tree 8bd27563aeb13f3baeee3b9fa00fac9298254371
parent 52de88d67c71b50d2d5ad3149230702a165ad789
author Ming Huang <huangming@linux.alibaba.com> 1622795002 +0800
committer Ming Huang <huangming@linux.alibaba.com> 1627008480 +0800

fix(gicv3): add dsb in both disable and enable function of gicv3_cpuif

A RAS error may be triggered while offline core in OS. Error:
Uncorrected software error in the Distributor, with IERR=9,SERR=f.
Core put to sleep before its Group enables were cleared.

gicv3_cpuif_disable() will be called in offline core flow.
According to GIC architecture version 3 and version 4:
Architectural execution of a DSB instruction guarantees that
the last value written to ICC_IGRPEN0_EL1, ICC_IGRPEN1_EL1,
ICC_IGRPEN1_EL3 or GICC_CTLR.{EnableGrp0, EnableGrp1}is observed
by the associated Redistributor.
An ISB or other context synchronization operation must precede
the DSB to ensure visibility of System register writes.

Signed-off-by: Ming Huang <huangming@linux.alibaba.com>
Change-Id: Iff1475657f401374c761b5e8f2f5b3a4b2040e9d