On 3/8/21 4:19 PM, Christian Borntraeger wrote: > On 02.03.21 18:44, Claudio Imbrenda wrote: >> The current handling of the MVPG instruction when executed in a nested >> guest is wrong, and can lead to the nested guest hanging. >> >> This patchset fixes the behaviour to be more architecturally correct, >> and fixes the hangs observed. >> >> v4->v5 >> * split kvm_s390_logical_to_effective so it can be reused for vSIE >> * fix existing comments and add some more comments >> * use the new split _kvm_s390_logical_to_effective in vsie_handle_mvpg >> >> v3->v4 >> * added PEI_ prefix to DAT_PROT and NOT_PTE macros >> * added small comment to explain what they are about >> >> v2->v3 >> * improved some comments >> * improved some variable and parameter names for increased readability >> * fixed missing handling of page faults in the MVPG handler >> * small readability improvements >> >> v1->v2 >> * complete rewrite > > > queued (with small fixups) for kvms390. Still not sure if this will land in master or next. > Opinions? I'd go for the next merge window >> >> Claudio Imbrenda (3): >> s390/kvm: split kvm_s390_logical_to_effective >> s390/kvm: extend kvm_s390_shadow_fault to return entry pointer >> s390/kvm: VSIE: correctly handle MVPG when in VSIE >> >> arch/s390/kvm/gaccess.c | 30 ++++++++++-- >> arch/s390/kvm/gaccess.h | 35 ++++++++++--- >> arch/s390/kvm/vsie.c | 106 ++++++++++++++++++++++++++++++++++++---- >> 3 files changed, 151 insertions(+), 20 deletions(-) >>
