]> git.karo-electronics.de Git - karo-tx-linux.git/commit
thp, s390: disable thp for kvm host on s390
authorGerald Schaefer <gerald.schaefer@de.ibm.com>
Fri, 28 Sep 2012 00:19:22 +0000 (10:19 +1000)
committerStephen Rothwell <sfr@canb.auug.org.au>
Wed, 3 Oct 2012 06:46:50 +0000 (16:46 +1000)
commitbf8f1de334607104c2393d9126b44d7a8cc12278
treef8d7b75805d1fc8fe83578fdccd90894fb470bda
parentd270d8c819710510fa922df99cb73ddff00f2113
thp, s390: disable thp for kvm host on s390

This patch is part of the architecture backend for thp on s390.  It
disables thp for kvm hosts, because there is no kvm host hugepage support
so far.  Existing thp mappings are split by follow_page() with FOLL_SPLIT,
and future thp mappings are prevented by setting VM_NOHUGEPAGE in
mm->def_flags.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
arch/s390/mm/pgtable.c