Hello Folks, I am very new to Xen hence forgive me if this is a naive qn. On my board I have 1 GB of Ram. When Xen launches Domain0 ie Linux , I reserved some high mem region for my driver usage. When I tried to access the reseved high memory region for my driver using ioremap it failed. I then used the mfn_to_virt func, which gave me the virtual address of the reserved high memory. Can you please help me understand how do we have a VA already assigned to the reserved high memory region and the reason for ioremap failure. Girish _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hello Folks, I am very new to Xen hence forgive me if this is a naive qn. On my board I have 1 GB of Ram. When Xen launches Domain0 ie Linux , I reserved some high mem region for my driver usage. When I tried to access the reseved high memory region for my driver using ioremap it failed. Can anybody please help me understand what could me the problem out here. When i used the mfn_to_virt for the first address of the reserved memory , i did get a virtual address and was able to write for 2 pages only. Also the high mem start which was histrocially set to 896MB has been moved to 728MB. I would appreciate for any pointers on this. Girish _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel