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| author |   Paolo Bonzini <pbonzini@redhat.com> | 2015-05-17 17:30:37 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-06-05 17:26:35 +0200 |
| commit | f481b069e674378758c73761827e83ab05c46b52 (patch) | |
| tree | 5f6ee0f8820e320f127fb7a23dd3ba28d5965302 /Documentation/virtual | |
| parent | KVM: add vcpu-specific functions to read/write/translate GFNs (diff) | |
| download | linux-dev-f481b069e674378758c73761827e83ab05c46b52.tar.xz linux-dev-f481b069e674378758c73761827e83ab05c46b52.zip | |
KVM: implement multiple address spaces
Only two ioctls have to be modified; the address space id is
placed in the higher 16 bits of their slot id argument.
As of this patch, no architecture defines more than one
address space; x86 will be the first.
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'Documentation/virtual')
| -rw-r--r-- | Documentation/virtual/kvm/api.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 2ddefd58b1aa..461956a0ee8e 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -254,6 +254,11 @@ since the last call to this ioctl. Bit 0 is the first page in the memory slot. Ensure the entire structure is cleared to avoid padding issues. +If KVM_CAP_MULTI_ADDRESS_SPACE is available, bits 16-31 specifies +the address space for which you want to return the dirty bitmap. +They must be less than the value that KVM_CHECK_EXTENSION returns for +the KVM_CAP_MULTI_ADDRESS_SPACE capability. + 4.9 KVM_SET_MEMORY_ALIAS @@ -924,6 +929,13 @@ slot. When changing an existing slot, it may be moved in the guest physical memory space, or its flags may be modified. It may not be resized. Slots may not overlap in guest physical address space. +If KVM_CAP_MULTI_ADDRESS_SPACE is available, bits 16-31 of "slot" +specifies the address space which is being modified. They must be +less than the value that KVM_CHECK_EXTENSION returns for the +KVM_CAP_MULTI_ADDRESS_SPACE capability. Slots in separate address spaces +are unrelated; the restriction on overlapping slots only applies within +each address space. + Memory for the region is taken starting at the address denoted by the field userspace_addr, which must point at user addressable memory for the entire memory slot size. Any object may back this memory, including |