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| author | Valentin Schneider <valentin.schneider@arm.com> | 2021-10-27 17:15:04 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-12-16 14:21:11 +0100 |
| commit | c0cdc89072a3e1ae3981437f385de14b7bba8fd8 (patch) | |
| tree | 644f876a78667db9a39a6477ac05bdc217357010 /drivers/irqchip | |
| parent | Linux 5.16-rc4 (diff) | |
| download | linux-c0cdc89072a3e1ae3981437f385de14b7bba8fd8.tar.xz linux-c0cdc89072a3e1ae3981437f385de14b7bba8fd8.zip | |
irqchip/gic-v3-its: Give the percpu rdist struct its own flags field
Later patches will require tracking some per-rdist status. Reuse the bytes
"lost" to padding within the __percpu rdist struct as a flags field, and
re-encode ->lpi_enabled within said flags.
No change in functionality intended.
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211027151506.2085066-2-valentin.schneider@arm.com
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index eb0882d15366..74c22741f3ce 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -46,6 +46,8 @@ #define RDIST_FLAGS_PROPBASE_NEEDS_FLUSHING (1 << 0) #define RDIST_FLAGS_RD_TABLES_PREALLOCATED (1 << 1) +#define RD_LOCAL_LPI_ENABLED BIT(0) + static u32 lpi_id_bits; /* @@ -3044,7 +3046,7 @@ static void its_cpu_init_lpis(void) phys_addr_t paddr; u64 val, tmp; - if (gic_data_rdist()->lpi_enabled) + if (gic_data_rdist()->flags & RD_LOCAL_LPI_ENABLED) return; val = readl_relaxed(rbase + GICR_CTLR); @@ -3158,7 +3160,7 @@ static void its_cpu_init_lpis(void) /* Make sure the GIC has seen the above */ dsb(sy); out: - gic_data_rdist()->lpi_enabled = true; + gic_data_rdist()->flags |= RD_LOCAL_LPI_ENABLED; pr_info("GICv3: CPU%d: using %s LPI pending table @%pa\n", smp_processor_id(), gic_data_rdist()->pend_page ? "allocated" : "reserved", @@ -5138,7 +5140,7 @@ static int redist_disable_lpis(void) * * If running with preallocated tables, there is nothing to do. */ - if (gic_data_rdist()->lpi_enabled || + if ((gic_data_rdist()->flags & RD_LOCAL_LPI_ENABLED) || (gic_rdists->flags & RDIST_FLAGS_RD_TABLES_PREALLOCATED)) return 0; |