Hi, Resurrecting an old series [1], now that we have an in-tree user for it. For regular BAR, drivers can use pci_resize_resource to resize it to the desired size provided that it is supported by the hardware, which the driver can query using pci_rebar_get_possible_sizes. This series expands the API to work with IOV BAR as well. It also adds the additional API to allow extending the VF BAR within the original resource boundary. Thanks, -Michał [1] https://lore.kernel.org/all/20211215141626.3090807-1-michal.winiarski@xxxxxxxxx/ v1 -> v2: - Add pci_iov_resource_extend() and usage in Xe driver - Reduce the number of ifdefs (Christian) - Drop patch 2/2 from v1 (Christian) - Add a helper to avoid upsetting static analysis tools (Krzysztof) Michał Winiarski (3): PCI: Add support for VF Resizable Bar extended cap PCI: Allow extending VF BAR within original resource boundary drm/xe/pf: Extend the VF LMEM BAR drivers/gpu/drm/xe/regs/xe_bars.h | 1 + drivers/gpu/drm/xe/xe_sriov_pf.c | 8 ++ drivers/pci/iov.c | 120 +++++++++++++++++++++++++++++- drivers/pci/pci.c | 40 +++++++++- drivers/pci/pci.h | 15 +++- drivers/pci/setup-res.c | 44 +++++++++-- include/linux/pci.h | 3 + include/uapi/linux/pci_regs.h | 1 + 8 files changed, 223 insertions(+), 9 deletions(-) -- 2.46.0
