diff options
| author | David Vrabel <david.vrabel@citrix.com> | 2012-07-09 11:39:06 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-07-19 15:51:44 -0400 |
| commit | 66a27dde9ae96e35278983f2e59bea04eb714cd0 (patch) | |
| tree | 17e7b1054153131a11ef9f437787424be5b901f1 /mm/mremap.c | |
| parent | d095d43e78dd811d5c02c25e207c3364019b5a77 (diff) | |
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 'mm/mremap.c')
0 files changed, 0 insertions, 0 deletions