[PATCH] riscv: use 16KB kernel stack on 64-bit

Andreas Schwab
2020-07-06T12:32:29Z

With the current 8KB stack size there are frequent overflows in a 64-bit
configuration.

Signed-off-by: Andreas Schwab <schwab@suse.de>
---
arch/riscv/include/asm/thread_info.h | 4 ++++
1 file changed, 4 insertions(+)

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__
--
2.26.2

--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."