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| author | Bjorn Helgaas <bhelgaas@google.com> | 2020-10-21 17:58:34 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-10-21 17:58:34 +0300 |
| commit | 97d0260bf3883ea0c8b24a1293265fd3d947554c (patch) | |
| tree | 8d7a2c6761c426cab67e039d0cec47d0341083bc /drivers/pci/pci.c | |
| parent | 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 (diff) | |
| parent | 76fc8e854e3b0b4641acf596d4a59f36d9939083 (diff) | |
| download | linux-97d0260bf3883ea0c8b24a1293265fd3d947554c.tar.xz | |
Merge branch 'pci/acs'
- Enable Translation Blocking for external devices (Rajat Jain)
* pci/acs:
PCI/ACS: Enable Translation Blocking for external devices
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index a458c46d7e39..8b649b01aad3 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -876,6 +876,10 @@ static void pci_std_enable_acs(struct pci_dev *dev) /* Upstream Forwarding */ ctrl |= (cap & PCI_ACS_UF); + /* Enable Translation Blocking for external devices */ + if (dev->external_facing || dev->untrusted) + ctrl |= (cap & PCI_ACS_TB); + pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl); } |