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| author | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2006-03-15 20:25:50 +0100 |
|---|---|---|
| committer | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2006-03-15 20:25:50 +0100 |
| commit | a54b2baac24a08b82791ede1491f31ce9408af3f (patch) | |
| tree | e6504405ba4086d61b1aa41e0122f0828e02dca1 /extras/mini-os/mm.c | |
| parent | 7999d904265804ce344cf05a6bdf76429439f9a8 (diff) | |
| download | xen-a54b2baac24a08b82791ede1491f31ce9408af3f.tar.gz xen-a54b2baac24a08b82791ede1491f31ce9408af3f.tar.bz2 xen-a54b2baac24a08b82791ede1491f31ce9408af3f.zip | |
Implement console for Mini-os and also fix 2 bugs:
a) in initialising new page table frames
b) in initialising idle thread.
Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>
Diffstat (limited to 'extras/mini-os/mm.c')
| -rw-r--r-- | extras/mini-os/mm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/extras/mini-os/mm.c b/extras/mini-os/mm.c index c26ae2817a..6facfe04b0 100644 --- a/extras/mini-os/mm.c +++ b/extras/mini-os/mm.c @@ -380,6 +380,10 @@ void new_pt_frame(unsigned long *pt_pfn, unsigned long prev_l_mfn, "prev_l_mfn=%lx, offset=%lx\n", level, *pt_pfn, prev_l_mfn, offset); + /* We need to clear the page, otherwise we might fail to map it + as a page table page */ + memset((unsigned long*)pfn_to_virt(*pt_pfn), 0, PAGE_SIZE); + if (level == L1_FRAME) { prot_e = L1_PROT; |