[Zesty][PATCH v2 10/11] KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number

Kleber Souza kleber.souza at canonical.com
Fri Jul 21 16:19:41 UTC 2017


Hi Ziviani,

On 07/21/17 17:50, Jose Ricardo Ziviani wrote:
> From: Alexey Kardashevskiy <aik at ozlabs.ru>
> 
> BugLink: http://bugs.launchpad.net/bugs/1686019
> 
> Small change on file include/uapi/linux/kvm.h due to conflics with
> DEFINES included by MIPS and S390 patches.
> 
> 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 <aik at ozlabs.ru>
> Reviewed-by: David Gibson <david at gibson.dropbear.id.au>
> Signed-off-by: Paul Mackerras <paulus at ozlabs.org>
> (cherry picked from commit 4898d3f49b5b156c33f0ae0f49ede417ab86195e)

In the cover letter you mentioned that you needed to resolve a conflict
in order to apply this patch. So in this case, you need to use
"backported from commit <sha1>" instead of "cherry picked from ...".

> Signed-off-by: Jose Ricardo Ziviani <joserz at linux.vnet.ibm.com>
> ---
>  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 1f50f21..655c845 100644
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
> @@ -873,6 +873,7 @@ struct kvm_ppc_smmu_info {
>  #define KVM_CAP_PPC_HTM 132
>  #define KVM_CAP_PPC_MMU_RADIX 134
>  #define KVM_CAP_PPC_MMU_HASH_V3 135
> +#define KVM_CAP_SPAPR_TCE_VFIO 142
>  
>  #ifdef KVM_CAP_IRQ_ROUTING
>  
> 




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