On Sat, Jan 16, 2021 at 2:43 AM Wesley Zhao <zhaowei1...@thundersoft.com> wrote:
>
> I was trying to reserve some memory to save logs incase that Android panic or
> hang and then
> I can read the logs from QNX side from the memory reserved before on the
> Qualcomm 8155 hypervisor platform,
> and I find the "reserve=" parameter only support 32bit,so I made some change
> and send these patches.
See Documentation/admin-guide/kernel-parameters.txt
memmap=nn[KMG]$ss[KMG]
[KNL,ACPI] Mark specific memory as reserved.
Region of memory to be reserved is from ss to ss+nn.
Example: Exclude memory from 0x18690000-0x1869ffff
memmap=64K$0x18690000
or
memmap=0x10000$0x18690000
Some bootloaders may need an escape character
before '$',
like Grub2, otherwise '$' and the following number
will be eaten.
