| From fe15d08c24fe8f2a1cabdb929971c5e31bbe0521 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Thu, 28 Jan 2021 18:12:30 -0500 |
| Subject: parisc: Bump 64-bit IRQ stack size to 64 KB |
| |
| From: John David Anglin <dave.anglin@bell.net> |
| |
| [ Upstream commit 31680c1d1595a59e17c14ec036b192a95f8e5f4a ] |
| |
| Bump 64-bit IRQ stack size to 64 KB. |
| |
| I had a kernel IRQ stack overflow on the mx3210 debian buildd machine. This patch increases the |
| 64-bit IRQ stack size to 64 KB. The 64-bit stack size needs to be larger than the 32-bit stack |
| size since registers are twice as big. |
| |
| Signed-off-by: John David Anglin <dave.anglin@bell.net> |
| Signed-off-by: Helge Deller <deller@gmx.de> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| arch/parisc/kernel/irq.c | 4 ++++ |
| 1 file changed, 4 insertions(+) |
| |
| diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c |
| index 49cd6d2caefb..1dfb439b0692 100644 |
| --- a/arch/parisc/kernel/irq.c |
| +++ b/arch/parisc/kernel/irq.c |
| @@ -373,7 +373,11 @@ static inline int eirr_to_irq(unsigned long eirr) |
| /* |
| * IRQ STACK - used for irq handler |
| */ |
| +#ifdef CONFIG_64BIT |
| +#define IRQ_STACK_SIZE (4096 << 4) /* 64k irq stack size */ |
| +#else |
| #define IRQ_STACK_SIZE (4096 << 3) /* 32k irq stack size */ |
| +#endif |
| |
| union irq_stack_union { |
| unsigned long stack[IRQ_STACK_SIZE/sizeof(unsigned long)]; |
| -- |
| 2.30.1 |
| |
