RISC-V: paravirt: Implement steal-time support

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When the SBI STA extension exists we can use it to implement
paravirt steal-time support. Fill in the empty pv-time functions
with an SBI STA implementation and add the Kconfig knobs allowing
it to be enabled.

Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Anup Patel <anup@brainfault.org>

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Andrew Jones 2023-12-20 17:00:16 +01:00 • committed by Anup Patel

parent 6cfc624576

commit fdf68acccf

2 changed files with 78 additions and 3 deletions

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19

arch/riscv/Kconfig

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62

arch/riscv/kernel/paravirt.c

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