Tested-by: Dongdong Liu <liudongdong3@xxxxxxxxxx>
I tested the patchset on HiSilicon ARM64 D05 board.It works ok with 82599 netcard.
Thanks,
Dongdong
在 2017/4/25 14:40, Jon Masters 写道:
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.
.
