[PATCH v2] MIPS: replace add_memory_region with memblock
Jiaxun Yang
jiaxun.yang at flygoat.com
Thu Oct 8 23:00:36 EDT 2020
在 2020/10/8 23:20, Serge Semin 写道:
[...]
>
>> - add_memory_region(LOONGSON_HIGHMEM_START,
>> - highmemsize << 20, BOOT_MEM_RAM);
>> -
>> - add_memory_region(LOONGSON_PCI_MEM_END + 1, LOONGSON_HIGHMEM_START -
>> - LOONGSON_PCI_MEM_END - 1, BOOT_MEM_RESERVED);
>> -
>> + memblock_add(LOONGSON_HIGHMEM_START, highmemsize << 20);
> The same question. Is it ok to discard the
> [LOONGSON_PCI_MEM_END+1:LOONGSON_HIGHMEM_START-LOONGSON_PCI_MEM_END-1] region
> removal operation?
Hi all,
I can confirm this reservation can be removed.
It was used to ensure HIGHMEM won't overlap PCI MMIO region when
firmware was unreliable.
But I do think we shouldn't care this case as an unreliable firmware
shouldn't
ship with any devices for end users.
Also it won't affect display of /proc/iomem, now we're on age of
DeviceTree :-)
Thanks.
- Jiaxun
>
> -Sergey
>
>> #endif /* !CONFIG_64BIT */
>> }
>>
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