arm64: stacktrace: move SDEI stack helpers to stacktrace code

For clarity and ease of maintenance, it would be helpful for all the
stack helpers to be in the same place.

Move the SDEI stack helpers into the stacktrace code where all the other
stack helpers live.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Kalesh Singh <kaleshsingh@google.com>
Reviewed-by: Madhavan T. Venkataraman <madvenka@linux.microsoft.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Cc: Fuad Tabba <tabba@google.com>
Cc: James Morse <james.morse@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20220901130646.1316937-5-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

1 files changed, 39 insertions, 1 deletions

diff --git a/arch/arm64/include/asm/stacktrace.h b/arch/arm64/include/asm/stacktrace.h
index 6ebdcdff77f5..fa2df1ea22eb 100644
--- a/arch/arm64/include/asm/stacktrace.h
+++ b/arch/arm64/include/asm/stacktrace.h
@@ -54,7 +54,45 @@ static inline bool on_overflow_stack(unsigned long sp, unsigned long size,
 }
 #else
 static inline bool on_overflow_stack(unsigned long sp, unsigned long size,
-			struct stack_info *info) { return false; }
+				     struct stack_info *info)
+{
+	return false;
+}
+#endif
+
+#if defined(CONFIG_ARM_SDE_INTERFACE) && defined(CONFIG_VMAP_STACK)
+DECLARE_PER_CPU(unsigned long *, sdei_stack_normal_ptr);
+DECLARE_PER_CPU(unsigned long *, sdei_stack_critical_ptr);
+
+static inline bool on_sdei_normal_stack(unsigned long sp, unsigned long size,
+					struct stack_info *info)
+{
+	unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_normal_ptr);
+	unsigned long high = low + SDEI_STACK_SIZE;
+
+	return on_stack(sp, size, low, high, STACK_TYPE_SDEI_NORMAL, info);
+}
+
+static inline bool on_sdei_critical_stack(unsigned long sp, unsigned long size,
+					  struct stack_info *info)
+{
+	unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_critical_ptr);
+	unsigned long high = low + SDEI_STACK_SIZE;
+
+	return on_stack(sp, size, low, high, STACK_TYPE_SDEI_CRITICAL, info);
+}
+#else
+static inline bool on_sdei_normal_stack(unsigned long sp, unsigned long size,
+					struct stack_info *info)
+{
+	return false;
+}
+
+static inline bool on_sdei_critical_stack(unsigned long sp, unsigned long size,
+					  struct stack_info *info)
+{
+	return false;
+}
 #endif
 
 #endif	/* __ASM_STACKTRACE_H */