Messages in this thread | | | Subject | Re: [PATCH v4 00/21] PCI: fix config space memory mappings | From | Dongdong Liu <> | Date | Wed, 26 Apr 2017 18:53:30 +0800 |
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Tested-by: Dongdong Liu <liudongdong3@huawei.com>
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. > > . >
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