On Mon, May 30, 2022 at 09:22:48AM -0400, Sasha Levin wrote: > From: Mark Brown <broonie@xxxxxxxxxx> > > [ Upstream commit 8a58bcd00e2e8d46afce468adc09fcd7968f514c ] > > We need to explicitly enumerate all the ID registers which we rely on > for CPU capabilities in __read_sysreg_by_encoding(), ID_AA64SMFR0_EL1 was > missed from this list so we trip a BUG() in paths which rely on that > function such as CPU hotplug. Add the register. > + read_sysreg_case(SYS_ID_AA64SMFR0_EL1); This won't build on v5.18 since it does not contain SME support and therefore lacks the definition for the SME feature register.
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