Commit b6cf8788 authored by Christian Borntraeger's avatar Christian Borntraeger Committed by Heiko Carstens
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[S390] kvm: extension capability for new address space layout


 ([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: default avatarChristian Borntraeger <>
Acked-by: default avatarAvi Kivity <>
Cc: Alexander Graf <>
Signed-off-by: default avatarHeiko Carstens <>
parent 480e5926
...@@ -123,6 +123,7 @@ int kvm_dev_ioctl_check_extension(long ext) ...@@ -123,6 +123,7 @@ int kvm_dev_ioctl_check_extension(long ext)
switch (ext) { switch (ext) {
case KVM_CAP_S390_PSW: case KVM_CAP_S390_PSW:
case KVM_CAP_S390_GMAP:
r = 1; r = 1;
break; break;
default: default:
...@@ -553,6 +553,7 @@ struct kvm_ppc_pvinfo { ...@@ -553,6 +553,7 @@ struct kvm_ppc_pvinfo {
#define KVM_CAP_SPAPR_TCE 63 #define KVM_CAP_SPAPR_TCE 63
#define KVM_CAP_PPC_SMT 64 #define KVM_CAP_PPC_SMT 64
#define KVM_CAP_PPC_RMA 65 #define KVM_CAP_PPC_RMA 65
#define KVM_CAP_S390_GMAP 71
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