Commit 9125d576 authored Jul 06, 2020 by Andreas Schwab Committed by Greg Kroah-Hartman Jul 22, 2020

riscv: use 16KB kernel stack on 64-bit



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@suse.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
[Palmer: mention irqstack in the commit text]
Fixes: 7db91e57 ("RISC-V: Task implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent c2850138

arch/riscv/include/asm/thread_info.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -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__