eal/x86: cache queried CPU flags

Rather than re-querying the HW each time a CPU flag is requested, we can
just save the return value in the flags array. This should speed up
repeated querying of CPU

eal/x86: cache queried CPU flags

Rather than re-querying the HW each time a CPU flag is requested, we can
just save the return value in the flags array. This should speed up
repeated querying of CPU flags, and provides a workaround for a reported
issue where errors are seen with constant querying of the AVX-512 CPU
flag from a non-AVX VM.

Bugzilla ID: 1501

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@huawei.com>

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eal/x86: add some AMD power management cpuflag

Add a new CPUID flag to indicate support for monitorx instruction
on AMD EPYC processors.

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.co

eal/x86: add some AMD power management cpuflag

Add a new CPUID flag to indicate support for monitorx instruction
on AMD EPYC processors.

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>

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eal: remove number of cpuflags from API

The RTE_CPUFLAG_NUMFLAGS enum value was mainly a canary for internal
use. Yet, it could be passed by an application to
rte_cpu_get_flag_enabled() / rte_cpu_ge

eal: remove number of cpuflags from API

The RTE_CPUFLAG_NUMFLAGS enum value was mainly a canary for internal
use. Yet, it could be passed by an application to
rte_cpu_get_flag_enabled() / rte_cpu_get_flag_name().
So, even though passing this value to those functions is debattable,
changing its meaning (by adding a new CPU feature for example) would
impact ABI compatibility.

This patch removes RTE_CPUFLAG_NUMFLAGS to avoid such future ABI
compatibility issue.

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
Signed-off-by: David Marchand <david.marchand@redhat.com>

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eal/x86: implement cpuflags for MSVC

The cpuid API is different with MSVC, use __cpuid and __cpuidex
intrinsics.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: Morten Brørup

eal/x86: implement cpuflags for MSVC

The cpuid API is different with MSVC, use __cpuid and __cpuidex
intrinsics.

Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>

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eal/x86: sort CPU extended features definitions

Sort the definitions for extended features (leaf 0) to enhance
readability.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce

eal/x86: sort CPU extended features definitions

Sort the definitions for extended features (leaf 0) to enhance
readability.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

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eal/x86: fix some CPU extended features definitions

Caught while checking CPUID related stuff in OVS.

According to [1], for Structured Extended Feature Flags Enumeration Leaf
(EAX = 0x07H, ECX = 0)

eal/x86: fix some CPU extended features definitions

Caught while checking CPUID related stuff in OVS.

According to [1], for Structured Extended Feature Flags Enumeration Leaf
(EAX = 0x07H, ECX = 0):

- BMI1 is associated to EBX, bit 3 (was incorrectly 2),
- SMEP is associated to EBX, bit 7 (was incorrectly 6),
- BMI2 is associated to EBX, bit 8 (was incorrectly 7),
- ERMS is associated to EBX, bit 9 (was incorrectly 8),

1: https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf

Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

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eal: add power monitor for multiple events

Use RTM and WAITPKG instructions to perform a wait-for-writes similar to
what UMWAIT does, but without the limitation of having to listen for
just one even

eal: add power monitor for multiple events

Use RTM and WAITPKG instructions to perform a wait-for-writes similar to
what UMWAIT does, but without the limitation of having to listen for
just one event. This works because the optimized power state used by the
TPAUSE instruction will cause a wake up on RTM transaction abort, so if
we add the addresses we're interested in to the read-set, any write to
those addresses will wake us up.

Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Tested-by: David Hunt <david.hunt@intel.com>

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lib: remove librte_ prefix from directory names

There is no reason for the DPDK libraries to all have 'librte_' prefix on
the directory names. This prefix makes the directory names longer and also
m

lib: remove librte_ prefix from directory names

There is no reason for the DPDK libraries to all have 'librte_' prefix on
the directory names. This prefix makes the directory names longer and also
makes it awkward to add features referring to individual libraries in the
build - should the lib names be specified with or without the prefix.
Therefore, we can just remove the library prefix and use the library's
unique name as the directory name, i.e. 'eal' rather than 'librte_eal'

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

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