4 files changed, 88 insertions, 8 deletions

diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index 536c0ef4aee8..634759ac8c71 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -1,13 +1,13 @@
 menu "SoC selection"
 
 config SOC_SIFIVE
-       bool "SiFive SoCs"
-       select SERIAL_SIFIVE
-       select SERIAL_SIFIVE_CONSOLE
-       select CLK_SIFIVE
-       select CLK_SIFIVE_FU540_PRCI
-       select SIFIVE_PLIC
-       help
-         This enables support for SiFive SoC platform hardware.
+	bool "SiFive SoCs"
+	select SERIAL_SIFIVE
+	select SERIAL_SIFIVE_CONSOLE
+	select CLK_SIFIVE
+	select CLK_SIFIVE_FU540_PRCI
+	select SIFIVE_PLIC
+	help
+	  This enables support for SiFive SoC platform hardware.
 
 endmenu
diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index 420a0dbef386..e2ff95cb3390 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig
@@ -100,4 +100,28 @@ CONFIG_9P_FS=y
 CONFIG_CRYPTO_USER_API_HASH=y
 CONFIG_CRYPTO_DEV_VIRTIO=y
 CONFIG_PRINTK_TIME=y
+CONFIG_DEBUG_FS=y
+CONFIG_DEBUG_PAGEALLOC=y
+CONFIG_DEBUG_VM=y
+CONFIG_DEBUG_VM_PGFLAGS=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DEBUG_PER_CPU_MAPS=y
+CONFIG_SOFTLOCKUP_DETECTOR=y
+CONFIG_WQ_WATCHDOG=y
+CONFIG_SCHED_STACK_END_CHECK=y
+CONFIG_DEBUG_TIMEKEEPING=y
+CONFIG_DEBUG_RT_MUTEXES=y
+CONFIG_DEBUG_SPINLOCK=y
+CONFIG_DEBUG_MUTEXES=y
+CONFIG_DEBUG_RWSEMS=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
+CONFIG_STACKTRACE=y
+CONFIG_DEBUG_LIST=y
+CONFIG_DEBUG_PLIST=y
+CONFIG_DEBUG_SG=y
 # CONFIG_RCU_TRACE is not set
+CONFIG_RCU_EQS_DEBUG=y
+CONFIG_DEBUG_BLOCK_EXT_DEVT=y
+# CONFIG_FTRACE is not set
+# CONFIG_RUNTIME_TESTING_MENU is not set
+CONFIG_MEMTEST=y
diff --git a/arch/riscv/configs/rv32_defconfig b/arch/riscv/configs/rv32_defconfig
index 87ee6e62b64b..eb519407c841 100644
--- a/arch/riscv/configs/rv32_defconfig
+++ b/arch/riscv/configs/rv32_defconfig
@@ -97,4 +97,28 @@ CONFIG_9P_FS=y
 CONFIG_CRYPTO_USER_API_HASH=y
 CONFIG_CRYPTO_DEV_VIRTIO=y
 CONFIG_PRINTK_TIME=y
+CONFIG_DEBUG_FS=y
+CONFIG_DEBUG_PAGEALLOC=y
+CONFIG_DEBUG_VM=y
+CONFIG_DEBUG_VM_PGFLAGS=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DEBUG_PER_CPU_MAPS=y
+CONFIG_SOFTLOCKUP_DETECTOR=y
+CONFIG_WQ_WATCHDOG=y
+CONFIG_SCHED_STACK_END_CHECK=y
+CONFIG_DEBUG_TIMEKEEPING=y
+CONFIG_DEBUG_RT_MUTEXES=y
+CONFIG_DEBUG_SPINLOCK=y
+CONFIG_DEBUG_MUTEXES=y
+CONFIG_DEBUG_RWSEMS=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
+CONFIG_STACKTRACE=y
+CONFIG_DEBUG_LIST=y
+CONFIG_DEBUG_PLIST=y
+CONFIG_DEBUG_SG=y
 # CONFIG_RCU_TRACE is not set
+CONFIG_RCU_EQS_DEBUG=y
+CONFIG_DEBUG_BLOCK_EXT_DEVT=y
+# CONFIG_FTRACE is not set
+# CONFIG_RUNTIME_TESTING_MENU is not set
+CONFIG_MEMTEST=y
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index b2fe9d1be833..69f6678db7f3 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -46,6 +46,37 @@ static void setup_zero_page(void)
 	memset((void *)empty_zero_page, 0, PAGE_SIZE);
 }
 
+#ifdef CONFIG_DEBUG_VM
+static inline void print_mlk(char *name, unsigned long b, unsigned long t)
+{
+	pr_notice("%12s : 0x%08lx - 0x%08lx   (%4ld kB)\n", name, b, t,
+		  (((t) - (b)) >> 10));
+}
+
+static inline void print_mlm(char *name, unsigned long b, unsigned long t)
+{
+	pr_notice("%12s : 0x%08lx - 0x%08lx   (%4ld MB)\n", name, b, t,
+		  (((t) - (b)) >> 20));
+}
+
+static void print_vm_layout(void)
+{
+	pr_notice("Virtual kernel memory layout:\n");
+	print_mlk("fixmap", (unsigned long)FIXADDR_START,
+		  (unsigned long)FIXADDR_TOP);
+	print_mlm("pci io", (unsigned long)PCI_IO_START,
+		  (unsigned long)PCI_IO_END);
+	print_mlm("vmemmap", (unsigned long)VMEMMAP_START,
+		  (unsigned long)VMEMMAP_END);
+	print_mlm("vmalloc", (unsigned long)VMALLOC_START,
+		  (unsigned long)VMALLOC_END);
+	print_mlm("lowmem", (unsigned long)PAGE_OFFSET,
+		  (unsigned long)high_memory);
+}
+#else
+static void print_vm_layout(void) { }
+#endif /* CONFIG_DEBUG_VM */
+
 void __init mem_init(void)
 {
 #ifdef CONFIG_FLATMEM
@@ -56,6 +87,7 @@ void __init mem_init(void)
 	memblock_free_all();
 
 	mem_init_print_info(NULL);
+	print_vm_layout();
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD