RISC-V: Fix hartid mask handling for hartid 31 and up

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Jessica reports that using "1 << hartid" causes undefined behavior for
hartid 31 and up.

Fix this by using the BIT() helper instead of an explicit shift.

Reported-by: Jessica Clarke <jrtc27@jrtc27.com>
Fixes: 26fb751ca3 ("RISC-V: Do not use cpumask data structure for hartid bitmap")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Geert Uytterhoeven 2022-01-31 14:26:20 +01:00 • committed by Palmer Dabbelt

parent 6df2a016c0

commit 12f4a665cc

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arch/riscv/kernel/sbi.c

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