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| author |   Naohiro Aota <naohiro.aota@wdc.com> | 2019-07-12 19:15:55 +0900 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2019-07-12 17:35:07 +0200 |
| commit | e9a1379f9219be439f47a0f063431a92dc529eda (patch) | |
| tree | 3625670e520b344fc58d8fe321df1f0d9be88f10 /arch/mips/mm/dma-noncoherent.c | |
| parent | Merge tag 'tag-chrome-platform-for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux (diff) | |
| download | linux-dev-e9a1379f9219be439f47a0f063431a92dc529eda.tar.xz linux-dev-e9a1379f9219be439f47a0f063431a92dc529eda.zip | |
x86/vdso: Fix flip/flop vdso build bug
Two consecutive "make" on an already compiled kernel tree will show
different behavior:
$ make
CALL scripts/checksyscalls.sh
CALL scripts/atomic/check-atomics.sh
DESCEND objtool
CHK include/generated/compile.h
VDSOCHK arch/x86/entry/vdso/vdso64.so.dbg
VDSOCHK arch/x86/entry/vdso/vdso32.so.dbg
Kernel: arch/x86/boot/bzImage is ready (#3)
Building modules, stage 2.
MODPOST 12 modules
$ make
make
CALL scripts/checksyscalls.sh
CALL scripts/atomic/check-atomics.sh
DESCEND objtool
CHK include/generated/compile.h
VDSO arch/x86/entry/vdso/vdso64.so.dbg
OBJCOPY arch/x86/entry/vdso/vdso64.so
VDSO2C arch/x86/entry/vdso/vdso-image-64.c
CC arch/x86/entry/vdso/vdso-image-64.o
VDSO arch/x86/entry/vdso/vdso32.so.dbg
OBJCOPY arch/x86/entry/vdso/vdso32.so
VDSO2C arch/x86/entry/vdso/vdso-image-32.c
CC arch/x86/entry/vdso/vdso-image-32.o
AR arch/x86/entry/vdso/built-in.a
AR arch/x86/entry/built-in.a
AR arch/x86/built-in.a
GEN .version
CHK include/generated/compile.h
UPD include/generated/compile.h
CC init/version.o
AR init/built-in.a
LD vmlinux.o
<snip>
This is causing "LD vmlinux" once every two times even without any
modifications. This is the same bug fixed in commit 92a4728608a8
("x86/boot: Fix if_changed build flip/flop bug"). Two "if_changed" cannot
be used in one target.
Fix this merging two commands into one function.
Fixes: 7ac870747988 ("x86/vdso: Switch to generic vDSO implementation")
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Link: https://lkml.kernel.org/r/20190712101556.17833-1-naohiro.aota@wdc.com
Diffstat (limited to 'arch/mips/mm/dma-noncoherent.c')
0 files changed, 0 insertions, 0 deletions