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KVM: clarify the idea of kvm_dirty_regs

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This patch clarifies that kvm_dirty_regs are just a hint to the kernel and
that the kernel might just ignore some flags and sync the values (like done for
acrs and gprs now).

Signed-off-by: David Hildenbrand <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Christian Borntraeger <[email protected]>
This commit is contained in:
David Hildenbrand 2014-07-29 08:19:26 +02:00 • committed by Christian Borntraeger
commit d8482c0d87
1 changed files with 4 additions and 0 deletions
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4
Documentation/virtual/kvm/api.txt
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@ -2861,6 +2861,10 @@ kvm_valid_regs for specific bits. These bits are architecture specific
and usually define the validity of a groups of registers. (e.g. one bit
for general purpose registers)
Please note that the kernel is allowed to use the kvm_run structure as the
primary storage for certain register types. Therefore, the kernel may use the
values in kvm_run even if the corresponding bit in kvm_dirty_regs is not set.
};