diff options
| author | Avi Kivity <avi@redhat.com> | 2010-04-01 14:39:21 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-17 12:17:22 +0300 |
| commit | 647dc49eebad2c30f823cae2bd8204b66c739f9c (patch) | |
| tree | f968fd43cc73609d1bc401483e8f0785aa4ac400 /Documentation/kvm | |
| parent | 05b0ab1c0bb526ac1056bab356ee92cfd6daa6fd (diff) | |
KVM: Document replacements for KVM_EXIT_HYPERCALL
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'Documentation/kvm')
| -rw-r--r-- | Documentation/kvm/api.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/kvm/api.txt b/Documentation/kvm/api.txt index 6f362356e738..baa8fde8bd16 100644 --- a/Documentation/kvm/api.txt +++ b/Documentation/kvm/api.txt @@ -974,7 +974,9 @@ pending operations. __u32 pad; } hypercall; -Unused. +Unused. This was once used for 'hypercall to userspace'. To implement +such functionality, use KVM_EXIT_IO (x86) or KVM_EXIT_MMIO (all except s390). +Note KVM_EXIT_IO is significantly faster than KVM_EXIT_MMIO. /* KVM_EXIT_TPR_ACCESS */ struct { |