Re: [PATCH kernel 1/9] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
On Thu, Dec 08, 2016 at 07:19:48PM +1100, Alexey Kardashevskiy wrote: > This adds a capability number for in-kernel support for VFIO on > SPAPR platform. > > The capability will tell the user space whether in-kernel handlers of > H_PUT_TCE can handle VFIO-targeted requests or not. If not, the user space > must not attempt allocating a TCE table in the host kernel via > the KVM_CREATE_SPAPR_TCE KVM ioctl because in that case TCE requests > will not be passed to the user space which is desired action in > the situation like that. > > Signed-off-by: Alexey Kardashevskiy > Reviewed-by: David Gibson Fine as far as it goes, although I wonder if you actually need a new CAP - couldn't you just add a new cap value to KVM_CAP_SPAPR_TCE? > --- > include/uapi/linux/kvm.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h > index 300ef255d1e0..810f74317987 100644 > --- a/include/uapi/linux/kvm.h > +++ b/include/uapi/linux/kvm.h > @@ -870,6 +870,7 @@ struct kvm_ppc_smmu_info { > #define KVM_CAP_S390_USER_INSTR0 130 > #define KVM_CAP_MSI_DEVID 131 > #define KVM_CAP_PPC_HTM 132 > +#define KVM_CAP_SPAPR_TCE_VFIO 133 > > #ifdef KVM_CAP_IRQ_ROUTING > -- David Gibson| I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson signature.asc Description: PGP signature
[PATCH kernel 1/9] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
This adds a capability number for in-kernel support for VFIO on SPAPR platform. The capability will tell the user space whether in-kernel handlers of H_PUT_TCE can handle VFIO-targeted requests or not. If not, the user space must not attempt allocating a TCE table in the host kernel via the KVM_CREATE_SPAPR_TCE KVM ioctl because in that case TCE requests will not be passed to the user space which is desired action in the situation like that. Signed-off-by: Alexey Kardashevskiy Reviewed-by: David Gibson --- include/uapi/linux/kvm.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 300ef255d1e0..810f74317987 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -870,6 +870,7 @@ struct kvm_ppc_smmu_info { #define KVM_CAP_S390_USER_INSTR0 130 #define KVM_CAP_MSI_DEVID 131 #define KVM_CAP_PPC_HTM 132 +#define KVM_CAP_SPAPR_TCE_VFIO 133 #ifdef KVM_CAP_IRQ_ROUTING -- 2.11.0
Re: [PATCH kernel 1/9] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
On Mon, Mar 07, 2016 at 02:41:09PM +1100, Alexey Kardashevskiy wrote: > This adds a capability number for in-kernel support for VFIO on > SPAPR platform. > > The capability will tell the user space whether in-kernel handlers of > H_PUT_TCE can handle VFIO-targeted requests or not. If not, the user space > must not attempt allocating a TCE table in the host kernel via > the KVM_CREATE_SPAPR_TCE KVM ioctl because in that case TCE requests > will not be passed to the user space which is desired action in > the situation like that. > > Signed-off-by: Alexey Kardashevskiy Reviewed-by: David Gibson > --- > include/uapi/linux/kvm.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h > index c251f06..080ffbf 100644 > --- a/include/uapi/linux/kvm.h > +++ b/include/uapi/linux/kvm.h > @@ -863,6 +863,7 @@ struct kvm_ppc_smmu_info { > #define KVM_CAP_HYPERV_SYNIC 123 > #define KVM_CAP_S390_RI 124 > #define KVM_CAP_SPAPR_TCE_64 125 > +#define KVM_CAP_SPAPR_TCE_VFIO 126 > > #ifdef KVM_CAP_IRQ_ROUTING > -- David Gibson| I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_ | _way_ _around_! http://www.ozlabs.org/~dgibson signature.asc Description: PGP signature ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
[PATCH kernel 1/9] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number
This adds a capability number for in-kernel support for VFIO on SPAPR platform. The capability will tell the user space whether in-kernel handlers of H_PUT_TCE can handle VFIO-targeted requests or not. If not, the user space must not attempt allocating a TCE table in the host kernel via the KVM_CREATE_SPAPR_TCE KVM ioctl because in that case TCE requests will not be passed to the user space which is desired action in the situation like that. Signed-off-by: Alexey Kardashevskiy --- include/uapi/linux/kvm.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index c251f06..080ffbf 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -863,6 +863,7 @@ struct kvm_ppc_smmu_info { #define KVM_CAP_HYPERV_SYNIC 123 #define KVM_CAP_S390_RI 124 #define KVM_CAP_SPAPR_TCE_64 125 +#define KVM_CAP_SPAPR_TCE_VFIO 126 #ifdef KVM_CAP_IRQ_ROUTING -- 2.5.0.rc3 ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev