Marcelo, Gleb, (Paolo,)
here is the 2nd spin of the s390 patches.
The following changes since commit 7cbb39d4d4d530dff12f2ff06ed6c85c504ba91a:
Merge tag 'kvm-3.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm (2014-04-02 14:50:10 -0700)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git tags/kvm-s390-20140409
for you to fetch changes up to e31a06aaa22f66ba868148ae4f8e270d2ebb9c2b:
KVM: s390: Add proper dirty bitmap support to S390 kvm. (2014-04-09 21:22:06 +0200)
----------------------------------------------------------------
here are two changes for KVM on s390:
- newer Linux version don't use the storage keys for dirty and
reference tracking. We can optimize the guest handling for
those guests for faults as well as page-in and page-out by
simply not caring about the guest visible storage key. We trap
guest storage key instruction to enable those keys only on demand.
- Migration bitmap: Until now s390 never provided a proper dirty
bitmap. Let's provide a proper migration bitmap for s390. We also
change the user dirty tracking to a fault based mechanism. This
makes the host completely independent from the storage keys. Long
term this will allow us to back guest memory with large pages.
Please note:
The first patch commit 96959051904c2e07a102ee13887166e93d349f05
(KVM: s390: also set guest pages back to stable on kexec/kdump)
is only included to avoid a compile error in the calls to
page_table_reset_pgste. This commit already made its way into Linus
git as commit id 1b6a19b34d54d3d56b9042 and we need to adopt
the new call as well.
The merge conflict between Linus tree and kvm tree is easy to solve.
(kvm tree has the final result)
All patches that touch s390 memory management are either ACKed or
written by the s390 maintainers.
----------------------------------------------------------------
Christian Borntraeger (1):
kvm/s390: also set guest pages back to stable on kexec/kdump
Dominik Dingel (5):
KVM: s390: Adding skey bit to mmu context
KVM: s390: Clear storage keys
KVM: s390: Allow skeys to be enabled for the current process
KVM: s390: Don't enable skeys by default
s390/mm, kvm: new gmap_test_and_clear_dirty function
Jason J. Herne (1):
KVM: s390: Add proper dirty bitmap support to S390 kvm.
Martin Schwidefsky (1):
s390/mm,kvm: use software dirty bit detection for user dirty tracking
arch/s390/include/asm/kvm_host.h | 3 +
arch/s390/include/asm/mmu.h | 2 +
arch/s390/include/asm/mmu_context.h | 1 +
arch/s390/include/asm/pgalloc.h | 3 +-
arch/s390/include/asm/pgtable.h | 169 +++++++++++++++++-------------------
arch/s390/kvm/diag.c | 8 +-
arch/s390/kvm/kvm-s390.c | 52 ++++++++++-
arch/s390/kvm/priv.c | 14 +++
arch/s390/kvm/trace.h | 14 +++
arch/s390/mm/pgtable.c | 93 +++++++++++++++++---
virt/kvm/kvm_main.c | 2 -
11 files changed, 253 insertions(+), 108 deletions(-)
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