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vppinfra: Multiarch support for AMD EPYC processors

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Type: feature

- Added multiarch support for AMD Zen architectures

Change-Id: I65d3fe94b6cc622ebecbe1ac803efa674e87c87a
Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
This commit is contained in:
Sivaprasad Tummala
2023-04-17 05:05:15 -07:00
committed by Damjan Marion
parent b1c5c3fc34
commit 206592bb73
2 changed files with 31 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
src/cmake/cpu.cmake
View File

@ -136,6 +136,11 @@ elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
OFF
)
add_vpp_march_variant(znver3
FLAGS -march=znver3 -mtune=znver3 -mprefer-vector-width=256
OFF
)
if (GNU_ASSEMBLER_AVX512_BUG)
message(WARNING "AVX-512 multiarch variant(s) disabled due to GNU Assembler bug")
else()
@ -151,6 +156,11 @@ elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*")
FLAGS -march=sapphirerapids -mtune=sapphirerapids -mprefer-vector-width=512
OFF
)
add_vpp_march_variant(znver4
FLAGS -march=znver4 -mtune=znver4 -mprefer-vector-width=512
OFF
)
endif()
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
set(VPP_DEFAULT_MARCH_FLAGS -march=armv8-a+crc)

23
src/vppinfra/cpu.h
View File

@ -27,7 +27,9 @@
_ (skx, "Intel Skylake (server) / Cascade Lake") \
_ (icl, "Intel Ice Lake") \
_ (adl, "Intel Alder Lake") \
_ (spr, "Intel Sapphire Rapids")
_ (spr, "Intel Sapphire Rapids") \
_ (znver3, "AMD Milan") \
_ (znver4, "AMD Genoa")
#elif defined(__aarch64__)
#define foreach_march_variant \
_ (octeontx2, "Marvell Octeon TX2") \
@ -147,7 +149,8 @@ _CLIB_MARCH_FN_REGISTRATION(fn)
_ (movdir64b, 7, ecx, 28) \
_ (enqcmd, 7, ecx, 29) \
_ (avx512_fp16, 7, edx, 23) \
_ (invariant_tsc, 0x80000007, edx, 8)
_ (invariant_tsc, 0x80000007, edx, 8) \
_ (monitorx, 0x80000001, ecx, 29)
#define foreach_aarch64_flags \
_ (fp, 0) \
@ -300,6 +303,22 @@ clib_cpu_march_priority_hsw ()
return -1;
}
static inline int
clib_cpu_march_priority_znver4 ()
{
if (clib_cpu_supports_avx512_bitalg () && clib_cpu_supports_monitorx ())
return 250;
return -1;
}
static inline int
clib_cpu_march_priority_znver3 ()
{
if (clib_cpu_supports_avx2 () && clib_cpu_supports_monitorx ())
return 70;
return -1;
}
#define X86_CPU_ARCH_PERF_FUNC 0xA
static inline int