From: Andre Przywara <andre.przywara@xxxxxxxxxx>
kvm_target_cpus() checks the compatibility of the used CPU with
KVM, which is currently limited to ARM Cortex-A15 cores.
However by calling it only once on any random CPU it assumes that
all cores are the same, which is not necessarily the case (for example
in Big.Little).
[ I cut some of the commit message and changed the formatting of the
code slightly to pass checkpatch and look more like the rest of the
kvm/arm init code - Christoffer ]
Signed-off-by: Andre Przywara <andre.przywara@xxxxxxxxxx>
Signed-off-by: Christoffer Dall <cdall@xxxxxxxxxxxxxxx>
---
arch/arm/kvm/arm.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 089c0a4..5bc99b4 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -947,21 +947,30 @@ out_err:
return err;
}
+static void check_kvm_target_cpu(void *ret)
+{
+ *(int *)ret = kvm_target_cpu();
+}
+
/**
* Initialize Hyp-mode and memory mappings on all CPUs.
*/
int kvm_arch_init(void *opaque)
{
int err;
+ int ret, cpu;
if (!is_hyp_mode_available()) {
kvm_err("HYP mode not available\n");
return -ENODEV;
}
- if (kvm_target_cpu() < 0) {
- kvm_err("Target CPU not supported!\n");
- return -ENODEV;
+ for_each_online_cpu(cpu) {
+ smp_call_function_single(cpu, check_kvm_target_cpu, &ret, 1);
+ if (ret < 0) {
+ kvm_err("Error, CPU %d not supported!\n", cpu);
+ return -ENODEV;
+ }
}
err = init_hyp_mode();
--
1.7.9.5
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