Some UEFI implementations trash this register and, as we use it as a platform register, the kernel doesn't save it before calling into the UEFI runtime services. As we have a copy in tpidr_el1 restore from there when exiting the EFI environment. PR: 237234, 237055 Reviewed by: manu Tested On: Ampere eMAG MFC after: 2 weeks Sponsored by: DARPA, AFRL Sponsored by: Ampere Computing (hardware) Differential Revision: https://reviews.freebsd.org/D20127 |
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acpica | ||
arm64 | ||
cavium | ||
cloudabi32 | ||
cloudabi64 | ||
conf | ||
coresight | ||
include | ||
linux | ||
qualcomm | ||
rockchip |