On 12/3/2015 7:46 AM, Marc Zyngier wrote:
> On 14/11/15 22:12, 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 3df1e97..f1bf551 100644
>> --- a/arch/arm/include/asm/kvm_host.h
>> +++ b/arch/arm/include/asm/kvm_host.h
>> @@ -107,6 +107,12 @@ struct kvm_vcpu_arch {
>> /* Interrupt related fields */
>> u32 irq_lines; /* IRQ and FIQ levels */
>>
>> + /* fp/simd dirty flag true if guest accessed register file */
>> + bool vfp_dirty;
>
> I think we do not need this bool, because it is already represented by
> the state of the trapping bits.
The trapping bit state is lost on exit since they're cleared, no?
>
>> +
>> + /* Save host FPEXC register to later restore on vcpu put */
>> + u32 host_fpexc;
>> +
>> /* 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..9f79712 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_DIRTY, offsetof(struct kvm_vcpu, arch.vfp_dirty));
>> + DEFINE(VCPU_VFP_HOST_FPEXC, offsetof(struct kvm_vcpu, arch.host_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));
>>
>
> Thanks,
>
> M.
>
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