On Fri, May 21, 2021 at 03:03:24AM +0000, Wang Xingang wrote: > From: Xingang Wang <[email protected]> > > When booting with devicetree, the pci_request_acs() is called after the > enumeration and initialization of PCI devices, thus the ACS is not > enabled. And ACS should be enabled when IOMMU is detected for the > PCI host bridge, so add check for IOMMU before probe of PCI host and call > pci_request_acs() to make sure ACS will be enabled when enumerating PCI > devices. > > Fixes: 6bf6c24720d33 ("iommu/of: Request ACS from the PCI core when > configuring IOMMU linkage") > Signed-off-by: Xingang Wang <[email protected]> > --- > drivers/iommu/of_iommu.c | 1 - > drivers/pci/of.c | 8 +++++++- > 2 files changed, 7 insertions(+), 2 deletions(-)
Should probably go through the PCI tree, so Acked-by: Joerg Roedel <[email protected]> _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
