| commit | d8b308077e984d4baf852448536ae59307efd808 | [log] [tgz] |
|---|---|---|
| author | Kevin O'Connor <kevin@koconnor.net> | Tue May 16 11:32:49 2017 -0400 |
| committer | Kevin O'Connor <kevin@koconnor.net> | Tue May 16 11:32:49 2017 -0400 |
| tree | 4c5819a7af68e88e75a725f211142cf4e900271c | |
| parent | 235a8190a05b29cb0fd2eaa3a4c9ed8cb651d96e [diff] |
smm: Backup and restore A20 on an SMI based mode switch QEMU does not store the A20 setting in the SMM cpu environment area (and it does not look like real CPUs do either). So, manually backup and restore A20 on a mode switch. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>