There's a semantic difference between the EL1 registers that control
operation of a kernel running in EL1 and EL1 registers that only control
userspace execution in EL0.  Since we can defer saving/restoring the
latter, move them into their own function.

We also take this chance to rename the function saving/restoring the
remaining system register to make it clear this function deals with
the EL1 system registers.

No functional change.

Reviewed-by: Andrew Jones <redacted>
Signed-off-by: Christoffer Dall <redacted>
---
  arch/arm64/kvm/hyp/sysreg-sr.c | 46 +++++++++++++++++++++++++++++++-----------
  1 file changed, 34 insertions(+), 12 deletions(-)

diff --git a/arch/arm64/kvm/hyp/sysreg-sr.c b/arch/arm64/kvm/hyp/sysreg-sr.c
index 848a46eb33bf..99dd50ce483b 100644
--- a/arch/arm64/kvm/hyp/sysreg-sr.c
+++ b/arch/arm64/kvm/hyp/sysreg-sr.c

@@ -34,18 +34,27 @@ static void __hyp_text __sysreg_do_nothing(struct kvm_cpu_context *ctxt) { }
  
  static void __hyp_text __sysreg_save_common_state(struct kvm_cpu_context *ctxt)
  {
-	ctxt->sys_regs[ACTLR_EL1]	= read_sysreg(actlr_el1);