On 1/19/17 8:34 PM, Daniel Kiper wrote: > diff --git a/xen/arch/x86/efi/efi-boot.h b/xen/arch/x86/efi/efi-boot.h > index 62c010e..c1285ad 100644 > --- a/xen/arch/x86/efi/efi-boot.h > +++ b/xen/arch/x86/efi/efi-boot.h
> + > + efi_exit_boot(ImageHandle, SystemTable); > + > + /* Return highest allocated memory address below 1 MiB. */ > + return cfg.addr + cfg.size; So my comment about overwriting memory on 02/10 was spot on but made the incorrect conclusion that it was before hand and not after. And here's the issue. I believe what you meant to do was: return cfg.addr + MBI_SIZE; I can't see how this booted for you with OVMF because for all the different versions I've tried with the original code its writing over reserved memory that QEMU uses for the graphics buffers. Which immediately results in the trampolines being overwritten with console data. -- Doug Goldstein
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