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| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-05-30 14:51:40 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-05-30 14:51:40 +0200 |
| commit | 53ea2e462e1b5b898d244bb113993df709107e32 (patch) | |
| tree | 6ed864c3915eb9f2595e9103926bb94c3e92e1c8 /Documentation/virtual/kvm/ppc-pv.txt | |
| parent | MIPS: KVM: Remove redundant semicolon (diff) | |
| parent | KVM: PPC: Book3S PR: Rework SLB switching code (diff) | |
| download | linux-53ea2e462e1b5b898d244bb113993df709107e32.tar.xz linux-53ea2e462e1b5b898d244bb113993df709107e32.zip | |
Merge tag 'signed-kvm-ppc-next' of git://github.com/agraf/linux-2.6 into kvm-next
Patch queue for ppc - 2014-05-30
In this round we have a few nice gems. PR KVM gains initial POWER8 support
as well as LE host awareness, ihe e500 targets can now properly run u-boot,
LE guests now work with PR KVM including KVM hypercalls and HV KVM guests
can now use huge pages.
On top of this there are some bug fixes.
Conflicts:
include/uapi/linux/kvm.h
Diffstat (limited to 'Documentation/virtual/kvm/ppc-pv.txt')
| -rw-r--r-- | Documentation/virtual/kvm/ppc-pv.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/ppc-pv.txt b/Documentation/virtual/kvm/ppc-pv.txt index 4643cde517c4..319560646f32 100644 --- a/Documentation/virtual/kvm/ppc-pv.txt +++ b/Documentation/virtual/kvm/ppc-pv.txt @@ -94,10 +94,24 @@ a bitmap of available features inside the magic page. The following enhancements to the magic page are currently available: KVM_MAGIC_FEAT_SR Maps SR registers r/w in the magic page + KVM_MAGIC_FEAT_MAS0_TO_SPRG7 Maps MASn, ESR, PIR and high SPRGs For enhanced features in the magic page, please check for the existence of the feature before using them! +Magic page flags +================ + +In addition to features that indicate whether a host is capable of a particular +feature we also have a channel for a guest to tell the guest whether it's capable +of something. This is what we call "flags". + +Flags are passed to the host in the low 12 bits of the Effective Address. + +The following flags are currently available for a guest to expose: + + MAGIC_PAGE_FLAG_NOT_MAPPED_NX Guest handles NX bits correclty wrt magic page + MSR bits ======== |