LoongArch/smp: Call rcutree_report_cpu_starting() at tlb_init()

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[ Upstream commit 5056c596c3 ]

Machines which have more than 8 nodes fail to boot SMP after commit
a2ccf46333 ("LoongArch/smp: Call rcutree_report_cpu_starting()
earlier"). Because such machines use tlb-based per-cpu base address
rather than dmw-based per-cpu base address, resulting per-cpu variables
can only be accessed after tlb_init(). But rcutree_report_cpu_starting()
is now called before tlb_init() and accesses per-cpu variables indeed.

Since the original patch want to avoid the lockdep warning caused by
page allocation in tlb_init(), we can move rcutree_report_cpu_starting()
to tlb_init() where after tlb exception configuration but before page
allocation.

Fixes: a2ccf46333 ("LoongArch/smp: Call rcutree_report_cpu_starting() earlier")
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Huacai Chen 2024-01-26 16:22:07 +08:00 • committed by Greg Kroah-Hartman

parent 19d73c253a

commit 3cb11d1896

2 changed files with 10 additions and 7 deletions

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arch/loongarch/kernel/smp.c

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16

arch/loongarch/mm/tlb.c

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