powerpc/64: provide a helper macro to load r2 with the kernel TOC
authorNicholas Piggin <npiggin@gmail.com>
Mon, 26 Sep 2022 03:40:56 +0000 (13:40 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 28 Sep 2022 09:22:12 +0000 (19:22 +1000)
commit8e93fb33c84f68db20c0bc2821334a4c54c3e251
tree4059b8f1c36243441e504873b443362531e6a5f7
parent754f611774e4b9357a944f5b703dd291c85161cf
powerpc/64: provide a helper macro to load r2 with the kernel TOC

A later change stops the kernel using r2 and loads it with a poison
value.  Provide a PACATOC loading abstraction which can hide this
detail.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220926034057.2360083-5-npiggin@gmail.com
13 files changed:
arch/powerpc/include/asm/ppc_asm.h
arch/powerpc/kernel/exceptions-64e.S
arch/powerpc/kernel/exceptions-64s.S
arch/powerpc/kernel/head_64.S
arch/powerpc/kernel/interrupt_64.S
arch/powerpc/kernel/optprobes_head.S
arch/powerpc/kernel/trace/ftrace_low.S
arch/powerpc/kernel/trace/ftrace_mprofile.S
arch/powerpc/kvm/book3s_64_entry.S
arch/powerpc/kvm/book3s_hv_rmhandlers.S
arch/powerpc/kvm/tm.S
arch/powerpc/mm/nohash/tlb_low_64e.S
arch/powerpc/platforms/powernv/opal-wrappers.S