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| author | Jason Wang <jasowang@redhat.com> | 2024-07-01 11:31:59 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-08-14 13:58:55 +0200 |
| commit | 2ac6deb9998b8982fcf65f536dfce50f5935c8ea (patch) | |
| tree | 5f4b6d4a9235480319dddd353b621ebd14b6f4db /include/linux | |
| parent | b9d604933d5fd72dd37f24e1dc35f778297d745a (diff) | |
| download | linux-2ac6deb9998b8982fcf65f536dfce50f5935c8ea.tar.gz linux-2ac6deb9998b8982fcf65f536dfce50f5935c8ea.tar.bz2 linux-2ac6deb9998b8982fcf65f536dfce50f5935c8ea.zip | |
vhost-vdpa: switch to use vmf_insert_pfn() in the fault handler
commit 0823dc64586ba5ea13a7d200a5d33e4c5fa45950 upstream.
remap_pfn_page() should not be called in the fault handler as it may
change the vma->flags which may trigger lockdep warning since the vma
write lock is not held. Actually there's no need to modify the
vma->flags as it has been set in the mmap(). So this patch switches to
use vmf_insert_pfn() instead.
Reported-by: Dragos Tatulea <dtatulea@nvidia.com>
Tested-by: Dragos Tatulea <dtatulea@nvidia.com>
Fixes: ddd89d0a059d ("vhost_vdpa: support doorbell mapping via mmap")
Cc: stable@vger.kernel.org
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20240701033159.18133-1-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions