From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============3884135255733650860==" MIME-Version: 1.0 From: Yuanhan Liu To: lkp@lists.01.org Subject: 18aa8a45 +1.03% kernel-size.text Date: Mon, 17 Nov 2014 12:01:03 +0800 Message-ID: <20141117040103.GO300@yliu-dev.sh.intel.com> List-Id: --===============3884135255733650860== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Hi Kees, JFYI, we noticed that your following commit make the kernel size a bit larger: 1.03% git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git gcc-bug perf change: 1.03% kernel-size.text RESULT_ROOT: /result/wsm/boot/performance-1/debian-x86_64.cgz/x86_64-rhel/8= 562cc73288ff2f399625e2965b8f5cc644b5401/0 18aa8a45645640c7a44d15ebb7cb2270d3c23af8 is the first bad commit commit 18aa8a45645640c7a44d15ebb7cb2270d3c23af8 Author: Kees Cook AuthorDate: Wed May 7 10:50:04 2014 -0700 Commit: Kees Cook CommitDate: Fri Nov 14 13:35:42 2014 -0800 build: re-enable size builtin for gcc 4.8 and later = Most cases of strict copy from/to user checking are caught by gcc now. This re-enables it for gcc 4.8 and later so the gcc bug can be explored. = Signed-off-by: Kees Cook include/linux/compiler-gcc4.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --yliu --===============3884135255733650860==--