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powerpc/dt_cpu_ftrs: Enable Prefixed Instructions

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Prefix instructions have their own FSCR bit which needs to be enabled
via a CPU feature. The kernel will save the FSCR for problem state but
it needs to be enabled initially.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200521014341.29095-6-alistair@popple.id.au
This commit is contained in:
Alistair Popple 2020-05-21 11:43:39 +10:00 committed by Michael Ellerman
parent 43d0d37acb
commit c63d688c3d
1 changed files with 1 additions and 0 deletions
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arch/powerpc/kernel/dt_cpu_ftrs.c
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@ -634,6 +634,7 @@ static struct dt_cpu_feature_match __initdata
{"vector-binary128", feat_enable, 0},
{"vector-binary16", feat_enable, 0},
{"wait-v3", feat_enable, 0},
{"prefix-instructions", feat_enable, 0},
};
static bool __initdata using_dt_cpu_ftrs;