Shiqing Gao e95b316dd0 hv: vtd: fix improper use of DMAR_GCMD_REG ...

The initialization of "dmar_unit->gcmd" shall be done via reading from
Global Status Register rather than Global Command Register.

Rationale:
According to Chapter 10.4.4 Global Command Register in VT-d spec, Global Command
Register is a write-only register to control remapping hardware.
Global Status Register is the corresponding read-only register to report remapping
hardware status.

Tracked-On: #1842
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>

2019-12-12 09:11:04 +08:00

..

x86

hv: vtd: fix improper use of DMAR_GCMD_REG

2019-12-12 09:11:04 +08:00