Re: [PATCH] arm64: kdump: Do not allocate crash low memory if not needed

2022-05-16 Thread Catalin Marinas
On Wed, 11 May 2022 11:20:32 +0800, Zhen Lei wrote: > When "crashkernel=X,high" is specified, the specified "crashkernel=Y,low" > memory is not required in the following corner cases: > 1. If both CONFIG_ZONE_DMA and CONFIG_ZONE_DMA32 are disabled, it means >that the devices can access any

Re: [PATCH] arm64: kdump: Do not allocate crash low memory if not needed

2022-05-11 Thread Baoquan He
On 05/11/22 at 05:50pm, Leizhen (ThunderTown) wrote: > > > On 2022/5/11 17:06, Baoquan He wrote: > > On 05/11/22 at 11:20am, Zhen Lei wrote: > >> When "crashkernel=X,high" is specified, the specified "crashkernel=Y,low" > >> memory is not required in the following corner cases: > >> 1. If both

Re: [PATCH] arm64: kdump: Do not allocate crash low memory if not needed

2022-05-11 Thread Baoquan He
On 05/11/22 at 11:20am, Zhen Lei wrote: > When "crashkernel=X,high" is specified, the specified "crashkernel=Y,low" > memory is not required in the following corner cases: > 1. If both CONFIG_ZONE_DMA and CONFIG_ZONE_DMA32 are disabled, it means >that the devices can access any memory. > 2. If