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| author |   Ross Lagerwall <ross.lagerwall@citrix.com> | 2018-01-09 12:10:22 +0000 |
|---|---|---|
| committer |   Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2018-01-10 08:38:44 -0500 |
| commit | cf2acf66ad43abb39735568f55e1f85f9844e990 (patch) | |
| tree | 1098f9267ea80e9bcdf9367da3c7ba0dd847ae1c /drivers/net/ethernet/netronome/nfp/nfp_asm.h | |
| parent | xen/gntdev: Fix off-by-one error when unmapping with holes (diff) | |
| download | linux-dev-cf2acf66ad43abb39735568f55e1f85f9844e990.tar.xz linux-dev-cf2acf66ad43abb39735568f55e1f85f9844e990.zip | |
xen/gntdev: Fix partial gntdev_mmap() cleanup
When cleaning up after a partially successful gntdev_mmap(), unmap the
successfully mapped grant pages otherwise Xen will kill the domain if
in debug mode (Attempt to implicitly unmap a granted PTE) or Linux will
kill the process and emit "BUG: Bad page map in process" if Xen is in
release mode.
This is only needed when use_ptemod is true because gntdev_put_map()
will unmap grant pages itself when use_ptemod is false.
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_asm.h')
0 files changed, 0 insertions, 0 deletions