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author | Jason Gunthorpe <jgg@nvidia.com> | 2022-12-07 23:44:43 +0300 |
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committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-12-09 22:24:30 +0300 |
commit | d6c55c0a20e5059abdde81713ddf6324a946eb3c (patch) | |
tree | 4776645a117fe8140102f412a04b20f451a40bd6 /lib/Kconfig | |
parent | a26fa392068d1dcdf781397b7a7dd908dd68f030 (diff) | |
download | linux-d6c55c0a20e5059abdde81713ddf6324a946eb3c.tar.xz |
iommufd: Change the order of MSI setup
Eric points out this is wrong for the rare case of someone using
allow_unsafe_interrupts on ARM. We always have to setup the MSI window in
the domain if the iommu driver asks for it.
Move the iommu_get_msi_cookie() setup to the top of the function and
always do it, regardless of the security mode. Add checks to
iommufd_device_setup_msi() to ensure the driver is not doing something
incomprehensible. No current driver will set both a HW and SW MSI window,
or have more than one SW MSI window.
Fixes: e8d57210035b ("iommufd: Add kAPI toward external drivers for physical devices")
Link: https://lore.kernel.org/r/3-v1-0362a1a1c034+98-iommufd_fixes1_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reported-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'lib/Kconfig')
0 files changed, 0 insertions, 0 deletions