Re: [PATCH v7 00/24] KVM: arm64: SMMUv3 driver for pKVM (trap and emulate)

[Mostafa Saleh <smostafa@google.com>]

On Tue, Aug 25, 2026 at 05:59:50PM -0300, Jason Gunthorpe wrote:
> > This is v7 of pKVM SMMUv3 support with trap and emulate
> 
> I tried to compile it:
> 
> ld.lld-21: error: undefined symbol: __kvm_nvhe_iova_bitmap_set
> >>> referenced by __kvm_nvhe_io-pgtable-arm.c
> >>>               arch/arm64/kvm/hyp/nvhe/kvm_nvhe.o:(__kvm_nvhe_visit_dirty) in archive vmlinux.a
> 
> I think it is because I have CONFIG_IOMMUFD turned on.
> 
> -#if IS_ENABLED(CONFIG_IOMMUFD_DRIVER)
> +#if IS_ENABLED(CONFIG_IOMMUFD_DRIVER) && !IS_ENABLED(__KVM_NVHE_HYPERVISOR__)
>  struct iova_bitmap *iova_bitmap_alloc(unsigned long iova, size_t length,
> 
> ?

Ah, I don't think I tested that config, sorry about that, I will fix
it in the next version, I think I will just stub it in the hypervisor
if possible.

Thanks,
Mostafa

> 
> -- 
> Jason