KVM: ARM: Add support for Cortex-A7

This patch adds support for running Cortex-A7 guests on Cortex-A7 hosts.

As Cortex-A7 is architecturally compatible with A15, this patch is largely just
generalising existing code. Areas where 'implementation defined' behaviour
is identical for A7 and A15 is moved to allow it to be used by both cores.

The check to ensure that coprocessor register tables are sorted correctly is
also moved in to 'common' code to avoid each new cpu doing its own check
(and possibly forgetting to do so!)

Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c
index ec98209fda71..20f8d97904af 100644
--- a/arch/arm/kvm/guest.c
+++ b/arch/arm/kvm/guest.c
@@ -190,6 +190,8 @@ int __attribute_const__ kvm_target_cpu(void)
                 return -EINVAL;
 
         switch (part_number) {
+        case ARM_CPU_PART_CORTEX_A7:
+                return KVM_ARM_TARGET_CORTEX_A7;
         case ARM_CPU_PART_CORTEX_A15:
                 return KVM_ARM_TARGET_CORTEX_A15;
         default:
@@ -202,7 +204,7 @@ int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
 {
         unsigned int i;
 
-        /* We can only do a cortex A15 for now. */
+        /* We can only cope with guest==host and only on A15/A7 (for now). */
         if (init->target != kvm_target_cpu())
                 return -EINVAL;