On Tuesday, April 25, 2017 2:41 AM, Jon Masters wrote: > > 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. Good! I really want to know the result of these patches on ARM serves. Please share it with us. Good luck. Best regards, Jingoo Han > > Jon.
