Messages in this thread | | | From | Guo Ren <> | Date | Tue, 11 Apr 2023 09:38:18 +0800 | Subject | Re: [PATCH -next v3 1/2] riscv: kdump: Implement crashkernel=X,[high,low] |
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On Fri, Apr 7, 2023 at 8:03 PM Simon Horman <horms@kernel.org> wrote: > > On Fri, Apr 07, 2023 at 05:06:24PM +0800, Guo Ren wrote: > > On Thu, Apr 6, 2023 at 10:06 PM Chen Jiahao <chenjiahao16@huawei.com> wrote: > > > > > > On riscv, the current crash kernel allocation logic is trying to > > > allocate within 32bit addressible memory region by default, if > > > failed, try to allocate without 4G restriction. > > > > > > In need of saving DMA zone memory while allocating a relatively large > > > crash kernel region, allocating the reserved memory top down in > > > high memory, without overlapping the DMA zone, is a mature solution. > > > Here introduce the parameter option crashkernel=X,[high,low]. > > > > > > One can reserve the crash kernel from high memory above DMA zone range > > > by explicitly passing "crashkernel=X,high"; or reserve a memory range > > > below 4G with "crashkernel=X,low". > > Asked-by: Guo Ren <guoren@kernel.org> > > Perhaps 'Acked-by' :) Sorry, my typo.
Acked-by: Guo Ren <guoren@kernel.org>
-- Best Regards Guo Ren
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