Update to 3.4-final.

[linux-flexiantxendom0-3.2.10.git] / lib / Kconfig

diff --git a/lib/Kconfig b/lib/Kconfig
index 63b5782..4a8aba2 100644 (file)
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -19,6 +19,20 @@ config RATIONAL
 config GENERIC_FIND_FIRST_BIT
        bool
 
+config NO_GENERIC_PCI_IOPORT_MAP
+       bool
+
+config GENERIC_PCI_IOMAP
+       bool
+
+config GENERIC_IOMAP
+       bool
+       select GENERIC_PCI_IOMAP
+
+config GENERIC_IO
+       boolean
+       default n
+
 config CRC_CCITT
        tristate "CRC-CCITT functions"
        help
@@ -51,14 +65,71 @@ config CRC_ITU_T
          functions require M here.
 
 config CRC32
-       tristate "CRC32 functions"
+       tristate "CRC32/CRC32c functions"
        default y
        select BITREVERSE
        help
          This option is provided for the case where no in-kernel-tree
-         modules require CRC32 functions, but a module built outside the
-         kernel tree does. Such modules that use library CRC32 functions
-         require M here.
+         modules require CRC32/CRC32c functions, but a module built outside
+         the kernel tree does. Such modules that use library CRC32/CRC32c
+         functions require M here.
+
+config CRC32_SELFTEST
+       bool "CRC32 perform self test on init"
+       default n
+       depends on CRC32
+       help
+         This option enables the CRC32 library functions to perform a
+         self test on initialization. The self test computes crc32_le
+         and crc32_be over byte strings with random alignment and length
+         and computes the total elapsed time and number of bytes processed.
+
+choice
+       prompt "CRC32 implementation"
+       depends on CRC32
+       default CRC32_SLICEBY8
+       help
+         This option allows a kernel builder to override the default choice
+         of CRC32 algorithm.  Choose the default ("slice by 8") unless you
+         know that you need one of the others.
+
+config CRC32_SLICEBY8
+       bool "Slice by 8 bytes"
+       help
+         Calculate checksum 8 bytes at a time with a clever slicing algorithm.
+         This is the fastest algorithm, but comes with a 8KiB lookup table.
+         Most modern processors have enough cache to hold this table without
+         thrashing the cache.
+
+         This is the default implementation choice.  Choose this one unless
+         you have a good reason not to.
+
+config CRC32_SLICEBY4
+       bool "Slice by 4 bytes"
+       help
+         Calculate checksum 4 bytes at a time with a clever slicing algorithm.
+         This is a bit slower than slice by 8, but has a smaller 4KiB lookup
+         table.
+
+         Only choose this option if you know what you are doing.
+
+config CRC32_SARWATE
+       bool "Sarwate's Algorithm (one byte at a time)"
+       help
+         Calculate checksum a byte at a time using Sarwate's algorithm.  This
+         is not particularly fast, but has a small 256 byte lookup table.
+
+         Only choose this option if you know what you are doing.
+
+config CRC32_BIT
+       bool "Classic Algorithm (one bit at a time)"
+       help
+         Calculate checksum one bit at a time.  This is VERY slow, but has
+         no lookup table.  This is provided as a debugging option.
+
+         Only choose this option if you are debugging crc32.
+
+endchoice
 
 config CRC7
        tristate "CRC7 functions"
@@ -214,6 +285,7 @@ config BTREE
 config HAS_IOMEM
        boolean
        depends on !NO_IOMEM
+       select GENERIC_IO
        default y
 
 config HAS_IOPORT
@@ -272,11 +344,38 @@ config AVERAGE
 
          If unsure, say N.
 
+config CLZ_TAB
+       bool
+
 config CORDIC
-       tristate "Cordic function"
+       tristate "CORDIC algorithm"
+       help
+         This option provides an implementation of the CORDIC algorithm;
+         calculations are in fixed point. Module will be called cordic.
+
+config MPILIB
+       tristate
+       select CLZ_TAB
+       help
+         Multiprecision maths library from GnuPG.
+         It is used to implement RSA digital signature verification,
+         which is used by IMA/EVM digital signature extension.
+
+config MPILIB_EXTRA
+       bool
+       depends on MPILIB
+       help
+         Additional sources of multiprecision maths library from GnuPG.
+         This code is unnecessary for RSA digital signature verification,
+         but can be compiled if needed.
+
+config SIGNATURE
+       tristate
+       depends on KEYS && CRYPTO
+       select CRYPTO_SHA1
+       select MPILIB
        help
-         The option provides arithmetic function using cordic algorithm
-         so its calculations are in fixed point. Modules can select this
-         when they require this function. Module will be called cordic.
+         Digital signature verification. Currently only RSA is supported.
+         Implementation is done using GnuPG MPI library
 
 endmenu