debian/patches/old/cpuid-fix.diff

   1 see http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commitdiff;h=8fa3b3ce6e#patch1
   2
   3 KVM_GET_SUPPORTED_CPUID has been known to fail to return -E2BIG
   4 when it runs out of entries. Detect this by always trying again
   5 with a bigger table if the ioctl() fills the table.
   6
   7 --- a/kvm/libkvm/libkvm-x86.c
   8 +++ b/kvm/libkvm/libkvm-x86.c
   9 @@ -575,6 +575,8 @@ static struct kvm_cpuid2 *try_get_cpuid(kvm_context_t kvm, int max)
  10         r = ioctl(kvm->fd, KVM_GET_SUPPORTED_CPUID, cpuid);
  11         if (r == -1)
  12                 r = -errno;
  13 +       else if (r == 0 && cpuid->nent >= max)
  14 +               r = -E2BIG;
  15         if (r < 0) {
  16                 if (r == -E2BIG) {
  17                         free(cpuid);
  18