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Rao" Subject: Re: [PATCH v2 15/39] x86/ibt,kprobes: Fix more +0 assumptions To: Peter Zijlstra Cc: alexei.starovoitov@gmail.com, alyssa.milburn@intel.com, andrew.cooper3@citrix.com, hjl.tools@gmail.com, joao@overdrivepizza.com, jpoimboe@redhat.com, keescook@chromium.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, mbenes@suse.cz, Masami Hiramatsu , ndesaulniers@google.com, rostedt@goodmis.org, samitolvanen@google.com, x86@kernel.org References: <20220224145138.952963315@infradead.org> <20220224151322.892372059@infradead.org> <20220228150705.aab2d654b973109bab070ffe@kernel.org> <20220228232513.GH11184@worktop.programming.kicks-ass.net> <20220301114905.e11146ad69d6e01998101c3b@kernel.org> <1646154463.4r1sh4kjf0.naveen@linux.ibm.com> <20220301191245.GI11184@worktop.programming.kicks-ass.net> <20220301200547.GK11184@worktop.programming.kicks-ass.net> In-Reply-To: <20220301200547.GK11184@worktop.programming.kicks-ass.net> MIME-Version: 1.0 User-Agent: astroid/4d6b06ad (https://github.com/astroidmail/astroid) Message-Id: <1646236571.m56yc0kmzw.naveen@linux.ibm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: F9eSvP7ZQOwr-b1w8dxU4p3lDBeCfBjZ X-Proofpoint-ORIG-GUID: yuAjbp7usWWFQdDwgeH5y0sfWKFvC8e2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-03-02_12,2022-02-26_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxscore=0 bulkscore=0 phishscore=0 spamscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 suspectscore=0 impostorscore=0 mlxlogscore=999 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2203020068 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Peter Zijlstra wrote: >=20 > How does this look? I gave this a quick test on powerpc and this looks good to me. > --- a/include/linux/kprobes.h > +++ b/include/linux/kprobes.h > @@ -265,7 +265,6 @@ extern int arch_init_kprobes(void); > extern void kprobes_inc_nmissed_count(struct kprobe *p); > extern bool arch_within_kprobe_blacklist(unsigned long addr); > extern int arch_populate_kprobe_blacklist(void); > -extern bool arch_kprobe_on_func_entry(unsigned long offset); There is a __weak definition of this function in kernel/kprobes.c which=20 should also be removed. Thanks, Naveen