linux_dsm_epyc7002/arch/powerpc
Tony Ambardar 34ceafa62f powerpc: fix EDEADLOCK redefinition error in uapi/asm/errno.h
commit 7de21e679e6a789f3729e8402bc440b623a28eae upstream.

A few archs like powerpc have different errno.h values for macros
EDEADLOCK and EDEADLK. In code including both libc and linux versions of
errno.h, this can result in multiple definitions of EDEADLOCK in the
include chain. Definitions to the same value (e.g. seen with mips) do
not raise warnings, but on powerpc there are redefinitions changing the
value, which raise warnings and errors (if using "-Werror").

Guard against these redefinitions to avoid build errors like the following,
first seen cross-compiling libbpf v5.8.9 for powerpc using GCC 8.4.0 with
musl 1.1.24:

  In file included from ../../arch/powerpc/include/uapi/asm/errno.h:5,
                   from ../../include/linux/err.h:8,
                   from libbpf.c:29:
  ../../include/uapi/asm-generic/errno.h:40: error: "EDEADLOCK" redefined [-Werror]
   #define EDEADLOCK EDEADLK

  In file included from toolchain-powerpc_8540_gcc-8.4.0_musl/include/errno.h:10,
                   from libbpf.c:26:
  toolchain-powerpc_8540_gcc-8.4.0_musl/include/bits/errno.h:58: note: this is the location of the previous definition
   #define EDEADLOCK       58

  cc1: all warnings being treated as errors

Cc: Stable <stable@vger.kernel.org>
Reported-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Tony Ambardar <Tony.Ambardar@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200917135437.1238787-1-Tony.Ambardar@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-11 14:47:35 +02:00
..
boot powerpc/boot: Fix build of dts/fsl 2020-12-30 11:54:01 +01:00
configs powerpc updates for 5.10 2020-10-16 12:21:15 -07:00
crypto crypto: powerpc/crc-vpmsum_test - Fix sparse endianness warning 2020-09-04 17:57:15 +10:00
include powerpc: fix EDEADLOCK redefinition error in uapi/asm/errno.h 2021-05-11 14:47:35 +02:00
kernel powerpc/eeh: Fix EEH handling for hugepages in ioremap space. 2021-05-11 14:47:35 +02:00
kexec powerpc/kexec_file: Use current CPU info while setting up FDT 2021-05-11 14:47:35 +02:00
kvm KVM: PPC: Make the VMX instruction emulation routines static 2021-03-04 11:38:01 +01:00
lib powerpc/32: Fix boot failure with CONFIG_STACKPROTECTOR 2021-05-11 14:47:35 +02:00
math-emu
mm powerpc/mm: Fix verification of MMU_FTR_TYPE_44x 2020-12-30 11:54:16 +01:00
net bpf, powerpc: Fix misuse of fallthrough in bpf_jit_comp() 2020-09-29 16:39:11 +02:00
oprofile powerpc/oprofile: fix spelling mistake "contex" -> "context" 2020-08-25 01:31:33 +10:00
perf powerpc/perf: Record counter overflow always if SAMPLE_IP is unset 2021-03-17 17:06:23 +01:00
platforms powerpc/pseries: Don't enforce MSI affinity with kdump 2021-03-17 17:06:10 +01:00
purgatory powerpc/kexec_file: Enable early kernel OPAL calls 2020-07-29 23:47:55 +10:00
sysdev powerpc: sysdev: add missing iounmap() on error in mpic_msgr_probe() 2021-01-06 14:56:53 +01:00
tools powerpc/tools: Remove 90 line limit in checkpatch script 2020-09-08 22:57:11 +10:00
xmon powerpc/xmon: Change printk() to pr_cont() 2020-12-30 11:54:16 +01:00
Kbuild powerpc/kexec: Move kexec files into a dedicated subdir. 2019-11-21 15:41:34 +11:00
Kconfig powerpc/47x: Disable 256k page size 2021-03-04 11:38:01 +01:00
Kconfig.debug powerpc: Remove Xilinx PPC405/PPC440 support 2020-05-28 23:24:34 +10:00
Makefile Kbuild fixes for v5.10 (2nd) 2020-12-06 10:31:39 -08:00
Makefile.postlink powerpc: unrel_branch_check.sh: use nm to find symbol value 2020-09-02 11:00:22 +10:00