From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: [PATCH v2 20/44] cpuidle,intel_idle: Fix CPUIDLE_FLAG_IBRS Date: Mon, 19 Sep 2022 11:59:59 +0200 Message-ID: <20220919101521.676713943@infradead.org> References: <20220919095939.761690562@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 45446416EF DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org B4F7B40B74 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 66915416ED DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 0821C40B74 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-ID:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=KSLnjMu353Hxa4O11Me8JnVia/sjgKM0LDIwoSdP0MI=; b=Ick7cd7MD8jj+jy/FoOvcOldv4 BXzqJ9/zYCWxDMBoaCpMKWTDlkrsjm+ciYbDhTzmEduHgIHGZFU8eu/9UCVWqxQV5DHTA1YUSp8Tx faKa0oJE6mpLjVarzv5uwBfakpGivkUsYKynKrWjgGyaJKHf7nQ9405HsIrOCwT0Hbb/sk63vSfvE BnxzmNvGwkIXkzdN929OghR8ABtTQgm7zoz4WiUA1zH89oWT84eGaf1f8VAx4krcpDtLRD5v1HZmI M9aENqhsFuSeArxTtlOkUckCjONRAV+wT1xYhtyTytfY6G6hBn+L1OC7ifjz0W0zmPKhKL2PE+41m nB7zCSpw==; List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" To: peterz@infradead.org Cc: juri.lelli@redhat.com, rafael@kernel.org, catalin.marinas@arm.com, linus.walleij@linaro.org, bsegall@google.com, guoren@kernel.org, pavel@ucw.cz, agordeev@linux.ibm.com, linux-arch@vger.kernel.org, vincent.guittot@linaro.org, mpe@ellerman.id.au, chenhuacai@kernel.org, christophe.leroy@csgroup.eu, linux-acpi@vger.kernel.org, agross@kernel.org, geert@linux-m68k.org, linux-imx@nxp.com, vgupta@kernel.org, mattst88@gmail.com, mturquette@baylibre.com, sammy@sammy.net, pmladek@suse.com, linux-pm@vger.kernel.org, Sascha Hauer , linux-um@lists.infradead.org, npiggin@gmail.com, tglx@linutronix.de, linux-omap@vger.kernel.org, dietmar.eggemann@arm.com, andreyknvl@gmail.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, senozhatsky@chromium.org, svens@linux.ibm.com, jolsa@kernel.org, tj@kernel.org, Andrew Morton vmlinux.o: warning: objtool: intel_idle_ibrs+0x17: call to spec_ctrl_current() leaves .noinstr.text section vmlinux.o: warning: objtool: intel_idle_ibrs+0x27: call to wrmsrl.constprop.0() leaves .noinstr.text section Signed-off-by: Peter Zijlstra (Intel) --- arch/x86/kernel/cpu/bugs.c | 2 +- drivers/idle/intel_idle.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -79,7 +79,7 @@ void write_spec_ctrl_current(u64 val, bo wrmsrl(MSR_IA32_SPEC_CTRL, val); } -u64 spec_ctrl_current(void) +noinstr u64 spec_ctrl_current(void) { return this_cpu_read(x86_spec_ctrl_current); } --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -181,12 +181,12 @@ static __cpuidle int intel_idle_ibrs(str int ret; if (smt_active) - wrmsrl(MSR_IA32_SPEC_CTRL, 0); + native_wrmsrl(MSR_IA32_SPEC_CTRL, 0); ret = __intel_idle(dev, drv, index); if (smt_active) - wrmsrl(MSR_IA32_SPEC_CTRL, spec_ctrl); + native_wrmsrl(MSR_IA32_SPEC_CTRL, spec_ctrl); return ret; }