On Fri, 7 Apr 2023 09:15:04 +0800, Baoquan He wrote:
> Problem:
> =======
> On arm64, block and section mapping is supported to build page tables.
> However, currently it enforces to take base page mapping for the whole
> linear mapping if CONFIG_ZONE_DMA or CONFIG_ZONE_DMA32 is enabled and
> crashkernel kernel parameter is set. This will cause longer time of the
> linear mapping process during bootup and severe performance degradation
> during running time.
>
> [...]
Applied to arm64 (for-next/kdump), thanks!
[1/3] arm64: kdump : take off the protection on crashkernel memory region
https://git.kernel.org/arm64/c/0d124e96051b
[2/3] arm64: kdump: do not map crashkernel region specifically
https://git.kernel.org/arm64/c/04a2a7af3d97
[3/3] arm64: kdump: defer the crashkernel reservation for platforms with no DMA memory zones
https://git.kernel.org/arm64/c/504cae453f82
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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