[PATCH 28/37] KVM: arm64: Move common VHE/non-VHE trap config in separate functions

On Sat, Nov 25, 2017 at 01:43:47PM +0300, Yury Norov wrote:

On Thu, Oct 12, 2017 at 12:41:32PM +0200, Christoffer Dall wrote:

quoted

As we are about to be more lazy with some of the trap configuration
register read/writes for VHE systems, move the logic that is currently
shared between VHE and non-VHE into a separate function which can be
called from either the world-switch path or from vcpu_load/vcpu_put.

Signed-off-by: Christoffer Dall <redacted>
---
 arch/arm64/kvm/hyp/switch.c | 70 +++++++++++++++++++++++++--------------------
 1 file changed, 39 insertions(+), 31 deletions(-)

diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c
index 6a12504..c587416 100644
--- a/arch/arm64/kvm/hyp/switch.c
+++ b/arch/arm64/kvm/hyp/switch.c

@@ -23,6 +23,43 @@
 #include <asm/kvm_hyp.h>
 #include <asm/fpsimd.h>
 
+static void __hyp_text __activate_traps_common(struct kvm_vcpu *vcpu)
+{
+	/*
+	 * We are about to set CPTR_EL2.TFP to trap all floating point
+	 * register accesses to EL2, however, the ARM ARM clearly states that

ARM ARM: typo?

No.  ARM _A_rchitecture _R_eference _M_anual.

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