tree 98dbb48f951a2ecab7a0ee09e89bf09a4d754a36
parent e7227d0e528f9a96d4a866f43e20dd9b33f0e782
author James Morse <james.morse@arm.com> 1461775622 +0100
committer Will Deacon <will.deacon@arm.com> 1461841546 +0100

arm64: kvm: Move lr save/restore from do_el2_call into EL1

Today the 'hvc' calling KVM or the hyp-stub is expected to preserve all
registers. KVM saves/restores the registers it needs on the EL2 stack using
do_el2_call(). The hyp-stub has no stack, later patches need to be able to
be able to clobber the link register.

Move the link register save/restore to the the call sites.

Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>