Resguardo inicial

linux-7.2.3/arch/s390/Kconfig.debug

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+# SPDX-License-Identifier: GPL-2.0
+
+config EARLY_PRINTK
+	def_bool y
+
+config DEBUG_ENTRY
+	bool "Debug low-level entry code"
+	depends on DEBUG_KERNEL
+	help
+	  This option enables sanity checks in s390 low-level entry code.
+	  Some of these sanity checks may slow down kernel entries and
+	  exits or otherwise impact performance.
+
+	  If unsure, say N.
+
+config STRICT_MM_TYPECHECKS
+	bool "Strict Memory Management Type Checks"
+	depends on DEBUG_KERNEL
+	help
+	  Enable strict type checking for memory management types like pte_t
+	  and pmd_t. This generates slightly worse code and should be used
+	  for debug builds.
+
+	  If unsure, say N.
+
+config CIO_INJECT
+	bool "CIO Inject interfaces"
+	depends on DEBUG_KERNEL && DEBUG_FS
+	help
+	  This option provides a debugging facility to inject certain artificial events
+	  and instruction responses to the CIO layer of Linux kernel. The newly created
+	  debugfs user-interfaces will be at /sys/kernel/debug/s390/cio/*