Re: [PATCH v1 0/5] s390x/mmu: Implement more facilities

[Cornelia Huck <cohuck@redhat.com>]

On Fri, 4 Oct 2019 15:23:32 +0200
David Hildenbrand <david@redhat.com> wrote:

> On 26.09.19 12:16, David Hildenbrand wrote:
> > This is the follow up of:
> >     [PATCH-for-4.2 v1 0/9] s390x: MMU changes and extensions
> > Without the general MMU rework. It's based on:
> >     [PATCH v2 0/7] s390x/mmu: DAT translation rewrite
> > 
> > This series adds adds EDAT2 MMU support, and implements/indicates related
> > facilities (ESOP-1, ESOP-2, IEP, ...) for TCG. The QEMU CPU model is
> > updated.
> > 
> > IEP under QEMU TCG seems to work just fine, when eabling it via the "max"
> > CPU model - via kvm unit tests:
> >     t460s: ~/git/kvm-unit-tests master $ ./s390x-run s390x/iep.elf -cpu max
> >     [...]
> >     PASS: iep: iep protection: Program interrupt: expected(4) == received(4)
> >     SUMMARY: 1 tests
> > 
> >     EXIT: STATUS=1
> > 
> > Changes since "[PATCH-for-4.2 v1 0/9] s390x: MMU changes and extensions":
> > - "s390x/mmu: Add EDAT2 translation support"
> > -- Fix vaddr offset within 2GB page
> > - "s390x/mmu: Implement ESOP-2 and ..."
> > -- Squashed two patches as requested.
> > -- Also set ilen to "2" in case of MMU_INST_FETCH on mmu_translate_real
> > - "s390x/mmu: Implement Instruction-Execution-Protection Facility"
> > -- Make sure s390_cpu_get_phys_page_debug() doesn't choke on IEP
> > - "s390x/cpumodel: Add new TCG features to QEMU cpu model"
> > -- Add comment "features introduced after the z13"
> > 
> > Cc: Ilya Leoshkevich <iii@linux.ibm.com>
> > 
> > David Hildenbrand (5):
> >   s390x/mmu: Add EDAT2 translation support
> >   s390x/mmu: Implement ESOP-2 and
> >     access-exception-fetch/store-indication facility
> >   s390x/mmu: Implement Instruction-Execution-Protection Facility
> >   s390x/cpumodel: Prepare for changes of QEMU model
> >   s390x/cpumodel: Add new TCG features to QEMU cpu model
> > 
> >  hw/s390x/s390-virtio-ccw.c  |  2 ++
> >  target/s390x/cpu.h          |  1 +
> >  target/s390x/gen-features.c | 11 +++++++++-
> >  target/s390x/helper.c       |  6 +++++-
> >  target/s390x/mmu_helper.c   | 42 +++++++++++++++++++++++++++++++++++--
> >  5 files changed, 58 insertions(+), 4 deletions(-)
> >   
> 
> @Christian (@Conny) if I can get an ACK on the last patch, I can send
> this directly upstream.
> 

No objections from my side, I won't get around to reviewing it in
detail anyway.