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| author | Anup Patel <apatel@ventanamicro.com> | 2023-03-28 05:52:20 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-04-08 12:26:24 +0200 |
| commit | fb0f3d281b7f81a11e210783940f3798c4744179 (patch) | |
| tree | 146c5fa6ba26a9c8079ff4d908aa8d606d9af3d5 /drivers/clocksource | |
| parent | RISC-V: Treat IPIs as normal Linux IRQs (diff) | |
| download | linux-fb0f3d281b7f81a11e210783940f3798c4744179.tar.xz linux-fb0f3d281b7f81a11e210783940f3798c4744179.zip | |
RISC-V: Allow marking IPIs as suitable for remote FENCEs
To do remote FENCEs (i.e. remote TLB flushes) using IPI calls on the
RISC-V kernel, we need hardware mechanism to directly inject IPI from
the supervisor mode (i.e. RISC-V kernel) instead of using SBI calls.
The upcoming AIA IMSIC devices allow direct IPI injection from the
supervisor mode (i.e. RISC-V kernel). To support this, we extend the
riscv_ipi_set_virq_range() function so that IPI provider (i.e. irqchip
drivers can mark IPIs as suitable for remote FENCEs.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230328035223.1480939-5-apatel@ventanamicro.com
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/timer-clint.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/clocksource/timer-clint.c b/drivers/clocksource/timer-clint.c index 7ccc16dd6a76..9a55e733ae99 100644 --- a/drivers/clocksource/timer-clint.c +++ b/drivers/clocksource/timer-clint.c @@ -251,7 +251,7 @@ static int __init clint_timer_init_dt(struct device_node *np) } irq_set_chained_handler(clint_ipi_irq, clint_ipi_interrupt); - riscv_ipi_set_virq_range(rc, BITS_PER_BYTE); + riscv_ipi_set_virq_range(rc, BITS_PER_BYTE, true); clint_clear_ipi(); #endif |