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| author | George Dunlap <dunlapg@umich.edu> | 2006-11-14 11:21:26 -0500 |
|---|---|---|
| committer | George Dunlap <dunlapg@umich.edu> | 2006-11-14 11:21:26 -0500 |
| commit | 1811ef92771082054f79dfb8f00dfe23e1ecd023 (patch) | |
| tree | 626624642b2ca56a2af9da9a7c1bc890f21cb540 /extras/mini-os/sched.c | |
| parent | 1a9e089e65ffba498e5c77fb5b17badd73814449 (diff) | |
| download | xen-1811ef92771082054f79dfb8f00dfe23e1ecd023.tar.gz xen-1811ef92771082054f79dfb8f00dfe23e1ecd023.tar.bz2 xen-1811ef92771082054f79dfb8f00dfe23e1ecd023.zip | |
[XEN] Fix the "early unshadow" optimization to look at the entire pte.
The optimization is designed to detect pagetable destruction, but re-uses the
pagetable entries to store data under certain conditions (paging, zeroing, &c);
sometimes the lower 8 bits are 0. These "false positives" cause unnecessary
shadowing and unshadowing.
Signed-off-by: George Dunlap <gdunlap@xensource.com>
Diffstat (limited to 'extras/mini-os/sched.c')
0 files changed, 0 insertions, 0 deletions