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| author | Huacai Chen <chenhuacai@loongson.cn> | 2024-01-26 11:22:07 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2024-01-26 11:22:07 +0300 |
| commit | 5056c596c3d1848021a4eaa76ee42f4c05c50346 (patch) | |
| tree | 3ecd98925c625312d67cd30c12e12a4eeb4a68ba /arch/loongarch/kernel | |
| parent | 6613476e225e090cc9aad49be7fa504e290dd33d (diff) | |
| download | linux-5056c596c3d1848021a4eaa76ee42f4c05c50346.tar.xz | |
LoongArch/smp: Call rcutree_report_cpu_starting() at tlb_init()
Machines which have more than 8 nodes fail to boot SMP after commit
a2ccf46333d7b2cf96 ("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: a2ccf46333d7b2cf96 ("LoongArch/smp: Call rcutree_report_cpu_starting() earlier")
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/kernel')
| -rw-r--r-- | arch/loongarch/kernel/smp.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c index a16e3dbe9f09..2b49d30eb7c0 100644 --- a/arch/loongarch/kernel/smp.c +++ b/arch/loongarch/kernel/smp.c @@ -509,7 +509,6 @@ asmlinkage void start_secondary(void) sync_counter(); cpu = raw_smp_processor_id(); set_my_cpu_offset(per_cpu_offset(cpu)); - rcutree_report_cpu_starting(cpu); cpu_probe(); constant_clockevent_init(); |