[PATCH v4 0/4] Support VFIO sparse mmap in PCI bus

[Ali Alnubani]

> -----Original Message-----
> From: Miao Li <miao.li at intel.com>
> Sent: Wednesday, May 31, 2023 8:38 AM
> To: dev at dpdk.org
> Cc: skori at marvell.com; NBU-Contact-Thomas Monjalon (EXTERNAL)
> <thomas at monjalon.net>; david.marchand at redhat.com;
> ferruh.yigit at amd.com; chenbo.xia at intel.com; yahui.cao at intel.com
> Subject: [PATCH v4 0/4] Support VFIO sparse mmap in PCI bus
> 
> This series introduces a VFIO standard capability, called sparse
> mmap to PCI bus. In linux kernel, it's defined as
> VFIO_REGION_INFO_CAP_SPARSE_MMAP. Sparse mmap means instead of
> mmap whole BAR region into DPDK process, only mmap part of the
> BAR region after getting sparse mmap information from kernel.
> For the rest of BAR region that is not mmap-ed, DPDK process
> can use pread/pwrite system calls to access. Sparse mmap is
> useful when kernel does not want userspace to mmap whole BAR
> region, or kernel wants to control over access to specific BAR
> region. Vendors can choose to enable this feature or not for
> their devices in their specific kernel modules.
> 

Hello,

I see the build failure Patrick reported as well and can confirm it's caused by 095cf6e68b28 ("bus/pci: introduce MMIO read/write").
Bugzilla ticket: https://bugs.dpdk.org/show_bug.cgi?id=1245

Regards,
Ali