powerpc/powernv: wire up rng during setup_arch
The platform's RNG must be available before random_init() in order to be useful for initial seeding, which in turn means that it needs to be called from setup_arch(), rather than from an init call. Complicating things, however, is that POWER8 systems need some per-cpu state and kmalloc, which isn't available at this stage. So we split things up into an early phase and a later opportunistic phase. This commit also removes some noisy log messages that don't add much. Fixes: a4da0d50 ("powerpc: Implement arch_get_random_long/int() for powernv") Cc: stable@vger.kernel.org # v3.13+ Signed-off-by:Jason A. Donenfeld <Jason@zx2c4.com> Reviewed-by:
Christophe Leroy <christophe.leroy@csgroup.eu> [mpe: Add of_node_put(), use pnv naming, minor change log editing] Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220621140849.127227-1-Jason@zx2c4.com
parent
ca5dabcf
Please register or sign in to comment