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arm64: Clear FPU flags in the pcb in cpu_copy_thread().

Description

arm64: Clear FPU flags in the pcb in cpu_copy_thread().

New threads start off with clean FPU state instead of inheriting state
from the parent thread.

PR: 247945
Sponsored by: Netflix

Details

Provenance
jhbAuthored on Jan 8 2021, 10:56 PM
Differential Revision
D28183: arm64: Clear FPU flags in the pcb in cpu_copy_thread().
Parents
rGc7f3aa34cf0e: arm64: Trim duplicate code from cpu_fork_kthread_handler().
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