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-rw-r--r--os/ports/GCC/ARMCMx/chcore_v6m.h4
-rw-r--r--os/ports/GCC/ARMCMx/chcore_v7m.h9
2 files changed, 7 insertions, 6 deletions
diff --git a/os/ports/GCC/ARMCMx/chcore_v6m.h b/os/ports/GCC/ARMCMx/chcore_v6m.h
index b76aa075a..0b0a41858 100644
--- a/os/ports/GCC/ARMCMx/chcore_v6m.h
+++ b/os/ports/GCC/ARMCMx/chcore_v6m.h
@@ -106,7 +106,7 @@ struct intctx {
* a stack frame when compiling without optimizations.
*/
#ifndef IDLE_THREAD_STACK_SIZE
-#define IDLE_THREAD_STACK_SIZE 4
+#define IDLE_THREAD_STACK_SIZE 8
#endif
/**
@@ -120,7 +120,7 @@ struct intctx {
* representing the frame of the function @p chSchDoRescheduleI().
*/
#ifndef INT_REQUIRED_STACK
-#define INT_REQUIRED_STACK 8
+#define INT_REQUIRED_STACK 16
#endif
/**
diff --git a/os/ports/GCC/ARMCMx/chcore_v7m.h b/os/ports/GCC/ARMCMx/chcore_v7m.h
index 0c8abcd41..1461a0745 100644
--- a/os/ports/GCC/ARMCMx/chcore_v7m.h
+++ b/os/ports/GCC/ARMCMx/chcore_v7m.h
@@ -96,7 +96,7 @@ struct intctx {
* reduce this value to zero when compiling with optimizations.
*/
#ifndef IDLE_THREAD_STACK_SIZE
-#define IDLE_THREAD_STACK_SIZE 4
+#define IDLE_THREAD_STACK_SIZE 8
#endif
/**
@@ -106,11 +106,12 @@ struct intctx {
* This value can be zero on those architecture where there is a
* separate interrupt stack and the stack space between @p intctx and
* @p extctx is known to be zero.
- * @note In this port it is set to 8 because the function
- * @p chSchDoRescheduleI() has a stack frame.
+ * @note In this port it is conservatively set to 16 because the function
+ * @p chSchDoRescheduleI() can have a stack frame, expecially with
+ * compiler optimizations disabled.
*/
#ifndef INT_REQUIRED_STACK
-#define INT_REQUIRED_STACK 8
+#define INT_REQUIRED_STACK 16
#endif
/**