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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2012-05-09 18:27:38 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-05-16 16:42:41 +0400 |
| commit | 2739b6d12407792f253b7a15233930338e6831c9 (patch) | |
| tree | 312fe315052d2e7476413bb4ee2f23f641773f7d /arch/s390 | |
| parent | ae73c76ab706a4f8d7e0bf92273242e7e1b43772 (diff) | |
| download | linux-2739b6d12407792f253b7a15233930338e6831c9.tar.xz | |
s390/kvm: bad rss-counter state
commit c3f0327f8e9d7a503f0d64573c311eddd61f197d
mm: add rss counters consistency check
detected the following problem with kvm on s390:
BUG: Bad rss-counter state mm:00000004f73ef000 idx:0 val:-10
BUG: Bad rss-counter state mm:00000004f73ef000 idx:1 val:-5
We have to make sure that we accumulate all rss values into
the mm before we replace the mm to avoid triggering this (harmless)
bug message.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/mm/pgtable.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index 6e765bf00670..a3db5a3ea083 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -822,6 +822,8 @@ int s390_enable_sie(void) /* we copy the mm and let dup_mm create the page tables with_pgstes */ tsk->mm->context.alloc_pgste = 1; + /* make sure that both mms have a correct rss state */ + sync_mm_rss(tsk->mm); mm = dup_mm(tsk); tsk->mm->context.alloc_pgste = 0; if (!mm) |