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authorJiri Kosina <jkosina@suse.cz>2019-05-10 23:47:50 +0200
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2019-05-10 17:53:29 -0400
commit56e33afd7757d5da2664fb797f2544ce167176be (patch)
treeb86351525627ac853df3c0df5028699147bbe295 /arch/s390
parent562e14f72292249e52e6346a9e3a30be652b0cf6 (diff)
downloadlinux-56e33afd7757d5da2664fb797f2544ce167176be.tar.bz2
livepatch: Remove klp_check_compiler_support()
The only purpose of klp_check_compiler_support() is to make sure that we are not using ftrace on x86 via mcount (because that's executed only after prologue has already happened, and that's too late for livepatching purposes). Now that mcount is not supported by ftrace any more, there is no need for klp_check_compiler_support() either. Link: http://lkml.kernel.org/r/nycvar.YFH.7.76.1905102346100.17054@cbobk.fhfr.pm Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/livepatch.h5
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/s390/include/asm/livepatch.h b/arch/s390/include/asm/livepatch.h
index 672f95b12d40..818612b784cd 100644
--- a/arch/s390/include/asm/livepatch.h
+++ b/arch/s390/include/asm/livepatch.h
@@ -13,11 +13,6 @@
#include <asm/ptrace.h>
-static inline int klp_check_compiler_support(void)
-{
- return 0;
-}
-
static inline void klp_arch_set_pc(struct pt_regs *regs, unsigned long ip)
{
regs->psw.addr = ip;