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(parent: 6cef300) | patch
s390/mm: do not initialize storage keys
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 7 Oct 2013 10:12:32 +0000 (12:12 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Thu, 24 Oct 2013 15:17:00 +0000 (17:17 +0200)
commit127c1feffff8078400f01372712c600d0f9eef51
tree70c6b13e0b483459bf5e6669ac0973b35bab7c48tree | snapshot (tar.gz zip)
parent6cef30034c32ebe448c844089c4168c411feeb63commit | diff
s390/mm: do not initialize storage keys

With dirty and referenced bits implemented in software it is unnecessary
to initialize the storage key for every page. With this patch not a single
storage key operation is done for a system that does not use KVM.
For KVM set_pte_at/pgste_set_key will do the initialization for the guest
view of the storage key when the mapping for the page is established in
the host.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/include/asm/page.h diff | blob | blame | history
arch/s390/kernel/early.c diff | blob | blame | history
arch/s390/mm/pageattr.c diff | blob | blame | history