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Date: Mon, 8 Jan 2018 07:38:41 -0800
From: Stephen Hemminger <stephen@networkplumber.org>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: dev@dpdk.org, stable@dpdk.org, jianfeng.tan@intel.com,
santosh.shukla@caviumnetworks.com, anatoly.burakov@intel.com,
thomas@monjalon.net, peterx@redhat.com
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Subject: Re: [dpdk-dev] [PATCH] bus/pci: forbid VA as IOVA mode if IOMMU
address width too small
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On Mon, 8 Jan 2018 14:51:27 +0100
Maxime Coquelin <maxime.coquelin@redhat.com> wrote:
> +static inline bool
> +pci_one_device_iommu_support_va(struct rte_pci_device *dev)
> +{
> +#if defined(RTE_ARCH_PPC_64)
> + return false;
> +#elif defined(RTE_ARCH_X86)
> +
The cleaner way to handle this kind of ifdef is:
#ifdef RTE_ARCH_X86
static bool
pci_one_device_iommu_support_va(struct rte_pci_device *dev)
{
....
}
#elif defined(RTE_ARCH_PPC_64)
static inline bool
pci_one_device_iommu_support_va(struct rte_pci_device *dev)
{
return false;
}
#endif
What about AMD64?
Do all ARM processors have IOMMU, I think not.