On 5/26/2023 12:31 AM, Miao Li wrote:
This patch adds sparse mmap support in PCI bus. Sparse mmap is a capability defined in VFIO which allows multiple mmap areas in one VFIO region. In this patch, the sparse mmap regions are mapped to one continuous virtual address region that follows device-specific BAR layout. So, driver can still access all mapped sparse mmap regions by using 'bar_base_address + bar_offset'. Signed-off-by: Miao Li <miao...@intel.com> Signed-off-by: Chenbo Xia <chenbo....@intel.com> --- drivers/bus/pci/linux/pci_vfio.c | 104 +++++++++++++++++++++++++++---- drivers/bus/pci/private.h | 2 + 2 files changed, 94 insertions(+), 12 deletions(-)
Acked-by: Yahui Cao <yahui....@intel.com>
