This is a note to let you know that I've just added the patch titled
riscv: use 16KB kernel stack on 64-bit
to the 5.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
riscv-use-16kb-kernel-stack-on-64-bit.patch
and it can be found in the queue-5.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0cac21b02ba5f3095fd2dcc77c26a25a0b2432ed Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@xxxxxxx>
Date: Mon, 6 Jul 2020 14:32:26 +0200
Subject: riscv: use 16KB kernel stack on 64-bit
From: Andreas Schwab <schwab@xxxxxxx>
commit 0cac21b02ba5f3095fd2dcc77c26a25a0b2432ed upstream.
With the current 8KB stack size there are frequent overflows in a 64-bit
configuration. We may split IRQ stacks off in the future, but this fixes a
number of issues right now.
Signed-off-by: Andreas Schwab <schwab@xxxxxxx>
Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx>
[Palmer: mention irqstack in the commit text]
Fixes: 7db91e57a0ac ("RISC-V: Task implementation")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Palmer Dabbelt <palmerdabbelt@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/riscv/include/asm/thread_info.h | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/riscv/include/asm/thread_info.h
+++ b/arch/riscv/include/asm/thread_info.h
@@ -12,7 +12,11 @@
#include <linux/const.h>
/* thread information allocation */
+#ifdef CONFIG_64BIT
+#define THREAD_SIZE_ORDER (2)
+#else
#define THREAD_SIZE_ORDER (1)
+#endif
#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
#ifndef __ASSEMBLY__
Patches currently in stable-queue which might be from schwab@xxxxxxx are
queue-5.7/riscv-use-16kb-kernel-stack-on-64-bit.patch
