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Message-ID: <20231204041339.9902-3-quic_obabatun@quicinc.com>
Date: Sun, 3 Dec 2023 20:13:35 -0800
From: Oreoluwa Babatunde <quic_obabatun@...cinc.com>
To: <catalin.marinas@....com>, <will@...nel.org>, <robh+dt@...nel.org>,
<frowand.list@...il.com>
CC: <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-arm-msm@...r.kernel.org>, <kernel@...cinc.com>,
Oreoluwa Babatunde <quic_obabatun@...cinc.com>
Subject: [RFC PATCH v2 2/6] of: reserved_mem: Swicth call to unflatten_device_tree() to after paging_init()
Switch call to unflatten_device_tree() to after paging_init() on other
archs to follow new order in which the reserved_mem regions are
processed.
Signed-off-by: Oreoluwa Babatunde <quic_obabatun@...cinc.com>
---
arch/loongarch/kernel/setup.c | 2 +-
arch/mips/kernel/setup.c | 3 ++-
arch/nios2/kernel/setup.c | 4 ++--
arch/openrisc/kernel/setup.c | 4 ++--
arch/powerpc/kernel/setup-common.c | 3 +++
arch/sh/kernel/setup.c | 5 ++---
arch/um/kernel/dtb.c | 1 -
arch/um/kernel/um_arch.c | 2 ++
arch/xtensa/kernel/setup.c | 4 +++-
9 files changed, 17 insertions(+), 11 deletions(-)
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
index d183a745fb85..a01051b0f9e0 100644
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -366,7 +366,6 @@ void __init platform_init(void)
acpi_gbl_use_default_register_widths = false;
acpi_boot_table_init();
#endif
- unflatten_and_copy_device_tree();
#ifdef CONFIG_NUMA
init_numa_memory();
@@ -626,6 +625,7 @@ void __init setup_arch(char **cmdline_p)
paging_init();
+ unflatten_and_copy_device_tree();
#ifdef CONFIG_KASAN
kasan_init();
#endif
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 2d2ca024bd47..d3b6c86a8037 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -667,7 +667,6 @@ static void __init arch_mem_init(char **cmdline_p)
mips_reserve_vmcore();
mips_parse_crashkernel();
- device_tree_init();
/*
* In order to reduce the possibility of kernel panic when failed to
@@ -798,6 +797,8 @@ void __init setup_arch(char **cmdline_p)
cpu_cache_init();
paging_init();
+ device_tree_init();
+
memblock_dump_all();
setup_rng_seed();
diff --git a/arch/nios2/kernel/setup.c b/arch/nios2/kernel/setup.c
index da122a5fa43b..6f1a4232b8f0 100644
--- a/arch/nios2/kernel/setup.c
+++ b/arch/nios2/kernel/setup.c
@@ -169,8 +169,6 @@ void __init setup_arch(char **cmdline_p)
early_init_fdt_reserve_self();
early_init_fdt_scan_reserved_mem();
- unflatten_and_copy_device_tree();
-
setup_cpuinfo();
copy_exception_handler(cpuinfo.exception_addr);
@@ -189,4 +187,6 @@ void __init setup_arch(char **cmdline_p)
* get kmalloc into gear
*/
paging_init();
+
+ unflatten_and_copy_device_tree();
}
diff --git a/arch/openrisc/kernel/setup.c b/arch/openrisc/kernel/setup.c
index 9cf7fb60441f..fcda33bdca19 100644
--- a/arch/openrisc/kernel/setup.c
+++ b/arch/openrisc/kernel/setup.c
@@ -255,8 +255,6 @@ void calibrate_delay(void)
void __init setup_arch(char **cmdline_p)
{
- unflatten_and_copy_device_tree();
-
setup_cpuinfo();
#ifdef CONFIG_SMP
@@ -284,6 +282,8 @@ void __init setup_arch(char **cmdline_p)
/* paging_init() sets up the MMU and marks all pages as reserved */
paging_init();
+ unflatten_and_copy_device_tree();
+
*cmdline_p = boot_command_line;
printk(KERN_INFO "OpenRISC Linux -- http://openrisc.io\n");
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 9b142b9d5187..58da58d02652 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -986,6 +986,9 @@ void __init setup_arch(char **cmdline_p)
paging_init();
+ /* Unflatten the device-tree passed by prom_init or kexec */
+ unflatten_device_tree();
+
/* Initialize the MMU context management stuff. */
mmu_context_init();
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 3d80515298d2..2553696af21b 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -322,6 +322,8 @@ void __init setup_arch(char **cmdline_p)
/* Let earlyprintk output early console messages */
sh_early_platform_driver_probe("earlyprintk", 1, 1);
+ paging_init();
+
#ifdef CONFIG_OF_EARLY_FLATTREE
#ifdef CONFIG_USE_BUILTIN_DTB
unflatten_and_copy_device_tree();
@@ -329,9 +331,6 @@ void __init setup_arch(char **cmdline_p)
unflatten_device_tree();
#endif
#endif
-
- paging_init();
-
/* Perform the machine specific initialisation */
if (likely(sh_mv.mv_setup))
sh_mv.mv_setup(cmdline_p);
diff --git a/arch/um/kernel/dtb.c b/arch/um/kernel/dtb.c
index 484141b06938..04b0ada3b929 100644
--- a/arch/um/kernel/dtb.c
+++ b/arch/um/kernel/dtb.c
@@ -26,7 +26,6 @@ void uml_dtb_init(void)
}
early_init_fdt_scan_reserved_mem();
- unflatten_device_tree();
}
static int __init uml_dtb_setup(char *line, int *add)
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index b1bfed0c8528..fe6ecaa12ef2 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -7,6 +7,7 @@
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/mm.h>
+#include <linux/of_fdt.h>
#include <linux/ctype.h>
#include <linux/module.h>
#include <linux/panic_notifier.h>
@@ -421,6 +422,7 @@ void __init setup_arch(char **cmdline_p)
read_initrd();
paging_init();
+ unflatten_device_tree();
strscpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
setup_hostinfo(host_info, sizeof host_info);
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index bdec4a773af0..d20c56b4182e 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -355,13 +355,15 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
bootmem_init();
kasan_init();
- unflatten_and_copy_device_tree();
#ifdef CONFIG_SMP
smp_init_cpus();
#endif
paging_init();
+
+ unflatten_and_copy_device_tree();
+
zones_init();
#ifdef CONFIG_VT
--
2.17.1
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