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| author | Marc Zyngier <marc.zyngier@arm.com> | 2012-10-05 13:42:45 +0100 |
|---|---|---|
| committer | Christoffer Dall <cdall@cs.columbia.edu> | 2013-03-06 15:48:45 -0800 |
| commit | 6190920a35068a621570cca7f07f3c4477615176 (patch) | |
| tree | fb16f02b272f5b2e554c4ee9c6d965a5e790ff84 /arch/arm/kvm/handle_exit.c | |
| parent | 48762767e1c150d58c250650f8202b7d4ad65ec4 (diff) | |
ARM: KVM: move kvm_handle_wfi to handle_exit.c
It has little to do in emulate.c these days...
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm/kvm/handle_exit.c')
| -rw-r--r-- | arch/arm/kvm/handle_exit.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/kvm/handle_exit.c b/arch/arm/kvm/handle_exit.c index 301301808c4e..26ad17310a1e 100644 --- a/arch/arm/kvm/handle_exit.c +++ b/arch/arm/kvm/handle_exit.c @@ -22,6 +22,9 @@ #include <asm/kvm_coproc.h> #include <asm/kvm_mmu.h> #include <asm/kvm_psci.h> +#include <trace/events/kvm.h> + +#include "trace.h" #include "trace.h" @@ -72,6 +75,22 @@ static int handle_dabt_hyp(struct kvm_vcpu *vcpu, struct kvm_run *run) return -EFAULT; } +/** + * kvm_handle_wfi - handle a wait-for-interrupts instruction executed by a guest + * @vcpu: the vcpu pointer + * @run: the kvm_run structure pointer + * + * Simply sets the wait_for_interrupts flag on the vcpu structure, which will + * halt execution of world-switches and schedule other host processes until + * there is an incoming IRQ or FIQ to the VM. + */ +static int kvm_handle_wfi(struct kvm_vcpu *vcpu, struct kvm_run *run) +{ + trace_kvm_wfi(*vcpu_pc(vcpu)); + kvm_vcpu_block(vcpu); + return 1; +} + static exit_handle_fn arm_exit_handlers[] = { [HSR_EC_WFI] = kvm_handle_wfi, [HSR_EC_CP15_32] = kvm_handle_cp15_32, |