kernel/linux.git - Linux kernel stable tree (mirror)

Age	Commit message (Collapse)	Author	Files	Lines
2023-12-05	arm64: irq: set the correct node for VMAP stack	Huang Shijie	1	-0/+2
	In current code, init_irq_stacks() will call cpu_to_node(). The cpu_to_node() depends on percpu "numa_node" which is initialized in: arch_call_rest_init() --> rest_init() -- kernel_init() --> kernel_init_freeable() --> smp_prepare_cpus() But init_irq_stacks() is called in init_IRQ() which is before arch_call_rest_init(). So in init_irq_stacks(), the cpu_to_node() does not work, it always return 0. In NUMA, it makes the node 1 cpu accesses the IRQ stack which is in the node 0. This patch fixes it by: 1.) export the early_cpu_to_node(), and use it in the init_irq_stacks(). 2.) change init_irq_stacks() to __init function. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Huang Shijie <shijie@os.amperecomputing.com> Link: https://lore.kernel.org/r/20231124031513.81548-1-shijie@os.amperecomputing.com Signed-off-by: Will Deacon <will@kernel.org>
2021-01-15	numa: Move numa implementation to common code	Atish Patra	1	-0/+52
	ARM64 numa implementation is generic enough that RISC-V can reuse that implementation with very minor cosmetic changes. This will help both ARM64 and RISC-V in terms of maintanace and feature improvement Move the numa implementation code to common directory so that both ISAs can reuse this. This doesn't introduce any function changes for ARM64. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>