On Mon, Oct 05, 2015 at 07:33:13PM -0700, Mario Smarduch wrote:
> This patch adds hooks to support fp/simd lazy switch. A vcpu flag to track
> fp/simd state, and flag offset in vcpu structure.
>
> Signed-off-by: Mario Smarduch <m.smarduch@xxxxxxxxxxx>
> ---
> arch/arm64/include/asm/kvm_host.h | 3 +++
> arch/arm64/kernel/asm-offsets.c | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
> index 4562459..03f25d0 100644
> --- a/arch/arm64/include/asm/kvm_host.h
> +++ b/arch/arm64/include/asm/kvm_host.h
> @@ -157,6 +157,9 @@ struct kvm_vcpu_arch {
> /* Interrupt related fields */
> u64 irq_lines; /* IRQ and FIQ levels */
>
> + /* Track fp/simd lazy switch */
> + u32 vfp_lazy;
> +
like for the 32-bit patch set I think this could have a more meaningful
name with more clearly defined semantics, e.g. vfp_host_dirty. You
could also call it vfp_flags like the debug flags and define a specific
flag for your use...
Thanks,
-Christoffer
> /* Cache some mmu pages needed inside spinlock regions */
> struct kvm_mmu_memory_cache mmu_page_cache;
>
> diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c
> index 8d89cf8..8311da4 100644
> --- a/arch/arm64/kernel/asm-offsets.c
> +++ b/arch/arm64/kernel/asm-offsets.c
> @@ -124,6 +124,7 @@ int main(void)
> DEFINE(VCPU_HCR_EL2, offsetof(struct kvm_vcpu, arch.hcr_el2));
> DEFINE(VCPU_MDCR_EL2, offsetof(struct kvm_vcpu, arch.mdcr_el2));
> DEFINE(VCPU_IRQ_LINES, offsetof(struct kvm_vcpu, arch.irq_lines));
> + DEFINE(VCPU_VFP_LAZY, offsetof(struct kvm_vcpu, arch.vfp_lazy));
> DEFINE(VCPU_HOST_CONTEXT, offsetof(struct kvm_vcpu, arch.host_cpu_context));
> DEFINE(VCPU_HOST_DEBUG_STATE, offsetof(struct kvm_vcpu, arch.host_debug_state));
> DEFINE(VCPU_TIMER_CNTV_CTL, offsetof(struct kvm_vcpu, arch.timer_cpu.cntv_ctl));
> --
> 1.9.1
>
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