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authorAndreas Schwab <schwab@suse.de>2020-07-06 14:32:26 +0200
committerPalmer Dabbelt <palmerdabbelt@google.com>2020-07-14 13:40:04 -0700
commit0cac21b02ba5f3095fd2dcc77c26a25a0b2432ed (patch)
tree389ff7b5b6ab36036c948127dec2722ce32aa334 /arch
parent11ba468877bb23f28956a35e896356252d63c983 (diff)
riscv: use 16KB kernel stack on 64-bit
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: 7db91e57a0ac ("RISC-V: Task implementation") Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/riscv/include/asm/thread_info.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h
index 1dd12a0cbb2b..464a2bbc97ea 100644
--- 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__