# git rev-parse -q --verify 2d83b0f30c1483a556c8aa1f7d891006fffcd5e0^{commit}
2d83b0f30c1483a556c8aa1f7d891006fffcd5e0
already have revision, skipping fetch
# git checkout -q -f -B kisskb 2d83b0f30c1483a556c8aa1f7d891006fffcd5e0
# git clean -qxdf
# < git log -1
# commit 2d83b0f30c1483a556c8aa1f7d891006fffcd5e0
# Author: Ard Biesheuvel <ardb@kernel.org>
# Date:   Wed Oct 28 09:04:33 2020 +0100
# 
#     powerpc: Avoid broken GCC __attribute__((optimize))
#     
#     Commit 7053f80d9696 ("powerpc/64: Prevent stack protection in early
#     boot") introduced a couple of uses of __attribute__((optimize)) with
#     function scope, to disable the stack protector in some early boot
#     code.
#     
#     Unfortunately, and this is documented in the GCC man pages [0],
#     overriding function attributes for optimization is broken, and is only
#     supported for debug scenarios, not for production: the problem appears
#     to be that setting GCC -f flags using this method will cause it to
#     forget about some or all other optimization settings that have been
#     applied.
#     
#     So the only safe way to disable the stack protector is to disable it
#     for the entire source file.
#     
#     [0] https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html
#     
#     Fixes: 7053f80d9696 ("powerpc/64: Prevent stack protection in early boot")
#     Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
#     [mpe: Drop one remaining use of __nostackprotector, reported by snowpatch]
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20201028080433.26799-1-ardb@kernel.org
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/mips-linux/bin/mips-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/mips-linux/bin/mips-linux-ld --version
# < git log --format=%s --max-count=1 2d83b0f30c1483a556c8aa1f7d891006fffcd5e0
# < make -s -j 120 ARCH=mips O=/kisskb/build/powerpc-next_mips-defconfig_mips-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/mips-linux/bin/mips-linux-  defconfig
# make -s -j 120 ARCH=mips O=/kisskb/build/powerpc-next_mips-defconfig_mips-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/mips-linux/bin/mips-linux-  
/kisskb/src/drivers/net/ethernet/mscc/ocelot_vcap.c: In function 'is1_entry_set':
/kisskb/src/drivers/net/ethernet/mscc/ocelot_vcap.c:755:11: warning: missing braces around initializer [-Wmissing-braces]
    struct ocelot_vcap_u16 etype = {0};
           ^
/kisskb/src/drivers/net/ethernet/mscc/ocelot_vcap.c:755:11: warning: (near initialization for 'etype.value') [-Wmissing-braces]
FIT description: Linux 5.10.0-rc2-g2d83b0f30c14
Created:         Tue Nov  3 03:48:38 2020
 Image 0 (kernel@0)
  Description:  Linux 5.10.0-rc2-g2d83b0f30c14
  Created:      Tue Nov  3 03:48:38 2020
  Type:         Kernel Image
  Compression:  gzip compressed
  Data Size:    5178028 Bytes = 5056.67 KiB = 4.94 MiB
  Architecture: MIPS
  OS:           Linux
  Load Address: 0x80100000
  Entry Point:  0x8097c360
  Hash algo:    sha1
  Hash value:   8530c5fef7fba50aa8e8e6048ea69b2ee594626f
 Image 1 (fdt@boston)
  Description:  img,boston Device Tree
  Created:      Tue Nov  3 03:48:38 2020
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    3793 Bytes = 3.70 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   4799f50d688573234da6e9d7701234d394759ef4
 Image 2 (fdt@ni169445)
  Description:  NI 169445 device tree
  Created:      Tue Nov  3 03:48:38 2020
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    1871 Bytes = 1.83 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   51b89b31605ee62038c8468c429af091dfc75ec7
 Image 3 (fdt@ocelot_pcb123)
  Description:  MSCC Ocelot PCB123 Device Tree
  Created:      Tue Nov  3 03:48:38 2020
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    4659 Bytes = 4.55 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   5bcb6e4f21e8e5372544aa130b3bd097355a9050
 Image 4 (fdt@ocelot_pcb120)
  Description:  MSCC Ocelot PCB120 Device Tree
  Created:      Tue Nov  3 03:48:38 2020
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    5418 Bytes = 5.29 KiB = 0.01 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   93d882f2009a217e0fa9dab94788535ed2be8476
 Image 5 (fdt@xilfpga)
  Description:  MIPSfpga (xilfpga) Device Tree
  Created:      Tue Nov  3 03:48:38 2020
  Type:         Flat Device Tree
  Compression:  uncompressed
  Data Size:    2708 Bytes = 2.64 KiB = 0.00 MiB
  Architecture: MIPS
  Hash algo:    sha1
  Hash value:   63d058b780f65e22da30f0a183433765f1807f1d
 Default Configuration: 'conf@default'
 Configuration 0 (conf@default)
  Description:  Generic Linux kernel
  Kernel:       kernel@0
 Configuration 1 (conf@boston)
  Description:  Boston Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@boston
 Configuration 2 (conf@ni169445)
  Description:  NI 169445 Linux Kernel
  Kernel:       kernel@0
  FDT:          fdt@ni169445
 Configuration 3 (conf@ocelot_pcb123)
  Description:  Ocelot Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@ocelot_pcb123
 Configuration 4 (conf@ocelot_pcb120)
  Description:  Ocelot Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@ocelot_pcb120
 Configuration 5 (conf@xilfpga)
  Description:  MIPSfpga Linux kernel
  Kernel:       kernel@0
  FDT:          fdt@xilfpga
Completed OK
# rm -rf /kisskb/build/powerpc-next_mips-defconfig_mips-gcc4.9
# Build took: 0:01:02.935049