[PATCH] arm64/crashdump-arm64: increase CRASH_MAX_MEMORY_RANGES to 32k

Simon Horman horms at kernel.org
Fri Apr 29 02:58:56 PDT 2022


On Tue, Apr 26, 2022 at 08:14:15AM +0800, Baoquan He wrote:
> On 04/19/22 at 05:23pm, abuehaze14 wrote:
> > On ARM64 based VMs hotplugging more than 31GB of memory will cause
> > kdump to fail loading as it's hitting the CRASH_MAX_MEMORY_RANGES
> > limit which is currently 32 on ARM64 given that the  memory block size
> > is 1GB. This patch is raising CRASH_MAX_MEMORY_RANGES
> > to 32K similar to what we have on x86, this should allow
> > kdump to work until the VM has 32TB which should be
> > enough for a long time.
> > 
> > Signed-off-by: Hazem Mohamed Abuelfotoh <abuehaze at amazon.com>
> 
> Sounds reasonable.
> 
> Acked-by: Baoquan He <bhe at redhat.com>
> 
> By the way, Simon usually collects kexec-tools patches every one to two
> weeks, no need to always ping in a short time.

Thanks and sorry for the delay.

I have applied this patch to main.



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