Add an option to automatically discover the host's NUMA and CPU counts
and use those values for a non cross-build.
Give users the option to override the per-arch default values or values
from cross files by specifying them on the command line with -Dmax_lcores
and -Dmax_numa_nodes.
Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: David Christensen <drc@linux.vnet.ibm.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
GCC 6.3.0 has a known bug which related to _mm512_extracti64x4_epi64.
Please reference https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82887
Some DPDK PMD AVX512 version heavily use _mm512_extracti64x4_epi6,
which cause building failure with debug buildtype.
Therefore, it's helpful to check if compiler work with
_mm512_extracti64x4_epi6.
This patch check the compiler compile result against the test code
snippet. If the checking is failed then disable AVX512.
Bugzilla ID: 717
Fixes: e6a6a13891 ("net/i40e: add AVX512 vector path")
Fixes: 808a17b3c1 ("net/ice: add Rx AVX512 offload path")
Fixes: 4b64ccb328 ("net/iavf: fix VLAN extraction in AVX512 path")
Cc: stable@dpdk.org
Reported-by: Liang Ma <liangma@liangbit.com>
Signed-off-by: Liang Ma <liangma@bytedance.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Running "./devtools/check-meson.py --fix" on the DPDK repo fixes a
number of issues with whitespace and formatting of files:
* indentation of lists
* missing trailing commas on final list element
* multiple list entries per line when list is not all single-line
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Switch from using tabs to 4 spaces for meson.build indentation, for the
basic infrastructure and tooling files, as well as doc and kernel
directories.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Disable AVX512 when on MinGW cross build, as .seh_savexmm
build error reports if AVX512 is enabled:
Error: invalid register for .seh_savexmm
Signed-off-by: Leyi Rong <leyi.rong@intel.com>
Tested-by: Pallavi Kadam <pallavi.kadam@intel.com>
Tested-by: David Marchand <david.marchand@redhat.com>
Add necessary changes to support new AVX512 specific ACL classify
algorithm:
- changes in meson.build to check that build tools
(compiler, assembler, etc.) do properly support AVX512.
- run-time checks to make sure target platform does support AVX512.
- dummy rte_acl_classify_avx512() for targets where AVX512
implementation couldn't be properly supported.
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
This patch enables the optimized calculation of CRC32-Ethernet and
CRC16-CCITT using the AVX512 and VPCLMULQDQ instruction sets. This CRC
implementation is built if the compiler supports the required instruction
sets. It is selected at run-time if the host CPU, again, supports the
required instruction sets.
Signed-off-by: Mairtin o Loingsigh <mairtin.oloingsigh@intel.com>
Signed-off-by: David Coyle <david.coyle@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Reviewed-by: Jasvinder Singh <jasvinder.singh@intel.com>
Reviewed-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Replace use of RTE_MACHINE_CPUFLAG macros with regular compiler
macros, which are more complete than those provided by DPDK, and as such
it allows new instruction sets to be leveraged without having to do
extra work to set them up in DPDK.
Signed-off-by: Sean Morrissey <sean.morrissey@intel.com>
Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
Acked-by: David Marchand <david.marchand@redhat.com>
Rather than checking the binutils version number, which can lead to
unnecessary disabling of AVX512 if fixes have been backported to distro
versions, we can instead check the output of "as" from binutils to see if
it is correct.
The check in the script uses the minimal assembly reproduction code posted
to the public bug tracker for gcc/binutils for those issues [1]. If the
binutils bug is present, the instruction parameters - specifically the
displacement parameter - will be different in the disassembled output
compared to the input. Therefore the check involves assembling a single
instruction and disassembling it again, checking that the two match.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Harry van Haaren <harry.van.haaren@intel.com>
The Meson cross file is renamed from meson_mingw.txt to cross-mingw,
and is added to test-meson-builds.sh.
The only example supported on Windows so far is "helloworld",
that's why the default list of examples is overridden.
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Add Meson configuration to cross-compile for Windows using MinGW-w64.
It may require adjustments in some cases, but at least it provides
the foundation.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Tested-by: William Tu <u9012063@gmail.com>
Tested-by: Pallavi Kadam <pallavi.kadam@intel.com>
If the compiler does not recognise the specific CPU when building with the
default "native" machine type, sse4.2 instructions can be missing, causing
a build error. Rather than advising the user to change the machine type,
we can just turn on SSE4.2 directly. This can prevent issues with running
automated tests with older compilers/distros on newer hardware.
Cc: stable@dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: David Marchand <david.marchand@redhat.com>
The meson build never checked for the presence of rdrand and rdseed
instructions, while make build never checked for rdseed. Ensure builds
always have the appropriate checks - and therefore defines - for these
instructions. For runtime, we also add in rdseed to the list of known
bits returned from cpuid() instruction, so we can confirm its presence at
application init time.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
Rather than checking flag by flag individually, use a loop to make it
easier to check new flags.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Just syntax change to reduce indentation, no functional change.
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
On Skylake platform, with native build, KNI kernel module crashes
because of the corrupted values passed to kernel module.
The corruption occurs because the userspace kni library works
unexpectedly. Compiler [1] is using AVX512 instructions and generated
binary is wrong [2].
It turned around gcc does its job correct, but gas is generating binary
wrong. And expected binutils 2.30, 2.31 & 2.31.1 are affected. Issue has
been fixed in binutils 2.32 with:
Commit x86: don't mistakenly scale non-8-bit displacements
AVX512 was already disabled with bintuils 2.30 [3], extending it to
2.31 & 2.31.1 too.
[1] gcc (GCC) 8.3.1 20190223 (Red Hat 8.3.1-2)
[2] gcc bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
[3] Bugzilla ID 97 has the details.
Bugzilla ID: 249
Cc: stable@dpdk.org
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
The '-mno-avx512f' compiler flag is not passed to the compiler,
detection of the binutils and setting flags works fine, but the flag
itself not used by compiler.
Removing the interim 'march_opt' variable and using directly
'machine_args' and setting '-mno-avx512f' to 'machine_args'
Fixes: 566b4d7a96 ("build: fix meson check for binutils 2.30")
Cc: stable@dpdk.org
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Define variables for "is_linux", "is_freebsd" and "is_windows"
to make the code shorter for comparisons and more readable.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
Acked-by: Luca Boccassi <bluca@debian.org>
Added initial stub source files and required meson changes
for Windows support.
kernel/windows/meson is a stub file added to support
Windows specific source in future releases.
Signed-off-by: Pallavi Kadam <pallavi.kadam@intel.com>
Signed-off-by: Anand Rawat <anand.rawat@intel.com>
Reviewed-by: Jeff Shaw <jeffrey.b.shaw@intel.com>
Reviewed-by: Ranjit Menon <ranjit.menon@intel.com>
Acked-by: Harini Ramakrishnan <harini.ramakrishnan@microsoft.com>
Rather than relying on the target machine architecture, use the
size of a pointer from the compiler to determine if we are 64-bits
or not. This allows correct behaviour when you pass -m32 as a compile
option. It also allows us to use this value repeatedly throughout the
repo rather than continually testing for the sizeof(void*).
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Luca Boccassi <bluca@debian.org>
Acked-by: Luca Boccassi <bluca@debian.org>
This commit reworks the checks for binutils 2.30 and how
the flags to disable AVX512F are passed to the compiler.
Previously the #define for including AVX512 code was set,
while the -mno-avx512f argument was given to the compiler.
This would cause gcc to correctly refuse to emit AVX512
instructions, but the rte_memcpy code that includes AVX512
optimizations was being added to the build.
The check for binutils check is now moved to x86 as it is
irrelevant for other architectures, and the -mno-avx512f
flag is passed to a march_opts array in meson. As the
-mno-avx512 flag is added earlier in the build, the code
in rte_memcpy is no longer attempted to be compiled.
This commit also adds a message print in the meson configure
stage to alert the user of the workaround being employed.
Fixes: a32ca9a4eb ("mk: fix scope of disabling AVX512F support")
Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Tested-by: Ferruh Yigit <ferruh.yigit@intel.com>
Previous code only added in AVX, and a few other non-SSE flags to the
compile-time cpuflags because all SSE instruction set levels are now
required for an x86 build. However, some apps may still be checking for the
existing SSE ones in the legacy build system, so add them here for
completeness and compatibility.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Luca Boccassi <bluca@debian.org>
To build with meson and ninja, we need some initial infrastructure in
place. The build files for meson always need to be called "meson.build",
and options get placed in meson_options.txt
This commit adds a top-level meson.build file, which sets up the global
variables for tracking drivers, libraries, etc., and then includes other
build files, before finishing by writing the global build configuration
header file and a DPDK pkgconfig file at the end, using some of those same
globals.
From the top level build file, the only include file thus far is for the
config folder, which does some other setup of global configuration
parameters, including pulling in architecture specific parameters from an
architectural subdirectory. A number of configuration build options are
provided for the project to tune a number of global variables which will be
used later e.g. max numa nodes, max cores, etc. These settings all make
their way to the global build config header "rte_build_config.h". There is
also a file "rte_config.h", which includes "rte_build_config.h", and this
file is meant to hold other build-time values which are present in our
current static build configuration but are not normally meant for
user-configuration. Ideally, over time, the values placed here should be
moved to the individual libraries or drivers which want those values.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Reviewed-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>
Acked-by: Luca Boccassi <luca.boccassi@gmail.com>
