Re: [PATCH v4 00/21] PCI: fix config space memory mappings

[Dongdong Liu]

Tested-by: Dongdong Liu <liudongdong3@xxxxxxxxxx>

I tested the patchset on HiSilicon ARM64 D05 board.It works ok with 82599 netcard.

Thanks,
Dongdong
å 2017/4/25 14:40, Jon Masters åé:
> On 04/19/2017 12:48 PM, Lorenzo Pieralisi wrote:
>
> > On some platforms (ie ARM/ARM64) ioremap fails to comply with the PCI
> > configuration non-posted write transactions requirement, because it
> > provides a memory mapping that issues "bufferable" or, in PCI terms
> > "posted" write transactions. Likewise, the current pci_remap_iospace()
> > implementation maps the physical address range that the PCI translates
> > to I/O space cycles to virtual address space through pgprot_device()
> > attributes that on eg ARM64 provides a memory mapping issuing
> > posted writes transactions, which is not PCI specifications compliant.
>
> Side note that I've pinged all of the ARM server vendors and asked them
> to verify this patch series on their platforms.
>
> Jon.
>
> .