HYPER_DMABUF_ID_CREATE(domid, cnt) \
+    ((((domid) & 0xFF) << 24) | ((cnt) & 0xFFFFFF))
I would define hyper_dmabuf_id_t.id as a union or 2 separate
fields to avoid his magic

I am not sure the union would be right here because the layout will differs between big and little endian. So does that value will be passed to other guest?


Julien Grall

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