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authorScott Wood <scottwood@freescale.com>2012-01-11 08:37:35 -0500
committerAvi Kivity <avi@redhat.com>2012-03-05 07:52:41 -0500
commit54f65795c8f6e192540756085d738e66ab0917a0 (patch)
tree3efd1dd71cbc7cf8861bdfb3aa1dc89c62a40c16 /Documentation/virtual
parentb3c5d3c2a49602c370de6d02fdb923bc48cd1abc (diff)
KVM: PPC: refer to paravirt docs in header file
Instead of keeping separate copies of struct kvm_vcpu_arch_shared (one in the code, one in the docs) that inevitably fail to be kept in sync (already sr[] is missing from the doc version), just point to the header file as the source of documentation on the contents of the magic page. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: Avi Kivity <avi@redhat.com> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'Documentation/virtual')
-rw-r--r--Documentation/virtual/kvm/ppc-pv.txt24
1 files changed, 2 insertions, 22 deletions
diff --git a/Documentation/virtual/kvm/ppc-pv.txt b/Documentation/virtual/kvm/ppc-pv.txt
index 2b7ce190cde..6e7c3705093 100644
--- a/Documentation/virtual/kvm/ppc-pv.txt
+++ b/Documentation/virtual/kvm/ppc-pv.txt
@@ -81,28 +81,8 @@ additional registers to the magic page. If you add fields to the magic page,
81also define a new hypercall feature to indicate that the host can give you more 81also define a new hypercall feature to indicate that the host can give you more
82registers. Only if the host supports the additional features, make use of them. 82registers. Only if the host supports the additional features, make use of them.
83 83
84The magic page has the following layout as described in 84The magic page layout is described by struct kvm_vcpu_arch_shared
85arch/powerpc/include/asm/kvm_para.h: 85in arch/powerpc/include/asm/kvm_para.h.
86
87struct kvm_vcpu_arch_shared {
88 __u64 scratch1;
89 __u64 scratch2;
90 __u64 scratch3;
91 __u64 critical; /* Guest may not get interrupts if == r1 */
92 __u64 sprg0;
93 __u64 sprg1;
94 __u64 sprg2;
95 __u64 sprg3;
96 __u64 srr0;
97 __u64 srr1;
98 __u64 dar;
99 __u64 msr;
100 __u32 dsisr;
101 __u32 int_pending; /* Tells the guest if we have an interrupt */
102};
103
104Additions to the page must only occur at the end. Struct fields are always 32
105or 64 bit aligned, depending on them being 32 or 64 bit wide respectively.
106 86
107Magic page features 87Magic page features
108=================== 88===================