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| author | Pallipadi, Venkatesh <[email protected]> | 2009-03-23 19:07:20 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2009-03-24 09:42:35 +0000 |
| commit | 9cdec049389ce2c324fd1ec508a71528a27d4a07 (patch) | |
| tree | 835f702631f2daeda8742c2784ee25018039d313 /Documentation/DocBook/procfs_example.c | |
| parent | Merge branches 'x86/cleanups', 'x86/mm', 'x86/setup' and 'linus' into x86/core (diff) | |
| download | kernel-9cdec049389ce2c324fd1ec508a71528a27d4a07.tar.gz kernel-9cdec049389ce2c324fd1ec508a71528a27d4a07.zip | |
x86, PAT, PCI: Change vma prot in pci_mmap to reflect inherited prot
While looking at the issue in the thread:
http://marc.info/?l=dri-devel&m=123606627824556&w=2
noticed a bug in pci PAT code and memory type setting.
PCI mmap code did not set the proper protection in vma, when it
inherited protection in reserve_memtype. This bug only affects
the case where there exists a WC mapping before X does an mmap
with /proc or /sys pci interface. This will cause X userlevel
mmap from /proc or /sysfs to fail on fork.
Reported-by: Kevin Winchester <[email protected]>
Signed-off-by: Venkatesh Pallipadi <[email protected]>
Signed-off-by: Suresh Siddha <[email protected]>
Cc: Jesse Barnes <[email protected]>
Cc: Dave Airlie <[email protected]>
Cc: <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'Documentation/DocBook/procfs_example.c')
0 files changed, 0 insertions, 0 deletions