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KVM: x86: document special identity map address value

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Setting it to 0 leads to setting it to the default value, let's document
this.

Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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David Hildenbrand 2017-08-24 20:51:35 +02:00 committed by Paolo Bonzini
parent d8a6e365b2
commit 726b99c4f7
1 changed files with 3 additions and 0 deletions
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Documentation/virtual/kvm/api.txt
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@ -1124,6 +1124,9 @@ guest physical address space and must not conflict with any memory slot
or any mmio address. The guest may malfunction if it accesses this memory
region.
Setting the address to 0 will result in resetting the address to its default
(0xfffbc000).
This ioctl is required on Intel-based hosts. This is needed on Intel hardware
because of a quirk in the virtualization implementation (see the internals
documentation when it pops into existence).