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| author | Peter Zijlstra <peterz@infradead.org> | 2022-05-02 13:30:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-14 19:32:44 +0300 |
| commit | cb8da20d71f983410a9bd3f4f0a7c09cedff169b (patch) | |
| tree | 505aea6d8fe37a167e63f6b77ed0ead8057cd4d0 /drivers/block | |
| parent | 320acaf84a6469492f3355b75562f7472b91aaf2 (diff) | |
| download | linux-cb8da20d71f983410a9bd3f4f0a7c09cedff169b.tar.xz | |
jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds
[ Upstream commit 656d054e0a15ec327bd82801ccd58201e59f6896 ]
When building x86_64 with JUMP_LABEL=n it's possible for
instrumentation to sneak into noinstr:
vmlinux.o: warning: objtool: exit_to_user_mode+0x14: call to static_key_count.constprop.0() leaves .noinstr.text section
vmlinux.o: warning: objtool: syscall_exit_to_user_mode+0x2d: call to static_key_count.constprop.0() leaves .noinstr.text section
vmlinux.o: warning: objtool: irqentry_exit_to_user_mode+0x1b: call to static_key_count.constprop.0() leaves .noinstr.text section
Switch to arch_ prefixed atomic to avoid the explicit instrumentation.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/block')
0 files changed, 0 insertions, 0 deletions