I have the save question for the cpu_ipi_pending here: https://svnweb.freebsd.org/base/head/sys/x86/x86/mp_x86.c?view=annotate#l1080
Le jeudi 9 mars 2017, 10:43:14 Alexandre Martins a écrit : > Hello, > > I'm curently reading the code of the function smp_rendezvous_action, in > kern/subr_smp.c file. In that function, i see that the variable > smp_rv_waiters is read in some while() loop in a non-atomic way. > > https://svnweb.freebsd.org/base/head/sys/kern/subr_smp.c?view=annotate#l412 > https://svnweb.freebsd.org/base/head/sys/kern/subr_smp.c?view=annotate#l458 > https://svnweb.freebsd.org/base/head/sys/kern/subr_smp.c?view=annotate#l472 > > I suspect one of my freeze to be due by that. > > Should this function be patched to use > "atomic_load_acq_int(&smp_rv_waiters[])" ? > > Best regards -- Alexandre Martins STORMSHIELD
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