Just a bunch of typos in this one :)
On Sat, Nov 10, 2012 at 03:44:30PM +0000, Christoffer Dall wrote:
> From: Marc Zyngier <marc.zyngier@xxxxxxx>
>
> When an interrupt occurs for the guest, it is sometimes necessary
> to find out which vcpu was running at that point.
>
> Keep track of which vcpu is being tun in kvm_arch_vcpu_ioctl_run(),
run
> and allow the data to be retrived using either:
retrieved
> - kvm_arm_get_running_vcpu(): returns the vcpu running at this point
> on the current CPU. Can only be used in a non-preemptable context.
preemptible
> - kvm_arm_get_running_vcpus(): returns the per-CPU variable holding
> the the running vcpus, useable for per-CPU interrupts.
-the
usable
> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
> Signed-off-by: Christoffer Dall <c.dall@xxxxxxxxxxxxxxxxxxxxxx>
> ---
> arch/arm/include/asm/kvm_host.h | 10 ++++++++++
> arch/arm/kvm/arm.c | 30 ++++++++++++++++++++++++++++++
> 2 files changed, 40 insertions(+)
>
> diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
> index e7fc249..e66cd56 100644
> --- a/arch/arm/include/asm/kvm_host.h
> +++ b/arch/arm/include/asm/kvm_host.h
> @@ -154,4 +154,14 @@ static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
> {
> return 0;
> }
> +
> +struct kvm_vcpu *kvm_arm_get_running_vcpu(void);
> +struct kvm_vcpu __percpu **kvm_get_running_vcpus(void);
DECLARE_PER_CPU?
> +int kvm_arm_copy_coproc_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
> +unsigned long kvm_arm_num_coproc_regs(struct kvm_vcpu *vcpu);
> +struct kvm_one_reg;
> +int kvm_arm_coproc_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *);
> +int kvm_arm_coproc_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *);
> +
> #endif /* __ARM_KVM_HOST_H__ */
> diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
> index 2cdc07b..60b119a 100644
> --- a/arch/arm/kvm/arm.c
> +++ b/arch/arm/kvm/arm.c
> @@ -53,11 +53,38 @@ static DEFINE_PER_CPU(unsigned long, kvm_arm_hyp_stack_page);
> static struct vfp_hard_struct __percpu *kvm_host_vfp_state;
> static unsigned long hyp_default_vectors;
>
> +/* Per-CPU variable containing the currently running vcpu. */
> +static DEFINE_PER_CPU(struct kvm_vcpu *, kvm_arm_running_vcpu);
> +
> /* The VMID used in the VTTBR */
> static atomic64_t kvm_vmid_gen = ATOMIC64_INIT(1);
> static u8 kvm_next_vmid;
> static DEFINE_SPINLOCK(kvm_vmid_lock);
>
> +static void kvm_arm_set_running_vcpu(struct kvm_vcpu *vcpu)
> +{
> + BUG_ON(preemptible());
> + __get_cpu_var(kvm_arm_running_vcpu) = vcpu;
> +}
> +
> +/**
> + * kvm_arm_get_running_vcpu - get the vcpu running on the current CPU.
> + * Must be called from non-preemptible context
> + */
> +struct kvm_vcpu *kvm_arm_get_running_vcpu(void)
> +{
> + BUG_ON(preemptible());
> + return __get_cpu_var(kvm_arm_running_vcpu);
> +}
> +
> +/**
> + * kvm_arm_get_running_vcpus - get the per-CPU array on currently running vcpus.
> + */
s/on/of/ ?
Will
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