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Simon Guo
f36dbfe1a5
GCC 7 will take "r2" in clobber list as an error and it will get
following build errors for powerpc ptrace selftests even with -fno-pic
option:
ptrace-tm-vsx.c: In function ‘tm_vsx’:
ptrace-tm-vsx.c:42:2: error: PIC register clobbered by ‘r2’ in ‘asm’
asm __volatile__(
^~~
make[1]: *** [ptrace-tm-vsx] Error 1
ptrace-tm-spd-vsx.c: In function ‘tm_spd_vsx’:
ptrace-tm-spd-vsx.c:55:2: error: PIC register clobbered by ‘r2’ in ‘asm’
asm __volatile__(
^~~
make[1]: *** [ptrace-tm-spd-vsx] Error 1
ptrace-tm-spr.c: In function ‘tm_spr’:
ptrace-tm-spr.c:46:2: error: PIC register clobbered by ‘r2’ in ‘asm’
asm __volatile__(
^~~
Fix the build error by removing "r2" from the clobber list. None of
these asm blocks actually clobber r2.
Reported-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Tested-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.