| commit | 00a44cdaba0900c63a003e0c431f506f49376a90 | |
| author | James Morse <james.morse@arm.com> | |
| Wed, 27 Apr 2016 16:47:02 +0000 (27 17:47 +0100) | ||
| committer | Will Deacon <will.deacon@arm.com> | |
| Thu, 28 Apr 2016 11:05:46 +0000 (28 12:05 +0100) | ||
| tree | 98dbb48f951a2ecab7a0ee09e89bf09a4d754a36 | treesnapshot (tar.gz zip) |
| parent | e7227d0e528f9a96d4a866f43e20dd9b33f0e782 | commitdiff |
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>
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>
| arch/arm64/kernel/hyp-stub.S | diffblobblamehistory | |
| arch/arm64/kvm/hyp.S | diffblobblamehistory | |
| arch/arm64/kvm/hyp/hyp-entry.S | diffblobblamehistory |