On Mon, 8 Mar 2021 16:26:58 +0100 Janosch Frank <frankja@xxxxxxxxxxxxx> wrote: > 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 I agree > >> > >> 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(-) >
