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| author | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2022-06-28 15:56:10 +0200 |
|---|---|---|
| committer | Janosch Frank <frankja@linux.ibm.com> | 2022-07-19 14:05:57 +0200 |
| commit | ca2fd0609b5ddd15fe57c917a41508a7a9fc17e1 (patch) | |
| tree | 9dd07a7d5886f6a00ded48d6653477ee0aad59a5 /arch/s390/kvm/Kconfig | |
| parent | KVM: s390: pv: Add kvm_s390_cpus_from_pv to kvm-s390.h and add documentation (diff) | |
| download | linux-ca2fd0609b5ddd15fe57c917a41508a7a9fc17e1.tar.xz linux-ca2fd0609b5ddd15fe57c917a41508a7a9fc17e1.zip | |
KVM: s390: pv: add mmu_notifier
Add an mmu_notifier for protected VMs. The callback function is
triggered when the mm is torn down, and will attempt to convert all
protected vCPUs to non-protected. This allows the mm teardown to use
the destroy page UVC instead of export.
Also make KVM select CONFIG_MMU_NOTIFIER, needed to use mmu_notifiers.
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Nico Boehr <nrb@linux.ibm.com>
Link: https://lore.kernel.org/r/20220628135619.32410-10-imbrenda@linux.ibm.com
Message-Id: <20220628135619.32410-10-imbrenda@linux.ibm.com>
[frankja@linux.ibm.com: Conflict resolution for mmu_notifier.h include
and struct kvm_s390_pv]
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Diffstat (limited to 'arch/s390/kvm/Kconfig')
| -rw-r--r-- | arch/s390/kvm/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig index 2e84d3922f7c..33f4ff909476 100644 --- a/arch/s390/kvm/Kconfig +++ b/arch/s390/kvm/Kconfig @@ -34,6 +34,7 @@ config KVM select SRCU select KVM_VFIO select INTERVAL_TREE + select MMU_NOTIFIER help Support hosting paravirtualized guest machines using the SIE virtualization capability on the mainframe. This should work |