[dpdk-dev] [PATCH v2] mem: Warn once if /proc/self/pagemap is unreadable

[Thomas Monjalon]

2015-06-24 10:33, Simon Kagstrom:
> Newer kernels make this unreadable for security reasons for non-roots.
> Running the application will then fill the logs with
> 
>   rte_mem_virt2phy: cannot open /proc/self/pagemap
> 
> messages.
> 
> However, there are cases when DPDK is and should be run as non-root,
> without the need for virtual-to-physical address translations: a
> typical example is when working with PCAP input/output. This patch
> adds a start-time check for /proc/self/pagemap readability, and
> directly returns an error code from rte_mem_virt2phy().
> 
> This way, there is only a one-time warning at startup instead of
> constant warnings all the time.
> 
> Signed-off-by: Simon Kagstrom <simon.kagstrom at netinsight.net>
> Signed-off-by: Johan Faltstrom <johan.faltstrom at netinsight.net>

Applied, thanks