We normally do not need to bother with ifdefs around
specific system-calls. userfaultfd turns out to be
different because our unistd import into linux-headers
is incomplete: it's missing asm-generic bits,
some arm and mips headers.

Fix it up, and drop ifdefs for usefaultfd.

Tested on x86 only.

Pls consider merging this through the migration tree.

Michael S. Tsirkin (3):
  update-linux-headers.sh: add unistd.h
  linux-headers: add asm-generic/unistd.h
  postcopy: drop unnecessary conditions

 linux-headers/asm-arm/bitsperlong.h     |   1 +
 linux-headers/asm-arm64/bitsperlong.h   |  24 +
 linux-headers/asm-generic/bitsperlong.h |  16 +
 linux-headers/asm-generic/unistd.h      | 944 ++++++++++++++++++++++++++++++++
 linux-headers/asm-mips/bitsperlong.h    |   9 +
 linux-headers/asm-mips/unistd.h         |  44 +-
 linux-headers/asm-powerpc/bitsperlong.h |  13 +
 linux-headers/asm-s390/bitsperlong.h    |  14 +
 linux-headers/asm-x86/bitsperlong.h     |  14 +
 migration/postcopy-ram.c                |   4 +-
 tests/migration-test.c                  |   2 +-
 scripts/update-linux-headers.sh         |  17 +-
 12 files changed, 1085 insertions(+), 17 deletions(-)
 create mode 100644 linux-headers/asm-arm/bitsperlong.h
 create mode 100644 linux-headers/asm-arm64/bitsperlong.h
 create mode 100644 linux-headers/asm-generic/bitsperlong.h
 create mode 100644 linux-headers/asm-generic/unistd.h
 create mode 100644 linux-headers/asm-mips/bitsperlong.h
 create mode 100644 linux-headers/asm-powerpc/bitsperlong.h
 create mode 100644 linux-headers/asm-s390/bitsperlong.h
 create mode 100644 linux-headers/asm-x86/bitsperlong.h

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MST