tree 5429297d689ee04b06add987d8c17f6d0ae76fc1
parent 4f9b75fec7c3bafe1d554e220e51e328b57d82ef
author Bipin Ravi <bipin.ravi@arm.com> 1695076049 -0500
committer Bipin Ravi <bipin.ravi@arm.com> 1695077031 -0500

fix(cpus): workaround for Neoverse V2 erratum 2719105

Neoverse V2 erratum 2719105 is a Cat B erratum that applies to all
revisions <= r0p1 and is fixed in r0p2.

The erratum is avoided by setting CPUACTLR2_EL1[0] to 1 to force
PLDW/PFRM ST to behave like PLD/PRFM LD and not cause invalidations
to other PE caches. There might be a small performance degradation
to this workaround for certain workloads that share data.

SDEN documentation:
https://developer.arm.com/documentation/SDEN2332927/latest

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: Id026edcb7ee1ca93371ce0001d18f5a8282c49ba