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selftests: vm: Do not override definition of ARCH

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Independent builds of the vm selftests is currently broken because
commit 7549b33642 ("selftests: vm: Build/Run 64bit tests only on
64bit arch") overrides the value of ARCH with the machine name from
uname. This does not always match the architecture names used for
tasks like header installation.

E.g. for building tests on powerpc64, we need ARCH=powerpc
and not ARCH=ppc64 or ARCH=ppc64le. Otherwise, the build
fails as shown below.

  $ uname -m
  ppc64le

  $ make -C tools/testing/selftests/vm
  make: Entering directory '/home/sandipan/linux/tools/testing/selftests/vm'
  make --no-builtin-rules ARCH=ppc64le -C ../../../.. headers_install
  make[1]: Entering directory '/home/sandipan/linux'
  Makefile:653: arch/ppc64le/Makefile: No such file or directory
  make[1]: *** No rule to make target 'arch/ppc64le/Makefile'.  Stop.
  make[1]: Leaving directory '/home/sandipan/linux'
  ../lib.mk:50: recipe for target 'khdr' failed
  make: *** [khdr] Error 2
  make: Leaving directory '/home/sandipan/linux/tools/testing/selftests/vm'

Fixes: 7549b33642 ("selftests: vm: Build/Run 64bit tests only on 64bit arch")
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Sandipan Das 2020-01-30 12:31:18 +05:30 committed by Shuah Khan
parent 8f3d9f3542
commit 24c3f063c5
1 changed files with 2 additions and 2 deletions
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4
tools/testing/selftests/vm/Makefile
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@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
# Makefile for vm selftests
uname_M := $(shell uname -m 2>/dev/null || echo not)
ARCH ?= $(shell echo $(uname_M) | sed -e 's/aarch64.*/arm64/')
MACHINE ?= $(shell echo $(uname_M) | sed -e 's/aarch64.*/arm64/')
CFLAGS = -Wall -I ../../../../usr/include $(EXTRA_CFLAGS)
LDLIBS = -lrt
@ -20,7 +20,7 @@ TEST_GEN_FILES += thuge-gen
TEST_GEN_FILES += transhuge-stress
TEST_GEN_FILES += userfaultfd
ifneq (,$(filter $(ARCH),arm64 ia64 mips64 parisc64 ppc64 riscv64 s390x sh64 sparc64 x86_64))
ifneq (,$(filter $(MACHINE),arm64 ia64 mips64 parisc64 ppc64 riscv64 s390x sh64 sparc64 x86_64))
TEST_GEN_FILES += va_128TBswitch
TEST_GEN_FILES += virtual_address_range
TEST_GEN_FILES += write_to_hugetlbfs