Thread (81 messages) 81 messages, 5 authors, 2024-08-06

Re: [PATCH v3 10/26] x86/numa: simplify numa_distance allocation

From: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
Date: 2024-08-02 09:56:58
Also in: linux-acpi, linux-arch, linux-arm-kernel, linux-cxl, linux-devicetree, linux-doc, linux-mips, linux-mm, linux-riscv, linux-s390, linux-sh, lkml, loongarch, nvdimm, sparclinux

On Thu,  1 Aug 2024 09:08:10 +0300
Mike Rapoport [off-list ref] wrote:
From: "Mike Rapoport (Microsoft)" <rppt@kernel.org>

Allocation of numa_distance uses memblock_phys_alloc_range() to limit
allocation to be below the last mapped page.

But NUMA initializaition runs after the direct map is populated and
there is also code in setup_arch() that adjusts memblock limit to
reflect how much memory is already mapped in the direct map.

Simplify the allocation of numa_distance and use plain memblock_alloc().

Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Tested-by: Zi Yan <ziy@nvidia.com> # for x86_64 and arm64
Seems sensible. FWIW (which might just be me not bothering to
read this one again ;) 
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 
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