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arm64: Print the spinlock count on panic

Description

arm64: Print the spinlock count on panic

When the spinlock count is non-zero while taking a data abort we panic.
Print this count to help debugging.

Sponsored by: Arm Ltd

(cherry picked from commit fa512fcd8fe74d72b7f29a324c8cd3ca20ff25c8)

Details

Provenance
andrewAuthored on May 24 2023, 2:40 PM
Parents
rGed2d2423470d: Print registers on an arm64 spinlock data abort
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