debian/patches/nicvf-0007-net-thunderx-disable-PMD-for-old-compilers.patch

   1 From 0b9ce550c4f60a69da558da6044e1b394256b43c Mon Sep 17 00:00:00 2001
   2 From: Ferruh Yigit <ferruh.yigit@intel.com>
   3 Date: Thu, 6 Apr 2017 18:05:09 +0100
   4 Subject: [PATCH] net/thunderx: disable PMD for old compilers
   5
   6 Disable for gcc < 4.7 and icc <= 14.0
   7
   8 PMD uses some compiler builtins and new compiler options. Tested with
   9 gcc 4.5.1 and following were not supported:
  10
  11 option:
  12 -Ofast
  13
  14 macros:
  15 _Static_assert
  16
  17 __ORDER_LITTLE_ENDIAN__
  18 __ORDER_BIG_ENDIAN__
  19 __BYTE_ORDER__
  20
  21 __atomic_fetch_add
  22 __ATOMIC_ACQUIRE
  23 __atomic_load_n
  24 __ATOMIC_RELAXED
  25 __atomic_store_n
  26 __ATOMIC_RELEASE
  27
  28 It is not easy to fix all in PMD, disabling PMD for older compilers.
  29
  30 Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
  31 ---
  32  drivers/net/Makefile                     | 5 +++++
  33  mk/toolchain/gcc/rte.toolchain-compat.mk | 5 +++++
  34  mk/toolchain/icc/rte.toolchain-compat.mk | 5 +++++
  35  3 files changed, 15 insertions(+)
  36
  37 Origin: http://dpdk.org/browse/dpdk/commit/?id=0b9ce550c4f60a69da558da6044e1b394256b43c
  38 Original-Author: Ferruh Yigit <ferruh.yigit@intel.com>
  39 Bug-Ubuntu: https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/1691659
  40 Author: Christian Ehrhardt <christian.ehrhardt@canonical.com>
  41 Last-Update: 2017-05-18
  42
  43 --- a/drivers/net/Makefile
  44 +++ b/drivers/net/Makefile
  45 @@ -31,6 +31,11 @@
  46
  47  include $(RTE_SDK)/mk/rte.vars.mk
  48
  49 +# set in mk/toolchain/xxx/rte.toolchain-compat.mk
  50 +ifeq ($(CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD),d)
  51 +        $(warning thunderx pmd is not supported by old compilers)
  52 +endif
  53 +
  54  DIRS-$(CONFIG_RTE_LIBRTE_PMD_AF_PACKET) += af_packet
  55  DIRS-$(CONFIG_RTE_LIBRTE_BNX2X_PMD) += bnx2x
  56  DIRS-$(CONFIG_RTE_LIBRTE_PMD_BOND) += bonding
  57 --- a/mk/toolchain/gcc/rte.toolchain-compat.mk
  58 +++ b/mk/toolchain/gcc/rte.toolchain-compat.mk
  59 @@ -89,4 +89,9 @@
  60         ifeq ($(shell test $(GCC_VERSION) -lt 42 && echo 1), 1)
  61                 MACHINE_CFLAGS := $(filter-out -march% -mtune% -msse%,$(MACHINE_CFLAGS))
  62         endif
  63 +
  64 +       # Disable thunderx PMD for gcc < 4.7
  65 +       ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1)
  66 +               CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD=d
  67 +       endif
  68  endif
  69 --- a/mk/toolchain/icc/rte.toolchain-compat.mk
  70 +++ b/mk/toolchain/icc/rte.toolchain-compat.mk
  71 @@ -72,4 +72,9 @@
  72                 # remove march options
  73                 MACHINE_CFLAGS := $(patsubst -march=%,-xSSE3,$(MACHINE_CFLAGS))
  74         endif
  75 +
  76 +       # Disable thunderx PMD for icc <= 14.0
  77 +       ifeq ($(shell test $(ICC_MAJOR_VERSION) -le 14 && echo 1), 1)
  78 +               CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD=d
  79 +       endif
  80  endif