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Clarify the lifetime of the return value of rte_mem_virt2iova #60

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Clarify the lifetime of the return value of rte_mem_virt2iova #60

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5 changes: 5 additions & 0 deletions lib/eal/linux/eal_memory.c
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Original file line number Diff line number Diff line change
Expand Up @@ -155,6 +155,11 @@ rte_mem_virt2iova(const void *virtaddr)
/*
* For each hugepage in hugepg_tbl, fill the physaddr value. We find
* it by browsing the /proc/self/pagemap special file.
*
* NOTE: Unless a kernel component (such as VFIO_NOIOMMU) locks the memory
* in place, the kernel may move the memory at any time (kcompactd, autonuma,
* etc etc) so one should only rely on this address being a constant in the
* general case.
*/
static int
find_physaddrs(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
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