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| author | David Vrabel <david.vrabel@citrix.com> | 2012-07-09 12:39:06 +0200 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-07-19 21:51:44 +0200 |
| commit | 66a27dde9ae96e35278983f2e59bea04eb714cd0 (patch) | |
| tree | 17e7b1054153131a11ef9f437787424be5b901f1 /fs/efs | |
| parent | xen/mm: do direct hypercall in xen_set_pte() if batching is unavailable (diff) | |
| download | linux-66a27dde9ae96e35278983f2e59bea04eb714cd0.tar.xz linux-66a27dde9ae96e35278983f2e59bea04eb714cd0.zip | |
xen/mm: zero PTEs for non-present MFNs in the initial page table
When constructing the initial page tables, if the MFN for a usable PFN
is missing in the p2m then that frame is initially ballooned out. In
this case, zero the PTE (as in decrease_reservation() in
drivers/xen/balloon.c).
This is obviously safe instead of having an valid PTE with an MFN of
INVALID_P2M_ENTRY (~0).
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'fs/efs')
0 files changed, 0 insertions, 0 deletions