On Wed, Nov 28, 2012 at 7:47 AM, Will Deacon <will.deacon@xxxxxxx> wrote:
> 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?
>
for a function prototype, how does that work?
>> +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/ ?
>
typos fixed.
Thanks,
-Christoffer
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
