On 10/19/2015 1:53 AM, Christoffer Dall wrote:
> On Sat, Sep 26, 2015 at 04:43:28PM -0700, Mario Smarduch wrote:
>> This patch adds vcpu fields to track lazy state, save host FPEXC, and
>> offsets to fields.
>>
>> Signed-off-by: Mario Smarduch <m.smarduch@xxxxxxxxxxx>
>> ---
>> arch/arm/include/asm/kvm_host.h | 6 ++++++
>> arch/arm/kernel/asm-offsets.c | 2 ++
>> 2 files changed, 8 insertions(+)
>>
>> diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
>> index dcba0fa..194a8ef 100644
>> --- a/arch/arm/include/asm/kvm_host.h
>> +++ b/arch/arm/include/asm/kvm_host.h
>> @@ -111,6 +111,12 @@ struct kvm_vcpu_arch {
>> /* Interrupt related fields */
>> u32 irq_lines; /* IRQ and FIQ levels */
>>
>> + /* Track fp/simd lazy switch state */
>> + u32 vfp_lazy;
>
> so is this a flags field or basically a boolean? If the latter, what is
> does it mean when the field is true vs. false?
Yes it's a bool will update, and clarify comments.
>
>> +
>> + /* Save host FPEXC register to restore on vcpu put */
>> + u32 saved_fpexc;
>
> is this only the host's state? If so, why not name it host_fpexc?
That's right itis host state, will change.
>
> Thanks,
> -Christoffer
>
>> +
>> /* Exception Information */
>> struct kvm_vcpu_fault_info fault;
>>
>> diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
>> index 871b826..e1c3a41 100644
>> --- a/arch/arm/kernel/asm-offsets.c
>> +++ b/arch/arm/kernel/asm-offsets.c
>> @@ -186,6 +186,8 @@ int main(void)
>> DEFINE(VCPU_CPSR, offsetof(struct kvm_vcpu, arch.regs.usr_regs.ARM_cpsr));
>> DEFINE(VCPU_HCR, offsetof(struct kvm_vcpu, arch.hcr));
>> DEFINE(VCPU_IRQ_LINES, offsetof(struct kvm_vcpu, arch.irq_lines));
>> + DEFINE(VCPU_VFP_LAZY, offsetof(struct kvm_vcpu, arch.vfp_lazy));
>> + DEFINE(VCPU_VFP_FPEXC, offsetof(struct kvm_vcpu, arch.saved_fpexc));
>> DEFINE(VCPU_HSR, offsetof(struct kvm_vcpu, arch.fault.hsr));
>> DEFINE(VCPU_HxFAR, offsetof(struct kvm_vcpu, arch.fault.hxfar));
>> DEFINE(VCPU_HPFAR, offsetof(struct kvm_vcpu, arch.fault.hpfar));
>> --
>> 1.9.1
>>
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