| commit | c4baad50297d84bde1a7ad45e50c73adae4a2192 | [log] [tgz] |
|---|---|---|
| author | Omar Sandoval <osandov@fb.com> | Wed Feb 01 00:02:27 2017 -0800 |
| committer | Michael S. Tsirkin <mst@redhat.com> | Thu Mar 02 01:35:06 2017 +0200 |
| tree | 2efdf37fc4b48748d19ed2e3cb8a75908581fd26 | |
| parent | f889491380582b4ba2981cf0b0d7d6a40fb30ab7 [diff] |
virtio-console: avoid DMA from stack put_chars() stuffs the buffer it gets into an sg, but that buffer may be on the stack. This breaks with CONFIG_VMAP_STACK=y (for me, it manifested as printks getting turned into NUL bytes). Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com>