[PATCH 0/3] OvmfPkg: broadcast SMIs and revert to traditional AP sync mode

[Laszlo Ersek <lersek@redhat.com>]

Spurred by Jiewen's and Jeff's recent SMM-related work, Paolo and I
stress-tested OVMF's SMM a little bit, and with S3 it turns out to be
less stable than ideal.

Paolo agreed / suggested that we add a broadcast SMI mode to QEMU, and
utilize it from OVMF:

  https://www.mail-archive.com/edk2-devel@lists.01.org/msg19669.html

I sent the QEMU patch a few minutes (or hours?) ago:

  http://lists.nongnu.org/archive/html/qemu-devel/2016-11/msg02687.html

and these are the OVMF patches that put the QEMU functionality to use.

With these patches (and with Jeff's just-committed series for
<https://bugzilla.tianocore.org/show_bug.cgi?id=216>) I see stable and
reliable behavior with SMM+S3. Please see

  https://lists.01.org/pipermail/edk2-devel/2016-November/004682.html

for details.

Repo:   https://github.com/lersek/edk2/
Branch: broadcast_smi
BZ:     https://bugzilla.tianocore.org/show_bug.cgi?id=230

Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>

Thanks
Laszlo

Laszlo Ersek (3):
  OvmfPkg/SmmControl2Dxe: select broadcast SMI
  OvmfPkg: revert "any AP in SMM should not wait for the BSP for more
    than 100 ms"
  OvmfPkg: revert "use relaxed AP SMM synchronization mode"

 OvmfPkg/OvmfPkgIa32.dsc                       |  2 --
 OvmfPkg/OvmfPkgIa32X64.dsc                    |  2 --
 OvmfPkg/OvmfPkgX64.dsc                        |  2 --
 OvmfPkg/Include/IndustryStandard/Q35MchIch9.h |  6 ++++--
 OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.c       | 18 +++++++++++++++++-
 5 files changed, 21 insertions(+), 9 deletions(-)

-- 
2.9.2