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| author | Peter Wemm <peter@FreeBSD.org> | 2008-01-14 22:51:43 +0000 |
|---|---|---|
| committer | Peter Wemm <peter@FreeBSD.org> | 2008-01-14 22:51:43 +0000 |
| commit | a658a1e0a5f32e9af17dbb79451cb29f249e8b38 (patch) | |
| tree | e28f19b0d9eaa97778dffb9ff51588797fa22d71 /sys/i386 | |
| parent | dd9d15f2940c9a1e6d57525b9e386ec787577947 (diff) | |
| download | src-a658a1e0a5f32e9af17dbb79451cb29f249e8b38.tar.gz src-a658a1e0a5f32e9af17dbb79451cb29f249e8b38.zip | |
Add a CTASSERT that KERNBASE is valid. This is usually messed up by an
invalid KVA_PAGES, so add a pointer to there.
Notes
Notes:
svn path=/head/; revision=175328
Diffstat (limited to 'sys/i386')
| -rw-r--r-- | sys/i386/i386/pmap.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index 25a8ab8cc7f2..f812245a87df 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -292,6 +292,13 @@ CTASSERT(1 << PDESHIFT == sizeof(pd_entry_t)); CTASSERT(1 << PTESHIFT == sizeof(pt_entry_t)); /* + * If you get an error here, then you set KVA_PAGES wrong! See the + * description of KVA_PAGES in sys/i386/include/pmap.h. It must be + * multiple of 4 for a normal kernel, or a multiple of 8 for a PAE. + */ +CTASSERT(KERNBASE % (1 << 24) == 0); + +/* * Move the kernel virtual free pointer to the next * 4MB. This is used to help improve performance * by using a large (4MB) page for much of the kernel |