[RFC/RFT PATCH 0/6] Switch GHES ioremap_page_range() to use fixmap

[Zhengqiang]

On 2017/10/31 23:38, James Morse wrote:
> GHES is doing ioremap_page_range() in both NMI and irq context, neither
> are safe as it may sleep to allocate intermediate levels of page table.
> 
> Replace the NMI/irq GHES_IOREMAP_PAGES to use a fixmap entry each.
> 
> After this nothing uses ghes_ioremap_area or arch_apei_flush_tlb_one(),
> rip them out.
> 
> RFC as I've only build-tested this on x86. For arm64 I've tested it on a
> software model. Any more testing would be welcome. These patches are based
> on rc7.
> 


Tested-by:  Qiang Zheng <zhengqiang10 at huawei.com>

Verified on our arm64, it work for me. Thanks.

Qiang