Fix race when making a page secure (hold pte lock again) This should fix the issues I have seen, which I think/hope are also the same issues that David found. v4->v5: * fixed kerneldoc for s390_wiggle_split_folio() * remove get_locked_valid_pte() and replace it with folio_walk_start() [thanks David] v3->v4: * move and rename s390_wiggle_split_folio() to fix a compile issue when KVM is not selected * removed obsolete reference to __() from comments v2->v3: * added check for pte_write() in make_hva_secure() [thanks David] v1->v2: * major refactoring * walk the page tables only once * when importing, manually fault in pages if needed Claudio Imbrenda (1): KVM: s390: pv: fix race when making a page secure arch/s390/include/asm/gmap.h | 1 - arch/s390/include/asm/uv.h | 2 +- arch/s390/kernel/uv.c | 136 +++++++++++++++++++++++++++++++++-- arch/s390/kvm/gmap.c | 103 ++------------------------ arch/s390/kvm/kvm-s390.c | 25 ++++--- arch/s390/mm/gmap.c | 28 -------- 6 files changed, 151 insertions(+), 144 deletions(-) -- 2.48.1
