Re: [Xen-devel] [PATCH v3 0/5] xen: Add EFI support

[Eric Shelton <eshelton@xxxxxxxxx>]

A reboot started by dom0 does not work.

I have applied the patches to 3.13.9 on a 64-bit Intel UEFI system.  If I bypass Xen, booting directly into the EFI stubbed linux kernel, I can do a command line reboot successfully.  However, when the same kernel is run under Xen, a command line reboot appears to proceed to the point where it should make the hypercall to Xen, but the system just hangs instead of rebooting.  I have to power cycle the system manually.

I have seen this on two different systems (a Macbook Air and an ASUS laptop).  Assuming the hypercall is being made, it seems the hypervisor is not correctly performing a reboot when booted under EFI.

On Tue, Mar 25, 2014 at 4:57 PM, Daniel Kiper <daniel.kiper@xxxxxxxxxx> wrote:

Hey,

This patch series adds EFI support for Xen dom0 guests.
It is based on Jan Beulich and Tang Liang work. I was
trying to take into account all previous comments,
however, if I missed something sorry for that.

Additionally, I attempted to leave all credits as is and
put SOB in relevant places. If I made any mistake drop me
a line and I will fix it in next version.

Feel free to play with it. I am looking forward for your comments.

Daniel

 arch/ia64/kernel/efi.c           |   30 ++++--
 arch/x86/kernel/setup.c          |    2 +-
 arch/x86/platform/efi/efi.c      |   20 ++--
 arch/x86/xen/enlighten.c         |   10 ++
 drivers/firmware/efi/efi.c       |   26 ++++++
 drivers/xen/Kconfig              |    3 +
 drivers/xen/Makefile             |    1 +
 drivers/xen/efi.c                |  425 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/linux/efi.h              |   10 ++
 include/xen/interface/platform.h |  123 +++++++++++++++++++++++-
 10 files changed, 633 insertions(+), 17 deletions(-)

Daniel Kiper (5):
      efi: Add efi_init_ops variable
      efi: Export arch_tables variable
      x86: Call efi_memblock_x86_reserve_range() on native EFI platform only
      xen: Define EFI related stuff
      xen: Put EFI machinery in place

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