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authorJiri Kosina <jkosina@suse.cz>2019-05-11 00:47:50 +0300
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2019-05-11 00:53:29 +0300
commit56e33afd7757d5da2664fb797f2544ce167176be (patch)
treeb86351525627ac853df3c0df5028699147bbe295 /arch/x86/include/asm/livepatch.h
parent562e14f72292249e52e6346a9e3a30be652b0cf6 (diff)
downloadlinux-56e33afd7757d5da2664fb797f2544ce167176be.tar.xz
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/x86/include/asm/livepatch.h')
-rw-r--r--arch/x86/include/asm/livepatch.h5
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/x86/include/asm/livepatch.h b/arch/x86/include/asm/livepatch.h
index 2f2bdf0662f8..a66f6706c2de 100644
--- a/arch/x86/include/asm/livepatch.h
+++ b/arch/x86/include/asm/livepatch.h
@@ -24,11 +24,6 @@
#include <asm/setup.h>
#include <linux/ftrace.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->ip = ip;