Reference in a new issue

Blame

Copy permalink

Reference in a new issue

Copy permalink

Christian Borntraeger 3d42ca46f4 s390/mm: fix CMMA vs KSM vs others ... commit a8f60d1fad upstream. On heavy paging with KSM I see guest data corruption. Turns out that KSM will add pages to its tree, where the mapping return true for pte_unused (or might become as such later). KSM will unmap such pages and reinstantiate with different attributes (e.g. write protected or special, e.g. in replace_page or write_protect_page)). This uncovered a bug in our pagetable handling: We must remove the unused flag as soon as an entry becomes present again. Signed-of-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2017-04-27 09:10:38 +02:00
..
asm	s390/mm: fix CMMA vs KSM vs others	2017-04-27 09:10:38 +02:00
uapi/asm	s390: export header for CLP ioctl	2016-09-20 14:26:35 +02:00