From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Murray Subject: [PATCH 03/10] arm: perf: add additional validation to set_event_filter Date: Fri, 16 Nov 2018 10:24:06 +0000 Message-ID: <1542363853-13849-4-git-send-email-andrew.murray@arm.com> References: <1542363853-13849-1-git-send-email-andrew.murray@arm.com> Return-path: In-Reply-To: <1542363853-13849-1-git-send-email-andrew.murray@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Shawn Guo , Sascha Hauer , Will Deacon , Mark Rutland , Benjamin Herrenschmidt , Thomas Gleixner , Borislav Petkov , x86@kernel.org Cc: linux-alpha@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org The armv7pmu driver doesn't support host/guest mode exclusion so let's report this when set_event_filter is called with these exclusion flags set. Signed-off-by: Andrew Murray --- arch/arm/kernel/perf_event_v7.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c index a4fb0f8..c4c9fbb 100644 --- a/arch/arm/kernel/perf_event_v7.c +++ b/arch/arm/kernel/perf_event_v7.c @@ -1074,6 +1074,8 @@ static int armv7pmu_set_event_filter(struct hw_perf_event *event, if (attr->exclude_idle) return -EPERM; + if (attr->exclude_host || attr->exclude_guest) + return -EPERM; if (attr->exclude_user) config_base |= ARMV7_EXCLUDE_USER; if (attr->exclude_kernel) -- 2.7.4