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(parent: 0587d40) | patch
s390/pgtable: fix mprotect for single-threaded KVM guests
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Tue, 27 Aug 2013 06:19:27 +0000 (08:19 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 28 Aug 2013 07:19:28 +0000 (09:19 +0200)
commit0196c642f76c469c17ca09d7f904bccc123bac09
treec5b7dc666f85c6694186d98248a157b9b052f8fdtree | snapshot (tar.gz zip)
parent0587d409ec53312f735d2004d5f47f8effee1ea9commit | diff
s390/pgtable: fix mprotect for single-threaded KVM guests

For a single-threaded KVM guest ptep_modify_prot_start will not use
IPTE, the invalid bit will therefore not be set. If DEBUG_VM is set
pgste_set_key called by ptep_modify_prot_commit will complain about
the missing invalid bit. ptep_modify_prot_start should set the
invalid bit in all cases.

Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/include/asm/pgtable.h diff | blob | blame | history