This is a note to let you know that I've just added the patch titled
LoongArch: Call early_init_fdt_scan_reserved_mem() earlier
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
loongarch-call-early_init_fdt_scan_reserved_mem-earlier.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9fa304b9f8ec440e614af6d35826110c633c4074 Mon Sep 17 00:00:00 2001
From: Huacai Chen <chenhuacai@xxxxxxxxxxx>
Date: Fri, 23 Feb 2024 14:36:31 +0800
Subject: LoongArch: Call early_init_fdt_scan_reserved_mem() earlier
From: Huacai Chen <chenhuacai@xxxxxxxxxxx>
commit 9fa304b9f8ec440e614af6d35826110c633c4074 upstream.
The unflatten_and_copy_device_tree() function contains a call to
memblock_alloc(). This means that memblock is allocating memory before
any of the reserved memory regions are set aside in the arch_mem_init()
function which calls early_init_fdt_scan_reserved_mem(). Therefore,
there is a possibility for memblock to allocate from any of the
reserved memory regions.
Hence, move the call to early_init_fdt_scan_reserved_mem() to be earlier
in the init sequence, so that the reserved memory regions are set aside
before any allocations are done using memblock.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 88d4d957edc707e ("LoongArch: Add FDT booting support from efi system table")
Signed-off-by: Oreoluwa Babatunde <quic_obabatun@xxxxxxxxxxx>
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/loongarch/kernel/setup.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -367,6 +367,8 @@ void __init platform_init(void)
acpi_gbl_use_default_register_widths = false;
acpi_boot_table_init();
#endif
+
+ early_init_fdt_scan_reserved_mem();
unflatten_and_copy_device_tree();
#ifdef CONFIG_NUMA
@@ -400,8 +402,6 @@ static void __init arch_mem_init(char **
check_kernel_sections_mem();
- early_init_fdt_scan_reserved_mem();
-
/*
* In order to reduce the possibility of kernel panic when failed to
* get IO TLB memory under CONFIG_SWIOTLB, it is better to allocate
Patches currently in stable-queue which might be from chenhuacai@xxxxxxxxxxx are
queue-6.6/loongarch-update-cpu_sibling_map-when-disabling-nonboot-cpus.patch
queue-6.6/loongarch-select-have_arch_seccomp-to-use-the-common.patch
queue-6.6/loongarch-vdso-disable-ubsan-instrumentation.patch
queue-6.6/loongarch-change-acpi_core_pic-nr_cpus-to-acpi_core_.patch
queue-6.6/loongarch-disable-irq-before-init_fn-for-nonboot-cpus.patch
queue-6.6/loongarch-select-arch_enable_thp_migration-instead-o.patch
queue-6.6/loongarch-call-early_init_fdt_scan_reserved_mem-earlier.patch
