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| author | George Dunlap <george.dunlap@eu.citrix.com> | 2012-03-08 09:16:09 +0000 |
|---|---|---|
| committer | George Dunlap <george.dunlap@eu.citrix.com> | 2012-03-08 09:16:09 +0000 |
| commit | 3d9ab2267f3aff4985caf3761887538e61a10c9c (patch) | |
| tree | 2646229ab74759fb72af8d7e403c890d66bc1ada /xen | |
| parent | b5ab306e2b420d69b727df3b37679f88374f4410 (diff) | |
| download | xen-3d9ab2267f3aff4985caf3761887538e61a10c9c.tar.gz xen-3d9ab2267f3aff4985caf3761887538e61a10c9c.tar.bz2 xen-3d9ab2267f3aff4985caf3761887538e61a10c9c.zip | |
x86: Add more specific logging for get_page_from_l1e failures
This patch should clarify which of the two possible reasons cause the
messages
of the form "(XEN) mm.c:908:d1 Error getting mfn 29b2b (pfn
5555555555555555)
from L1 entry 0000000029b2b067 for l1e_owner=1, pg_owner=1".
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Committed-by: Keir Fraser <keir@xen.org>
Diffstat (limited to 'xen')
| -rw-r--r-- | xen/arch/x86/mm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c index ff2ccd95e9..c7fd5f785e 100644 --- a/xen/arch/x86/mm.c +++ b/xen/arch/x86/mm.c @@ -889,7 +889,12 @@ get_page_from_l1e( */ if ( (real_pg_owner == NULL) || (pg_owner == l1e_owner) || !IS_PRIV_FOR(pg_owner, real_pg_owner) ) + { + MEM_LOG("pg_owner %d l1e_owner %d, but real_pg_owner %d", + pg_owner->domain_id, l1e_owner->domain_id, + real_pg_owner?real_pg_owner->domain_id:-1); goto could_not_pin; + } pg_owner = real_pg_owner; } @@ -905,7 +910,10 @@ get_page_from_l1e( write = (l1f & _PAGE_RW) && ((l1e_owner == pg_owner) || !paging_mode_external(pg_owner)); if ( write && !get_page_type(page, PGT_writable_page) ) + { + MEM_LOG("Could not get page type PGT_writable_page"); goto could_not_pin; + } if ( pte_flags_to_cacheattr(l1f) != ((page->count_info & PGC_cacheattr_mask) >> PGC_cacheattr_base) ) |