linux-kernel - Re: [PATCH] kvm: KVM_CAP_IOMMU only available with device assignment

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Date:	Mon, 29 Apr 2013 09:59:30 -0700
From:	Randy Dunlap <rdunlap@...radead.org>
To:	Alex Williamson <alex.williamson@...hat.com>
CC:	gleb@...hat.com, kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kvm: KVM_CAP_IOMMU only available with device assignment

On 04/29/13 09:54, Alex Williamson wrote:
> Fix build with CONFIG_PCI unset by linking KVM_CAP_IOMMU to
> device assignment config option.  It has no purpose otherwise.
> 
> Signed-off-by: Alex Williamson <alex.williamson@...hat.com>

Reported-by: Randy Dunlap <rdunlap@...radead.org>
Acked-by: Randy Dunlap <rdunlap@...radead.org>

Thanks.


> ---
>  arch/ia64/kvm/kvm-ia64.c |    2 ++
>  arch/x86/kvm/x86.c       |    2 ++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
> index dcc5607..5b2dc0d 100644
> --- a/arch/ia64/kvm/kvm-ia64.c
> +++ b/arch/ia64/kvm/kvm-ia64.c
> @@ -204,9 +204,11 @@ int kvm_dev_ioctl_check_extension(long ext)
>  	case KVM_CAP_COALESCED_MMIO:
>  		r = KVM_COALESCED_MMIO_PAGE_OFFSET;
>  		break;
> +#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
>  	case KVM_CAP_IOMMU:
>  		r = iommu_present(&pci_bus_type);
>  		break;
> +#endif
>  	default:
>  		r = 0;
>  	}
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 73e443f..f83a8e0 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -2543,9 +2543,11 @@ int kvm_dev_ioctl_check_extension(long ext)
>  	case KVM_CAP_PV_MMU:	/* obsolete */
>  		r = 0;
>  		break;
> +#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
>  	case KVM_CAP_IOMMU:
>  		r = iommu_present(&pci_bus_type);
>  		break;
> +#endif
>  	case KVM_CAP_MCE:
>  		r = KVM_MAX_MCE_BANKS;
>  		break;
> 
> --


-- 
~Randy
--
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