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authorDavid Hildenbrand <david@redhat.com>2021-11-05 23:44:49 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-06 23:30:42 +0300
commit952eea9b01e4bbb7011329f1b7240844e61e5128 (patch)
treeb6e79196e1831003ed6e3e92f85d15934a4ce6b5 /arch/arc
parente14b41556d9ec20af60a9f672ac6f64dd450763c (diff)
downloadlinux-952eea9b01e4bbb7011329f1b7240844e61e5128.tar.xz
memblock: allow to specify flags with memblock_add_node()
We want to specify flags when hotplugging memory. Let's prepare to pass flags to memblock_add_node() by adjusting all existing users. Note that when hotplugging memory the system is already up and running and we might have concurrent memblock users: for example, while we're hotplugging memory, kexec_file code might search for suitable memory regions to place kexec images. It's important to add the memory directly to memblock via a single call with the right flags, instead of adding the memory first and apply flags later: otherwise, concurrent memblock users might temporarily stumble over memblocks with wrong flags, which will be important in a follow-up patch that introduces a new flag to properly handle add_memory_driver_managed(). Link: https://lkml.kernel.org/r/20211004093605.5830-4-david@redhat.com Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Shahab Vahedi <shahab@synopsys.com> [arch/arc] Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Jianyong Wu <Jianyong.Wu@arm.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arc')
-rw-r--r--arch/arc/mm/init.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arc/mm/init.c b/arch/arc/mm/init.c
index 59408f6a02d4..ce4e939a7f07 100644
--- a/arch/arc/mm/init.c
+++ b/arch/arc/mm/init.c
@@ -59,13 +59,13 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
low_mem_sz = size;
in_use = 1;
- memblock_add_node(base, size, 0);
+ memblock_add_node(base, size, 0, MEMBLOCK_NONE);
} else {
#ifdef CONFIG_HIGHMEM
high_mem_start = base;
high_mem_sz = size;
in_use = 1;
- memblock_add_node(base, size, 1);
+ memblock_add_node(base, size, 1, MEMBLOCK_NONE);
memblock_reserve(base, size);
#endif
}