diff options
| author | Matthew Rosato <mjrosato@linux.ibm.com> | 2020-09-10 16:59:55 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2020-09-21 22:42:11 +0200 |
| commit | 12856e7acde4702b7c3238c15fcba86ff6aa507f (patch) | |
| tree | f9e0073991158db7fb74b6b0fe05444836722a1e /drivers/pci/iov.c | |
| parent | Linux 5.9-rc6 (diff) | |
| download | linux-12856e7acde4702b7c3238c15fcba86ff6aa507f.tar.xz linux-12856e7acde4702b7c3238c15fcba86ff6aa507f.zip | |
PCI/IOV: Mark VFs as not implementing PCI_COMMAND_MEMORY
For VFs, the Memory Space Enable bit in the Command Register is
hard-wired to 0.
Add a new bit to signify devices where the Command Register Memory
Space Enable bit does not control the device's response to MMIO
accesses.
Fixes: abafbc551fdd ("vfio-pci: Invalidate mmaps and block MMIO access on disabled memory")
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/pci/iov.c')
| -rw-r--r-- | drivers/pci/iov.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index b37e08c4f9d1..4afd4ee4f7f0 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -180,6 +180,7 @@ int pci_iov_add_virtfn(struct pci_dev *dev, int id) virtfn->device = iov->vf_device; virtfn->is_virtfn = 1; virtfn->physfn = pci_dev_get(dev); + virtfn->no_command_memory = 1; if (id == 0) pci_read_vf_config_common(virtfn); |