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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2011-09-20 17:07:29 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2011-09-20 17:07:34 +0200 |
| commit | b6cf8788a3382c2000743a0e393bcc8aeb0601cb (patch) | |
| tree | 3af86a59e2884f66068019571ce725e81878b5cf | |
| parent | 480e5926ce3bb61ec229be2dab08bdce8abb8d2e (diff) | |
| download | linux-b6cf8788a3382c2000743a0e393bcc8aeb0601cb.tar.gz linux-b6cf8788a3382c2000743a0e393bcc8aeb0601cb.tar.bz2 linux-b6cf8788a3382c2000743a0e393bcc8aeb0601cb.zip | |
[S390] kvm: extension capability for new address space layout
598841ca9919d008b520114d8a4378c4ce4e40a1 ([S390] use gmap address
spaces for kvm guest images) changed kvm on s390 to use a separate
address space for kvm guests. We can now put KVM guests anywhere
in the user address mode with a size up to 8PB - as long as the
memory is 1MB-aligned. This change was done without KVM extension
capability bit.
The change was added after 3.0, but we still have a chance to add
a feature bit before 3.1 (keeping the releases in a sane state).
We use number 71 to avoid collisions with other pending kvm patches
as requested by Alexander Graf.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Avi Kivity <avi@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| -rw-r--r-- | arch/s390/kvm/kvm-s390.c | 1 | ||||
| -rw-r--r-- | include/linux/kvm.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index b4eced131e5c..dc2b580e27bc 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -123,6 +123,7 @@ int kvm_dev_ioctl_check_extension(long ext) switch (ext) { case KVM_CAP_S390_PSW: + case KVM_CAP_S390_GMAP: r = 1; break; default: diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 2c366b52f505..aace6b8691a2 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -553,6 +553,7 @@ struct kvm_ppc_pvinfo { #define KVM_CAP_SPAPR_TCE 63 #define KVM_CAP_PPC_SMT 64 #define KVM_CAP_PPC_RMA 65 +#define KVM_CAP_S390_GMAP 71 #ifdef KVM_CAP_IRQ_ROUTING |