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.
> +
> + /* 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.
--
Jazz is not dead. It just smells funny...
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