If the amount of entries available passed to KVM_GET_SUPPORTED_CPUID is too big we don't fail, we just adjust it to the amount actually needed and fill the entries. Cc: Avi Kivity <avi@xxxxxxxxxx> Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx> Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx> --- Documentation/virtual/kvm/api.txt | 7 +++---- 1 files changed, 3 insertions(+), 4 deletions(-) diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 7945b0b..273be09 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -1074,10 +1074,9 @@ or for feature consistency across a cluster). Userspace invokes KVM_GET_SUPPORTED_CPUID by passing a kvm_cpuid2 structure with the 'nent' field indicating the number of entries in the variable-size array 'entries'. If the number of entries is too low to describe the cpu -capabilities, an error (E2BIG) is returned. If the number is too high, -the 'nent' field is adjusted and an error (ENOMEM) is returned. If the -number is just right, the 'nent' field is adjusted to the number of valid -entries in the 'entries' array, which is then filled. +capabilities, an error (E2BIG) is returned. If the number is above or just, +right, the 'nent' field is adjusted to the number of valid entries in the +'entries' array, which is then filled. The entries returned are the host cpuid as returned by the cpuid instruction, with unknown or unsupported features masked out. Some features (for example, -- 1.7.8.rc1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
