From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: John David Anglin <dave.anglin@bell.net>,
Helge Deller <deller@gmx.de>, Sasha Levin <sashal@kernel.org>,
linux-parisc@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 35/40] parisc: Bump 64-bit IRQ stack size to 64 KB
Date: Wed, 24 Feb 2021 07:53:35 -0500 [thread overview]
Message-ID: <20210224125340.483162-35-sashal@kernel.org> (raw)
In-Reply-To: <20210224125340.483162-1-sashal@kernel.org>
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 e5fcfb70cc7c0..4d54aa70ea5f3 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -376,7 +376,11 @@ 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)];
--
2.27.0
parent reply other threads:[~2021-02-24 13:38 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20210224125340.483162-1-sashal@kernel.org>]
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