-
Geoff Levand authored
Commit 68234df4 ("arm64: kill flush_cache_all()") removed the global arm64 routines cpu_reset() and cpu_soft_restart() needed by the arm64 kexec and kdump support. Add back a simplified version of cpu_soft_restart() with some changes needed for kexec in the new files cpu_reset.S, and cpu_reset.h. When a CPU is reset it needs to be put into the exception level it had when it entered the kernel. Update cpu_soft_restart() to accept an argument which signals if the reset address should be entered at EL1 or EL2, and add a new hypercall HVC_SOFT_RESTART which is used for the EL2 switch. Signed-off-by:
Geoff Levand <geoff@infradead.org> Reviewed-by:
James Morse <james.morse@arm.com> Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com>
f9076ecf