Hi All, The following patches updates the rte_random subsystem to dynamically find the best source of the initial seed to the PRNG at run time.
The first patch enables dynamic checking for the rdseed instruction and removes the requirement for it on the execution system. It also ensures that the code to use the rdseed instruction is generated, even if the host compilation system does not support it (on x86 systems). The second patch enables dynamic checking for the getentropy() function using dlload()/dlsym() to allow the code to use getentropy() if it is available on the execution system, regardless of whether or not it was available on the compilation system. Thanks Dan ----- v2: * Fix patch apply issue. * dlclose() handle if dlsym() fails in __rte_getentropy(). v3: * Fix error checking of dlsym() in __rte_getentropy(). * Style changes recommended by Mattias. Dan Gora (2): eal: check for rdseed at run time for random seed eal: resolve getentropy at run time for random seed config/x86/meson.build | 11 +++++-- lib/librte_eal/common/rte_random.c | 53 ++++++++++++++++++++++-------- lib/librte_eal/meson.build | 3 -- mk/rte.cpuflags.mk | 9 +++-- 4 files changed, 55 insertions(+), 21 deletions(-) -- 2.24.1.425.g7034cd094b
