On Mon, Jun 23, 2014 at 10:57:31AM +0100, David Vrabel wrote: > On 20/06/14 22:29, Daniel Kiper wrote: > > This patch enables EFI usage under Xen dom0. Standard EFI Linux > > Kernel infrastructure cannot be used because it requires direct > > access to EFI data and code. However, in dom0 case it is not possible > > because above mentioned EFI stuff is fully owned and controlled > > by Xen hypervisor. In this case all calls from dom0 to EFI must > > be requested via special hypercall which in turn executes relevant > > EFI code in behalf of dom0. > > > > When dom0 kernel boots it checks for EFI availability on a machine. > > If it is detected then artificial EFI system table is filled. > > Native EFI callas are replaced by functions which mimics them > > by calling relevant hypercall. Later pointer to EFI system table > > is passed to standard EFI machinery and it continues EFI subsystem > > initialization taking into account that there is no direct access > > to EFI boot services, runtime, tables, structures, etc. After that > > system runs as usual. > > Reviewed-by: David Vrabel <david.vrabel@xxxxxxxxxx> Thanks for this and second one. > (With or without the change suggested by Stefano). I am going to take into account Stefano's idea. Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
