From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DC62BC43334 for ; Mon, 13 Jun 2022 18:50:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:Cc:To:Subject:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=O6dzWKCwEUtOcyXBqy0YJMmeE9LlcchggOmCQj0rpNo=; b=m7ws9m0OfmGByTH/UnU7i54bgd DZKLvopdYCUfO7Vbud/SOFmau/pZVQbhoE8FHQV7wlAidtRLSrBWE/gvDbgOuNr2MunBwMHJ7P96J EW9eiXyCV1hUitRj2eZI61ZGknfQ+oj2/aCa7tofzg4UepjlRPRJBdXesieKbUzZLYoHwT6DzVF77 KJW2b0tR1Yp3B6wRSw/ZAaZhu3r9viQOwO1KEjLwqFDbqKhZeEGqHtecHy2UGT+9QCxPS6W9LyWTl 0bxk7Znahfydx/bVXxhtl0Ys8PZ+UC+HNBrGh2AKP55FGMYBhxoq8xM9DEvi9Cz67TDzfW/XmJgL1 3Ehd03aw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o0p8o-005DUb-H6; Mon, 13 Jun 2022 18:50:22 +0000 Received: from outgoing-stata.csail.mit.edu ([128.30.2.210]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o0p8k-005DSg-Ur; Mon, 13 Jun 2022 18:50:20 +0000 Received: from [77.23.249.31] (helo=srivatsab-a02.vmware.com) by outgoing-stata.csail.mit.edu with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1o0p7j-0002lx-0j; Mon, 13 Jun 2022 14:49:15 -0400 Subject: Re: [PATCH 29/36] cpuidle,xenpv: Make more PARAVIRT_XXL noinstr clean To: Peter Zijlstra Cc: rth@twiddle.net, ink@jurassic.park.msu.ru, mattst88@gmail.com, vgupta@kernel.org, linux@armlinux.org.uk, ulli.kroll@googlemail.com, linus.walleij@linaro.org, shawnguo@kernel.org, Sascha Hauer , kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, tony@atomide.com, khilman@kernel.org, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, bcain@quicinc.com, chenhuacai@kernel.org, kernel@xen0n.name, geert@linux-m68k.org, sammy@sammy.net, monstr@monstr.eu, tsbogend@alpha.franken.de, dinguyen@kernel.org, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com, James.Bottomley@HansenPartnership.com, deller@gmx.de, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, ysato@users.sourceforge.jp, dalias@libc.org, davem@davemloft.net, richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, acme@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, namhyung@kernel.org, jgross@suse.com, amakhalov@vmware.com, pv-drivers@vmware.com, boris.ostrovsky@oracle.com, chris@zankel.net, jcmvbkbc@gmail.com, rafael@kernel.org, lenb@kernel.org, pavel@ucw.cz, gregkh@linuxfoundation.org, mturquette@baylibre.com, sboyd@kernel.org, daniel.lezcano@linaro.org, lpieralisi@kernel.org, sudeep.holla@arm.com, agross@kernel.org, bjorn.andersson@linaro.org, anup@brainfault.org, thierry.reding@gmail.com, jonathanh@nvidia.com, jacob.jun.pan@linux.intel.com, Arnd Bergmann , yury.norov@gmail.com, andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk, rostedt@goodmis.org, pmladek@suse.com, senozhatsky@chromium.org, john.ogness@linutronix.de, paulmck@kernel.org, frederic@kernel.org, quic_neeraju@quicinc.com, josh@joshtriplett.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, joel@joelfernandes.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, jpoimboe@kernel.org, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-perf-users@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org, linux-xtensa@linux-xtensa.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arch@vger.kernel.org, rcu@vger.kernel.org References: <20220608142723.103523089@infradead.org> <20220608144517.759631860@infradead.org> From: "Srivatsa S. Bhat" Message-ID: <510b9b68-7d53-7d4d-5a05-37fbd199eb4b@csail.mit.edu> Date: Mon, 13 Jun 2022 20:48:49 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20220608144517.759631860@infradead.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220613_115019_116680_EBF84E40 X-CRM114-Status: GOOD ( 14.21 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org On 6/8/22 4:27 PM, Peter Zijlstra wrote: > vmlinux.o: warning: objtool: acpi_idle_enter_s2idle+0xde: call to wbinvd() leaves .noinstr.text section > vmlinux.o: warning: objtool: default_idle+0x4: call to arch_safe_halt() leaves .noinstr.text section > vmlinux.o: warning: objtool: xen_safe_halt+0xa: call to HYPERVISOR_sched_op.constprop.0() leaves .noinstr.text section > > Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Srivatsa S. Bhat (VMware) Regards, Srivatsa VMware Photon OS > --- > arch/x86/include/asm/paravirt.h | 6 ++++-- > arch/x86/include/asm/special_insns.h | 4 ++-- > arch/x86/include/asm/xen/hypercall.h | 2 +- > arch/x86/kernel/paravirt.c | 14 ++++++++++++-- > arch/x86/xen/enlighten_pv.c | 2 +- > arch/x86/xen/irq.c | 2 +- > 6 files changed, 21 insertions(+), 9 deletions(-) > > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -168,7 +168,7 @@ static inline void __write_cr4(unsigned > PVOP_VCALL1(cpu.write_cr4, x); > } > > -static inline void arch_safe_halt(void) > +static __always_inline void arch_safe_halt(void) > { > PVOP_VCALL0(irq.safe_halt); > } > @@ -178,7 +178,9 @@ static inline void halt(void) > PVOP_VCALL0(irq.halt); > } > > -static inline void wbinvd(void) > +extern noinstr void pv_native_wbinvd(void); > + > +static __always_inline void wbinvd(void) > { > PVOP_ALT_VCALL0(cpu.wbinvd, "wbinvd", ALT_NOT(X86_FEATURE_XENPV)); > } > --- a/arch/x86/include/asm/special_insns.h > +++ b/arch/x86/include/asm/special_insns.h > @@ -115,7 +115,7 @@ static inline void wrpkru(u32 pkru) > } > #endif > > -static inline void native_wbinvd(void) > +static __always_inline void native_wbinvd(void) > { > asm volatile("wbinvd": : :"memory"); > } > @@ -179,7 +179,7 @@ static inline void __write_cr4(unsigned > native_write_cr4(x); > } > > -static inline void wbinvd(void) > +static __always_inline void wbinvd(void) > { > native_wbinvd(); > } > --- a/arch/x86/include/asm/xen/hypercall.h > +++ b/arch/x86/include/asm/xen/hypercall.h > @@ -382,7 +382,7 @@ MULTI_stack_switch(struct multicall_entr > } > #endif > > -static inline int > +static __always_inline int > HYPERVISOR_sched_op(int cmd, void *arg) > { > return _hypercall2(int, sched_op, cmd, arg); > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -233,6 +233,11 @@ static noinstr void pv_native_set_debugr > native_set_debugreg(regno, val); > } > > +noinstr void pv_native_wbinvd(void) > +{ > + native_wbinvd(); > +} > + > static noinstr void pv_native_irq_enable(void) > { > native_irq_enable(); > @@ -242,6 +247,11 @@ static noinstr void pv_native_irq_disabl > { > native_irq_disable(); > } > + > +static noinstr void pv_native_safe_halt(void) > +{ > + native_safe_halt(); > +} > #endif > > enum paravirt_lazy_mode paravirt_get_lazy_mode(void) > @@ -273,7 +283,7 @@ struct paravirt_patch_template pv_ops = > .cpu.read_cr0 = native_read_cr0, > .cpu.write_cr0 = native_write_cr0, > .cpu.write_cr4 = native_write_cr4, > - .cpu.wbinvd = native_wbinvd, > + .cpu.wbinvd = pv_native_wbinvd, > .cpu.read_msr = native_read_msr, > .cpu.write_msr = native_write_msr, > .cpu.read_msr_safe = native_read_msr_safe, > @@ -307,7 +317,7 @@ struct paravirt_patch_template pv_ops = > .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), > .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), > .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), > - .irq.safe_halt = native_safe_halt, > + .irq.safe_halt = pv_native_safe_halt, > .irq.halt = native_halt, > #endif /* CONFIG_PARAVIRT_XXL */ > > --- a/arch/x86/xen/enlighten_pv.c > +++ b/arch/x86/xen/enlighten_pv.c > @@ -1019,7 +1019,7 @@ static const typeof(pv_ops) xen_cpu_ops > > .write_cr4 = xen_write_cr4, > > - .wbinvd = native_wbinvd, > + .wbinvd = pv_native_wbinvd, > > .read_msr = xen_read_msr, > .write_msr = xen_write_msr, > --- a/arch/x86/xen/irq.c > +++ b/arch/x86/xen/irq.c > @@ -24,7 +24,7 @@ noinstr void xen_force_evtchn_callback(v > (void)HYPERVISOR_xen_version(0, NULL); > } > > -static void xen_safe_halt(void) > +static noinstr void xen_safe_halt(void) > { > /* Blocking includes an implicit local_irq_enable(). */ > if (HYPERVISOR_sched_op(SCHEDOP_block, NULL) != 0) > > _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A118C433EF for ; Mon, 13 Jun 2022 18:50:13 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 818A160BA1; Mon, 13 Jun 2022 18:50:13 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dl1IDs8-T6gw; Mon, 13 Jun 2022 18:50:12 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp3.osuosl.org (Postfix) with ESMTPS id 0C9A560E21; Mon, 13 Jun 2022 18:50:12 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id CAA58C0032; Mon, 13 Jun 2022 18:50:11 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8E83BC002D for ; Mon, 13 Jun 2022 18:50:10 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 5EEF660B2B for ; Mon, 13 Jun 2022 18:50:10 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id YgJZ0zord076 for ; Mon, 13 Jun 2022 18:50:09 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from outgoing-stata.csail.mit.edu (outgoing-stata.csail.mit.edu [128.30.2.210]) by smtp3.osuosl.org (Postfix) with ESMTPS id 5A1C060BA1 for ; Mon, 13 Jun 2022 18:50:09 +0000 (UTC) Received: from [77.23.249.31] (helo=srivatsab-a02.vmware.com) by outgoing-stata.csail.mit.edu with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1o0p7j-0002lx-0j; Mon, 13 Jun 2022 14:49:15 -0400 Subject: Re: [PATCH 29/36] cpuidle, xenpv: Make more PARAVIRT_XXL noinstr clean To: Peter Zijlstra References: <20220608142723.103523089@infradead.org> <20220608144517.759631860@infradead.org> From: "Srivatsa S. Bhat" Message-ID: <510b9b68-7d53-7d4d-5a05-37fbd199eb4b@csail.mit.edu> Date: Mon, 13 Jun 2022 20:48:49 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20220608144517.759631860@infradead.org> Content-Language: en-US Cc: juri.lelli@redhat.com, rafael@kernel.org, benh@kernel.crashing.org, linus.walleij@linaro.org, bsegall@google.com, guoren@kernel.org, pavel@ucw.cz, agordeev@linux.ibm.com, linux-clk@vger.kernel.org, linux-arch@vger.kernel.org, vincent.guittot@linaro.org, mpe@ellerman.id.au, chenhuacai@kernel.org, linux-acpi@vger.kernel.org, agross@kernel.org, geert@linux-m68k.org, linux-imx@nxp.com, catalin.marinas@arm.com, xen-devel@lists.xenproject.org, mattst88@gmail.com, mturquette@baylibre.com, sammy@sammy.net, pmladek@suse.com, linux-pm@vger.kernel.org, jiangshanlai@gmail.com, Sascha Hauer , linux-um@lists.infradead.org, acme@kernel.org, tglx@linutronix.de, linux-omap@vger.kernel.org, dietmar.eggemann@arm.com, rth@twiddle.net, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, senozhatsky@chromium.org, svens@linux.ibm.com, jolsa@kernel.org, paulus@samba.org, mark.rutland@arm.com, linux-ia64@vger.kernel.org, dave.hansen@linux.intel.com, virtualization@lists.linux-foundation.org, James.Bottomley@HansenPartnership.com, jcmvbkbc@gmail.com, thierry.reding@gmail.com, kernel@xen0n.name, quic_neeraju@quicinc.com, linux-s390@vger.kernel.org, vschneid@redhat.com, john.ogness@linutronix.de, ysato@users.sourceforge.jp, linux-sh@vger.kernel.org, festevam@gmail.com, deller@gmx.de, daniel.lezcano@linaro.org, jonathanh@nvidia.com, mathieu.desnoyers@efficios.com, frederic@kernel.org, lenb@kernel.org, linux-xtensa@linux-xtensa.org, kernel@pengutronix.de, gor@linux.ibm.com, linux-arm-msm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-m68k@lists.linux-m68k.org, shorne@gmail.com, linux-arm-kernel@lists.infradead.org, chris@zankel.net, sboyd@kernel.org, dinguyen@kernel.org, bristot@redhat.com, alexander.shishkin@linux.intel.com, lpieralisi@kernel.org, linux@rasmusvillemoes.dk, joel@joelfernandes.org, will@kernel.org, boris.ostrovsky@oracle.com, khilman@kernel.org, linux-csky@vger.kernel.org, pv-drivers@vmware.com, linux-snps-arc@lists.infradead.org, mgorman@suse.de, jacob.jun.pan@linux.intel.com, Arnd Bergmann , ulli.kroll@googlemail.com, vgupta@kernel.org, josh@joshtriplett.org, rostedt@goodmis.org, rcu@vger.kernel.org, bp@alien8.de, bcain@quicinc.com, tsbogend@alpha.franken.de, linux-parisc@vger.kernel.org, sudeep.holla@arm.com, shawnguo@kernel.org, davem@davemloft.net, dalias@libc.org, tony@atomide.com, amakhalov@vmware.com, bjorn.andersson@linaro.org, hpa@zytor.com, sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, anton.ivanov@cambridgegreys.com, jonas@southpole.se, yury.norov@gmail.com, richard@nod.at, x86@kernel.org, linux@armlinux.org.uk, mingo@redhat.com, aou@eecs.berkeley.edu, paulmck@kernel.org, hca@linux.ibm.com, stefan.kristiansson@saunalahti.fi, openrisc@lists.librecores.org, paul.walmsley@sifive.com, linux-tegra@vger.kernel.org, namhyung@kernel.org, andriy.shevchenko@linux.intel.com, jpoimboe@kernel.org, jgross@suse.com, monstr@monstr.eu, linux-mips@vger.kernel.org, palmer@dabbelt.com, anup@brainfault.org, ink@jurassic.park.msu.ru, johannes@sipsolutions.net, linuxppc-dev@lists.ozlabs.org X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" On 6/8/22 4:27 PM, Peter Zijlstra wrote: > vmlinux.o: warning: objtool: acpi_idle_enter_s2idle+0xde: call to wbinvd() leaves .noinstr.text section > vmlinux.o: warning: objtool: default_idle+0x4: call to arch_safe_halt() leaves .noinstr.text section > vmlinux.o: warning: objtool: xen_safe_halt+0xa: call to HYPERVISOR_sched_op.constprop.0() leaves .noinstr.text section > > Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Srivatsa S. Bhat (VMware) Regards, Srivatsa VMware Photon OS > --- > arch/x86/include/asm/paravirt.h | 6 ++++-- > arch/x86/include/asm/special_insns.h | 4 ++-- > arch/x86/include/asm/xen/hypercall.h | 2 +- > arch/x86/kernel/paravirt.c | 14 ++++++++++++-- > arch/x86/xen/enlighten_pv.c | 2 +- > arch/x86/xen/irq.c | 2 +- > 6 files changed, 21 insertions(+), 9 deletions(-) > > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -168,7 +168,7 @@ static inline void __write_cr4(unsigned > PVOP_VCALL1(cpu.write_cr4, x); > } > > -static inline void arch_safe_halt(void) > +static __always_inline void arch_safe_halt(void) > { > PVOP_VCALL0(irq.safe_halt); > } > @@ -178,7 +178,9 @@ static inline void halt(void) > PVOP_VCALL0(irq.halt); > } > > -static inline void wbinvd(void) > +extern noinstr void pv_native_wbinvd(void); > + > +static __always_inline void wbinvd(void) > { > PVOP_ALT_VCALL0(cpu.wbinvd, "wbinvd", ALT_NOT(X86_FEATURE_XENPV)); > } > --- a/arch/x86/include/asm/special_insns.h > +++ b/arch/x86/include/asm/special_insns.h > @@ -115,7 +115,7 @@ static inline void wrpkru(u32 pkru) > } > #endif > > -static inline void native_wbinvd(void) > +static __always_inline void native_wbinvd(void) > { > asm volatile("wbinvd": : :"memory"); > } > @@ -179,7 +179,7 @@ static inline void __write_cr4(unsigned > native_write_cr4(x); > } > > -static inline void wbinvd(void) > +static __always_inline void wbinvd(void) > { > native_wbinvd(); > } > --- a/arch/x86/include/asm/xen/hypercall.h > +++ b/arch/x86/include/asm/xen/hypercall.h > @@ -382,7 +382,7 @@ MULTI_stack_switch(struct multicall_entr > } > #endif > > -static inline int > +static __always_inline int > HYPERVISOR_sched_op(int cmd, void *arg) > { > return _hypercall2(int, sched_op, cmd, arg); > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -233,6 +233,11 @@ static noinstr void pv_native_set_debugr > native_set_debugreg(regno, val); > } > > +noinstr void pv_native_wbinvd(void) > +{ > + native_wbinvd(); > +} > + > static noinstr void pv_native_irq_enable(void) > { > native_irq_enable(); > @@ -242,6 +247,11 @@ static noinstr void pv_native_irq_disabl > { > native_irq_disable(); > } > + > +static noinstr void pv_native_safe_halt(void) > +{ > + native_safe_halt(); > +} > #endif > > enum paravirt_lazy_mode paravirt_get_lazy_mode(void) > @@ -273,7 +283,7 @@ struct paravirt_patch_template pv_ops = > .cpu.read_cr0 = native_read_cr0, > .cpu.write_cr0 = native_write_cr0, > .cpu.write_cr4 = native_write_cr4, > - .cpu.wbinvd = native_wbinvd, > + .cpu.wbinvd = pv_native_wbinvd, > .cpu.read_msr = native_read_msr, > .cpu.write_msr = native_write_msr, > .cpu.read_msr_safe = native_read_msr_safe, > @@ -307,7 +317,7 @@ struct paravirt_patch_template pv_ops = > .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), > .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), > .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), > - .irq.safe_halt = native_safe_halt, > + .irq.safe_halt = pv_native_safe_halt, > .irq.halt = native_halt, > #endif /* CONFIG_PARAVIRT_XXL */ > > --- a/arch/x86/xen/enlighten_pv.c > +++ b/arch/x86/xen/enlighten_pv.c > @@ -1019,7 +1019,7 @@ static const typeof(pv_ops) xen_cpu_ops > > .write_cr4 = xen_write_cr4, > > - .wbinvd = native_wbinvd, > + .wbinvd = pv_native_wbinvd, > > .read_msr = xen_read_msr, > .write_msr = xen_write_msr, > --- a/arch/x86/xen/irq.c > +++ b/arch/x86/xen/irq.c > @@ -24,7 +24,7 @@ noinstr void xen_force_evtchn_callback(v > (void)HYPERVISOR_xen_version(0, NULL); > } > > -static void xen_safe_halt(void) > +static noinstr void xen_safe_halt(void) > { > /* Blocking includes an implicit local_irq_enable(). */ > if (HYPERVISOR_sched_op(SCHEDOP_block, NULL) != 0) > > _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B81A0CCA481 for ; Mon, 13 Jun 2022 20:34:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234677AbiFMUd7 (ORCPT ); Mon, 13 Jun 2022 16:33:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36294 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231982AbiFMUdJ (ORCPT ); Mon, 13 Jun 2022 16:33:09 -0400 X-Greylist: delayed 1981 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Mon, 13 Jun 2022 12:23:08 PDT Received: from outgoing-stata.csail.mit.edu (outgoing-stata.csail.mit.edu [128.30.2.210]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 358485A5BC; Mon, 13 Jun 2022 12:23:07 -0700 (PDT) Received: from [77.23.249.31] (helo=srivatsab-a02.vmware.com) by outgoing-stata.csail.mit.edu with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1o0p7j-0002lx-0j; Mon, 13 Jun 2022 14:49:15 -0400 Subject: Re: [PATCH 29/36] cpuidle,xenpv: Make more PARAVIRT_XXL noinstr clean To: Peter Zijlstra Cc: rth@twiddle.net, ink@jurassic.park.msu.ru, mattst88@gmail.com, vgupta@kernel.org, linux@armlinux.org.uk, ulli.kroll@googlemail.com, linus.walleij@linaro.org, shawnguo@kernel.org, Sascha Hauer , kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, tony@atomide.com, khilman@kernel.org, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, bcain@quicinc.com, chenhuacai@kernel.org, kernel@xen0n.name, geert@linux-m68k.org, sammy@sammy.net, monstr@monstr.eu, tsbogend@alpha.franken.de, dinguyen@kernel.org, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com, James.Bottomley@HansenPartnership.com, deller@gmx.de, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, ysato@users.sourceforge.jp, dalias@libc.org, davem@davemloft.net, richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, acme@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, namhyung@kernel.org, jgross@suse.com, amakhalov@vmware.com, pv-drivers@vmware.com, boris.ostrovsky@oracle.com, chris@zankel.net, jcmvbkbc@gmail.com, rafael@kernel.org, lenb@kernel.org, pavel@ucw.cz, gregkh@linuxfoundation.org, mturquette@baylibre.com, sboyd@kernel.org, daniel.lezcano@linaro.org, lpieralisi@kernel.org, sudeep.holla@arm.com, agross@kernel.org, bjorn.andersson@linaro.org, anup@brainfault.org, thierry.reding@gmail.com, jonathanh@nvidia.com, jacob.jun.pan@linux.intel.com, Arnd Bergmann , yury.norov@gmail.com, andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk, rostedt@goodmis.org, pmladek@suse.com, senozhatsky@chromium.org, john.ogness@linutronix.de, paulmck@kernel.org, frederic@kernel.org, quic_neeraju@quicinc.com, josh@joshtriplett.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, joel@joelfernandes.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, jpoimboe@kernel.org, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-perf-users@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org, linux-xtensa@linux-xtensa.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arch@vger.kernel.org, rcu@vger.kernel.org References: <20220608142723.103523089@infradead.org> <20220608144517.759631860@infradead.org> From: "Srivatsa S. Bhat" Message-ID: <510b9b68-7d53-7d4d-5a05-37fbd199eb4b@csail.mit.edu> Date: Mon, 13 Jun 2022 20:48:49 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20220608144517.759631860@infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org On 6/8/22 4:27 PM, Peter Zijlstra wrote: > vmlinux.o: warning: objtool: acpi_idle_enter_s2idle+0xde: call to wbinvd() leaves .noinstr.text section > vmlinux.o: warning: objtool: default_idle+0x4: call to arch_safe_halt() leaves .noinstr.text section > vmlinux.o: warning: objtool: xen_safe_halt+0xa: call to HYPERVISOR_sched_op.constprop.0() leaves .noinstr.text section > > Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Srivatsa S. Bhat (VMware) Regards, Srivatsa VMware Photon OS > --- > arch/x86/include/asm/paravirt.h | 6 ++++-- > arch/x86/include/asm/special_insns.h | 4 ++-- > arch/x86/include/asm/xen/hypercall.h | 2 +- > arch/x86/kernel/paravirt.c | 14 ++++++++++++-- > arch/x86/xen/enlighten_pv.c | 2 +- > arch/x86/xen/irq.c | 2 +- > 6 files changed, 21 insertions(+), 9 deletions(-) > > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -168,7 +168,7 @@ static inline void __write_cr4(unsigned > PVOP_VCALL1(cpu.write_cr4, x); > } > > -static inline void arch_safe_halt(void) > +static __always_inline void arch_safe_halt(void) > { > PVOP_VCALL0(irq.safe_halt); > } > @@ -178,7 +178,9 @@ static inline void halt(void) > PVOP_VCALL0(irq.halt); > } > > -static inline void wbinvd(void) > +extern noinstr void pv_native_wbinvd(void); > + > +static __always_inline void wbinvd(void) > { > PVOP_ALT_VCALL0(cpu.wbinvd, "wbinvd", ALT_NOT(X86_FEATURE_XENPV)); > } > --- a/arch/x86/include/asm/special_insns.h > +++ b/arch/x86/include/asm/special_insns.h > @@ -115,7 +115,7 @@ static inline void wrpkru(u32 pkru) > } > #endif > > -static inline void native_wbinvd(void) > +static __always_inline void native_wbinvd(void) > { > asm volatile("wbinvd": : :"memory"); > } > @@ -179,7 +179,7 @@ static inline void __write_cr4(unsigned > native_write_cr4(x); > } > > -static inline void wbinvd(void) > +static __always_inline void wbinvd(void) > { > native_wbinvd(); > } > --- a/arch/x86/include/asm/xen/hypercall.h > +++ b/arch/x86/include/asm/xen/hypercall.h > @@ -382,7 +382,7 @@ MULTI_stack_switch(struct multicall_entr > } > #endif > > -static inline int > +static __always_inline int > HYPERVISOR_sched_op(int cmd, void *arg) > { > return _hypercall2(int, sched_op, cmd, arg); > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -233,6 +233,11 @@ static noinstr void pv_native_set_debugr > native_set_debugreg(regno, val); > } > > +noinstr void pv_native_wbinvd(void) > +{ > + native_wbinvd(); > +} > + > static noinstr void pv_native_irq_enable(void) > { > native_irq_enable(); > @@ -242,6 +247,11 @@ static noinstr void pv_native_irq_disabl > { > native_irq_disable(); > } > + > +static noinstr void pv_native_safe_halt(void) > +{ > + native_safe_halt(); > +} > #endif > > enum paravirt_lazy_mode paravirt_get_lazy_mode(void) > @@ -273,7 +283,7 @@ struct paravirt_patch_template pv_ops = > .cpu.read_cr0 = native_read_cr0, > .cpu.write_cr0 = native_write_cr0, > .cpu.write_cr4 = native_write_cr4, > - .cpu.wbinvd = native_wbinvd, > + .cpu.wbinvd = pv_native_wbinvd, > .cpu.read_msr = native_read_msr, > .cpu.write_msr = native_write_msr, > .cpu.read_msr_safe = native_read_msr_safe, > @@ -307,7 +317,7 @@ struct paravirt_patch_template pv_ops = > .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), > .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), > .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), > - .irq.safe_halt = native_safe_halt, > + .irq.safe_halt = pv_native_safe_halt, > .irq.halt = native_halt, > #endif /* CONFIG_PARAVIRT_XXL */ > > --- a/arch/x86/xen/enlighten_pv.c > +++ b/arch/x86/xen/enlighten_pv.c > @@ -1019,7 +1019,7 @@ static const typeof(pv_ops) xen_cpu_ops > > .write_cr4 = xen_write_cr4, > > - .wbinvd = native_wbinvd, > + .wbinvd = pv_native_wbinvd, > > .read_msr = xen_read_msr, > .write_msr = xen_write_msr, > --- a/arch/x86/xen/irq.c > +++ b/arch/x86/xen/irq.c > @@ -24,7 +24,7 @@ noinstr void xen_force_evtchn_callback(v > (void)HYPERVISOR_xen_version(0, NULL); > } > > -static void xen_safe_halt(void) > +static noinstr void xen_safe_halt(void) > { > /* Blocking includes an implicit local_irq_enable(). */ > if (HYPERVISOR_sched_op(SCHEDOP_block, NULL) != 0) > > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1D162C433EF for ; Tue, 14 Jun 2022 00:18:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:Cc:To:Subject:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=wEHkGUyKmSc8upDE2T1/bdUcXkDrFbjDLV0EwWcjKUs=; b=W+ichK5kL2Qk0kCvFdXzKCBAoM O/d7j5eNJOufrF2JzhxwK4uSIU0EKRzbRzN5x2fc6Xjxe2dvqV6FZ59RNRtFDB6z3jnsHLZW6PZbC gfGAXhccatwRr1z9jpQvm48f8vNyjjeRKKOO37MegcKPgT0hrj9etV17I1ma12ZpK2blKUQv9htGa ehVloyH9GpgghOelAKFdwLgJh5ADcDr3SUpIwV7qjzIGMhk8XwzDCFo+nR65VV5xKJVlzVm/4Exel lMwl3hpckk0y9c+H2hdjdYQIFrDez3mi/i76n4mNiSkuD1dy6RgdrYweKArN7HPrtBBC1lZ1nV4eA X/qcFurA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o0uGR-006QhW-4X; Tue, 14 Jun 2022 00:18:35 +0000 Received: from outgoing-stata.csail.mit.edu ([128.30.2.210]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o0p8k-005DSg-Ur; Mon, 13 Jun 2022 18:50:20 +0000 Received: from [77.23.249.31] (helo=srivatsab-a02.vmware.com) by outgoing-stata.csail.mit.edu with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1o0p7j-0002lx-0j; Mon, 13 Jun 2022 14:49:15 -0400 Subject: Re: [PATCH 29/36] cpuidle,xenpv: Make more PARAVIRT_XXL noinstr clean To: Peter Zijlstra Cc: rth@twiddle.net, ink@jurassic.park.msu.ru, mattst88@gmail.com, vgupta@kernel.org, linux@armlinux.org.uk, ulli.kroll@googlemail.com, linus.walleij@linaro.org, shawnguo@kernel.org, Sascha Hauer , kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, tony@atomide.com, khilman@kernel.org, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, bcain@quicinc.com, chenhuacai@kernel.org, kernel@xen0n.name, geert@linux-m68k.org, sammy@sammy.net, monstr@monstr.eu, tsbogend@alpha.franken.de, dinguyen@kernel.org, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com, James.Bottomley@HansenPartnership.com, deller@gmx.de, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, ysato@users.sourceforge.jp, dalias@libc.org, davem@davemloft.net, richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, acme@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, namhyung@kernel.org, jgross@suse.com, amakhalov@vmware.com, pv-drivers@vmware.com, boris.ostrovsky@oracle.com, chris@zankel.net, jcmvbkbc@gmail.com, rafael@kernel.org, lenb@kernel.org, pavel@ucw.cz, gregkh@linuxfoundation.org, mturquette@baylibre.com, sboyd@kernel.org, daniel.lezcano@linaro.org, lpieralisi@kernel.org, sudeep.holla@arm.com, agross@kernel.org, bjorn.andersson@linaro.org, anup@brainfault.org, thierry.reding@gmail.com, jonathanh@nvidia.com, jacob.jun.pan@linux.intel.com, Arnd Bergmann , yury.norov@gmail.com, andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk, rostedt@goodmis.org, pmladek@suse.com, senozhatsky@chromium.org, john.ogness@linutronix.de, paulmck@kernel.org, frederic@kernel.org, quic_neeraju@quicinc.com, josh@joshtriplett.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, joel@joelfernandes.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, jpoimboe@kernel.org, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-perf-users@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org, linux-xtensa@linux-xtensa.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arch@vger.kernel.org, rcu@vger.kernel.org References: <20220608142723.103523089@infradead.org> <20220608144517.759631860@infradead.org> From: "Srivatsa S. Bhat" Message-ID: <510b9b68-7d53-7d4d-5a05-37fbd199eb4b@csail.mit.edu> Date: Mon, 13 Jun 2022 20:48:49 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20220608144517.759631860@infradead.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220613_115019_116680_EBF84E40 X-CRM114-Status: GOOD ( 14.21 ) X-Mailman-Approved-At: Mon, 13 Jun 2022 17:18:23 -0700 X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On 6/8/22 4:27 PM, Peter Zijlstra wrote: > vmlinux.o: warning: objtool: acpi_idle_enter_s2idle+0xde: call to wbinvd() leaves .noinstr.text section > vmlinux.o: warning: objtool: default_idle+0x4: call to arch_safe_halt() leaves .noinstr.text section > vmlinux.o: warning: objtool: xen_safe_halt+0xa: call to HYPERVISOR_sched_op.constprop.0() leaves .noinstr.text section > > Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Srivatsa S. Bhat (VMware) Regards, Srivatsa VMware Photon OS > --- > arch/x86/include/asm/paravirt.h | 6 ++++-- > arch/x86/include/asm/special_insns.h | 4 ++-- > arch/x86/include/asm/xen/hypercall.h | 2 +- > arch/x86/kernel/paravirt.c | 14 ++++++++++++-- > arch/x86/xen/enlighten_pv.c | 2 +- > arch/x86/xen/irq.c | 2 +- > 6 files changed, 21 insertions(+), 9 deletions(-) > > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -168,7 +168,7 @@ static inline void __write_cr4(unsigned > PVOP_VCALL1(cpu.write_cr4, x); > } > > -static inline void arch_safe_halt(void) > +static __always_inline void arch_safe_halt(void) > { > PVOP_VCALL0(irq.safe_halt); > } > @@ -178,7 +178,9 @@ static inline void halt(void) > PVOP_VCALL0(irq.halt); > } > > -static inline void wbinvd(void) > +extern noinstr void pv_native_wbinvd(void); > + > +static __always_inline void wbinvd(void) > { > PVOP_ALT_VCALL0(cpu.wbinvd, "wbinvd", ALT_NOT(X86_FEATURE_XENPV)); > } > --- a/arch/x86/include/asm/special_insns.h > +++ b/arch/x86/include/asm/special_insns.h > @@ -115,7 +115,7 @@ static inline void wrpkru(u32 pkru) > } > #endif > > -static inline void native_wbinvd(void) > +static __always_inline void native_wbinvd(void) > { > asm volatile("wbinvd": : :"memory"); > } > @@ -179,7 +179,7 @@ static inline void __write_cr4(unsigned > native_write_cr4(x); > } > > -static inline void wbinvd(void) > +static __always_inline void wbinvd(void) > { > native_wbinvd(); > } > --- a/arch/x86/include/asm/xen/hypercall.h > +++ b/arch/x86/include/asm/xen/hypercall.h > @@ -382,7 +382,7 @@ MULTI_stack_switch(struct multicall_entr > } > #endif > > -static inline int > +static __always_inline int > HYPERVISOR_sched_op(int cmd, void *arg) > { > return _hypercall2(int, sched_op, cmd, arg); > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -233,6 +233,11 @@ static noinstr void pv_native_set_debugr > native_set_debugreg(regno, val); > } > > +noinstr void pv_native_wbinvd(void) > +{ > + native_wbinvd(); > +} > + > static noinstr void pv_native_irq_enable(void) > { > native_irq_enable(); > @@ -242,6 +247,11 @@ static noinstr void pv_native_irq_disabl > { > native_irq_disable(); > } > + > +static noinstr void pv_native_safe_halt(void) > +{ > + native_safe_halt(); > +} > #endif > > enum paravirt_lazy_mode paravirt_get_lazy_mode(void) > @@ -273,7 +283,7 @@ struct paravirt_patch_template pv_ops = > .cpu.read_cr0 = native_read_cr0, > .cpu.write_cr0 = native_write_cr0, > .cpu.write_cr4 = native_write_cr4, > - .cpu.wbinvd = native_wbinvd, > + .cpu.wbinvd = pv_native_wbinvd, > .cpu.read_msr = native_read_msr, > .cpu.write_msr = native_write_msr, > .cpu.read_msr_safe = native_read_msr_safe, > @@ -307,7 +317,7 @@ struct paravirt_patch_template pv_ops = > .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), > .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), > .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), > - .irq.safe_halt = native_safe_halt, > + .irq.safe_halt = pv_native_safe_halt, > .irq.halt = native_halt, > #endif /* CONFIG_PARAVIRT_XXL */ > > --- a/arch/x86/xen/enlighten_pv.c > +++ b/arch/x86/xen/enlighten_pv.c > @@ -1019,7 +1019,7 @@ static const typeof(pv_ops) xen_cpu_ops > > .write_cr4 = xen_write_cr4, > > - .wbinvd = native_wbinvd, > + .wbinvd = pv_native_wbinvd, > > .read_msr = xen_read_msr, > .write_msr = xen_write_msr, > --- a/arch/x86/xen/irq.c > +++ b/arch/x86/xen/irq.c > @@ -24,7 +24,7 @@ noinstr void xen_force_evtchn_callback(v > (void)HYPERVISOR_xen_version(0, NULL); > } > > -static void xen_safe_halt(void) > +static noinstr void xen_safe_halt(void) > { > /* Blocking includes an implicit local_irq_enable(). */ > if (HYPERVISOR_sched_op(SCHEDOP_block, NULL) != 0) > > _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.librecores.org (lists.librecores.org [88.198.125.70]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8A349CCA47E for ; Tue, 14 Jun 2022 00:48:19 +0000 (UTC) Received: from [172.31.1.100] (localhost.localdomain [127.0.0.1]) by mail.librecores.org (Postfix) with ESMTP id D83F324987; Tue, 14 Jun 2022 02:48:18 +0200 (CEST) Received: from outgoing-stata.csail.mit.edu (outgoing-stata.csail.mit.edu [128.30.2.210]) by mail.librecores.org (Postfix) with ESMTPS id 1962524973 for ; Mon, 13 Jun 2022 20:50:29 +0200 (CEST) Received: from [77.23.249.31] (helo=srivatsab-a02.vmware.com) by outgoing-stata.csail.mit.edu with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1o0p7j-0002lx-0j; Mon, 13 Jun 2022 14:49:15 -0400 Subject: Re: [PATCH 29/36] cpuidle, xenpv: Make more PARAVIRT_XXL noinstr clean To: Peter Zijlstra References: <20220608142723.103523089@infradead.org> <20220608144517.759631860@infradead.org> From: "Srivatsa S. Bhat" Message-ID: <510b9b68-7d53-7d4d-5a05-37fbd199eb4b@csail.mit.edu> Date: Mon, 13 Jun 2022 20:48:49 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20220608144517.759631860@infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Tue, 14 Jun 2022 02:48:12 +0200 X-BeenThere: openrisc@lists.librecores.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Discussion around the OpenRISC processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: juri.lelli@redhat.com, rafael@kernel.org, benh@kernel.crashing.org, linus.walleij@linaro.org, bsegall@google.com, guoren@kernel.org, pavel@ucw.cz, agordeev@linux.ibm.com, linux-clk@vger.kernel.org, linux-arch@vger.kernel.org, vincent.guittot@linaro.org, mpe@ellerman.id.au, chenhuacai@kernel.org, linux-acpi@vger.kernel.org, agross@kernel.org, linux-imx@nxp.com, catalin.marinas@arm.com, xen-devel@lists.xenproject.org, mattst88@gmail.com, borntraeger@linux.ibm.com, mturquette@baylibre.com, sammy@sammy.net, pmladek@suse.com, linux-pm@vger.kernel.org, jiangshanlai@gmail.com, Sascha Hauer , linux-um@lists.infradead.org, acme@kernel.org, tglx@linutronix.de, linux-omap@vger.kernel.org, dietmar.eggemann@arm.com, rth@twiddle.net, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, senozhatsky@chromium.org, svens@linux.ibm.com, jolsa@kernel.org, paulus@samba.org, mark.rutland@arm.com, linux-ia64@vger.kernel.org, dave.hansen@linux.intel.com, virtualization@lists.linux-foundation.org, James.Bottomley@HansenPartnership.com, jcmvbkbc@gmail.com, thierry.reding@gmail.com, kernel@xen0n.name, quic_neeraju@quicinc.com, linux-s390@vger.kernel.org, vschneid@redhat.com, john.ogness@linutronix.de, ysato@users.sourceforge.jp, linux-sh@vger.kernel.org, festevam@gmail.com, deller@gmx.de, daniel.lezcano@linaro.org, jonathanh@nvidia.com, mathieu.desnoyers@efficios.com, frederic@kernel.org, lenb@kernel.org, linux-xtensa@linux-xtensa.org, kernel@pengutronix.de, gor@linux.ibm.com, linux-arm-msm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-arm-kernel@lists.infradead.org, chris@zankel.net, sboyd@kernel.org, dinguyen@kernel.org, bristot@redhat.com, alexander.shishkin@linux.intel.com, lpieralisi@kernel.org, linux@rasmusvillemoes.dk, joel@joelfernandes.org, will@kernel.org, boris.ostrovsky@oracle.com, khilman@kernel.org, linux-csky@vger.kernel.org, pv-drivers@vmware.com, linux-snps-arc@lists.infradead.org, mgorman@suse.de, jacob.jun.pan@linux.intel.com, Arnd Bergmann , ulli.kroll@googlemail.com, vgupta@kernel.org, josh@joshtriplett.org, rostedt@goodmis.org, rcu@vger.kernel.org, bp@alien8.de, bcain@quicinc.com, tsbogend@alpha.franken.de, linux-parisc@vger.kernel.org, sudeep.holla@arm.com, shawnguo@kernel.org, davem@davemloft.net, dalias@libc.org, tony@atomide.com, amakhalov@vmware.com, bjorn.andersson@linaro.org, hpa@zytor.com, sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, anton.ivanov@cambridgegreys.com, jonas@southpole.se, yury.norov@gmail.com, richard@nod.at, x86@kernel.org, linux@armlinux.org.uk, mingo@redhat.com, aou@eecs.berkeley.edu, paulmck@kernel.org, hca@linux.ibm.com, openrisc@lists.librecores.org, paul.walmsley@sifive.com, linux-tegra@vger.kernel.org, namhyung@kernel.org, andriy.shevchenko@linux.intel.com, jpoimboe@kernel.org, jgross@suse.com, monstr@monstr.eu, linux-mips@vger.kernel.org, palmer@dabbelt.com, anup@brainfault.org, ink@jurassic.park.msu.ru, johannes@sipsolutions.net, linuxppc-dev@lists.ozlabs.org Errors-To: openrisc-bounces@lists.librecores.org Sender: "OpenRISC" On 6/8/22 4:27 PM, Peter Zijlstra wrote: > vmlinux.o: warning: objtool: acpi_idle_enter_s2idle+0xde: call to wbinvd() leaves .noinstr.text section > vmlinux.o: warning: objtool: default_idle+0x4: call to arch_safe_halt() leaves .noinstr.text section > vmlinux.o: warning: objtool: xen_safe_halt+0xa: call to HYPERVISOR_sched_op.constprop.0() leaves .noinstr.text section > > Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Srivatsa S. Bhat (VMware) Regards, Srivatsa VMware Photon OS > --- > arch/x86/include/asm/paravirt.h | 6 ++++-- > arch/x86/include/asm/special_insns.h | 4 ++-- > arch/x86/include/asm/xen/hypercall.h | 2 +- > arch/x86/kernel/paravirt.c | 14 ++++++++++++-- > arch/x86/xen/enlighten_pv.c | 2 +- > arch/x86/xen/irq.c | 2 +- > 6 files changed, 21 insertions(+), 9 deletions(-) > > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -168,7 +168,7 @@ static inline void __write_cr4(unsigned > PVOP_VCALL1(cpu.write_cr4, x); > } > > -static inline void arch_safe_halt(void) > +static __always_inline void arch_safe_halt(void) > { > PVOP_VCALL0(irq.safe_halt); > } > @@ -178,7 +178,9 @@ static inline void halt(void) > PVOP_VCALL0(irq.halt); > } > > -static inline void wbinvd(void) > +extern noinstr void pv_native_wbinvd(void); > + > +static __always_inline void wbinvd(void) > { > PVOP_ALT_VCALL0(cpu.wbinvd, "wbinvd", ALT_NOT(X86_FEATURE_XENPV)); > } > --- a/arch/x86/include/asm/special_insns.h > +++ b/arch/x86/include/asm/special_insns.h > @@ -115,7 +115,7 @@ static inline void wrpkru(u32 pkru) > } > #endif > > -static inline void native_wbinvd(void) > +static __always_inline void native_wbinvd(void) > { > asm volatile("wbinvd": : :"memory"); > } > @@ -179,7 +179,7 @@ static inline void __write_cr4(unsigned > native_write_cr4(x); > } > > -static inline void wbinvd(void) > +static __always_inline void wbinvd(void) > { > native_wbinvd(); > } > --- a/arch/x86/include/asm/xen/hypercall.h > +++ b/arch/x86/include/asm/xen/hypercall.h > @@ -382,7 +382,7 @@ MULTI_stack_switch(struct multicall_entr > } > #endif > > -static inline int > +static __always_inline int > HYPERVISOR_sched_op(int cmd, void *arg) > { > return _hypercall2(int, sched_op, cmd, arg); > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -233,6 +233,11 @@ static noinstr void pv_native_set_debugr > native_set_debugreg(regno, val); > } > > +noinstr void pv_native_wbinvd(void) > +{ > + native_wbinvd(); > +} > + > static noinstr void pv_native_irq_enable(void) > { > native_irq_enable(); > @@ -242,6 +247,11 @@ static noinstr void pv_native_irq_disabl > { > native_irq_disable(); > } > + > +static noinstr void pv_native_safe_halt(void) > +{ > + native_safe_halt(); > +} > #endif > > enum paravirt_lazy_mode paravirt_get_lazy_mode(void) > @@ -273,7 +283,7 @@ struct paravirt_patch_template pv_ops = > .cpu.read_cr0 = native_read_cr0, > .cpu.write_cr0 = native_write_cr0, > .cpu.write_cr4 = native_write_cr4, > - .cpu.wbinvd = native_wbinvd, > + .cpu.wbinvd = pv_native_wbinvd, > .cpu.read_msr = native_read_msr, > .cpu.write_msr = native_write_msr, > .cpu.read_msr_safe = native_read_msr_safe, > @@ -307,7 +317,7 @@ struct paravirt_patch_template pv_ops = > .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), > .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), > .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), > - .irq.safe_halt = native_safe_halt, > + .irq.safe_halt = pv_native_safe_halt, > .irq.halt = native_halt, > #endif /* CONFIG_PARAVIRT_XXL */ > > --- a/arch/x86/xen/enlighten_pv.c > +++ b/arch/x86/xen/enlighten_pv.c > @@ -1019,7 +1019,7 @@ static const typeof(pv_ops) xen_cpu_ops > > .write_cr4 = xen_write_cr4, > > - .wbinvd = native_wbinvd, > + .wbinvd = pv_native_wbinvd, > > .read_msr = xen_read_msr, > .write_msr = xen_write_msr, > --- a/arch/x86/xen/irq.c > +++ b/arch/x86/xen/irq.c > @@ -24,7 +24,7 @@ noinstr void xen_force_evtchn_callback(v > (void)HYPERVISOR_xen_version(0, NULL); > } > > -static void xen_safe_halt(void) > +static noinstr void xen_safe_halt(void) > { > /* Blocking includes an implicit local_irq_enable(). */ > if (HYPERVISOR_sched_op(SCHEDOP_block, NULL) != 0) > > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A59B2C43334 for ; Tue, 14 Jun 2022 22:02:07 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4LN2Tn5WfPz3bsB for ; Wed, 15 Jun 2022 08:02:05 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=csail.mit.edu (client-ip=128.30.2.210; helo=outgoing-stata.csail.mit.edu; envelope-from=srivatsa@csail.mit.edu; receiver=) X-Greylist: delayed 1964 seconds by postgrey-1.36 at boromir; Tue, 14 Jun 2022 05:23:11 AEST Received: from outgoing-stata.csail.mit.edu (outgoing-stata.csail.mit.edu [128.30.2.210]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA256 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4LMM0v3D8Kz2ywl for ; Tue, 14 Jun 2022 05:23:09 +1000 (AEST) Received: from [77.23.249.31] (helo=srivatsab-a02.vmware.com) by outgoing-stata.csail.mit.edu with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1o0p7j-0002lx-0j; Mon, 13 Jun 2022 14:49:15 -0400 Subject: Re: [PATCH 29/36] cpuidle,xenpv: Make more PARAVIRT_XXL noinstr clean To: Peter Zijlstra References: <20220608142723.103523089@infradead.org> <20220608144517.759631860@infradead.org> From: "Srivatsa S. Bhat" Message-ID: <510b9b68-7d53-7d4d-5a05-37fbd199eb4b@csail.mit.edu> Date: Mon, 13 Jun 2022 20:48:49 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <20220608144517.759631860@infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Mailman-Approved-At: Wed, 15 Jun 2022 08:01:46 +1000 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: juri.lelli@redhat.com, rafael@kernel.org, linus.walleij@linaro.org, bsegall@google.com, guoren@kernel.org, pavel@ucw.cz, agordeev@linux.ibm.com, linux-clk@vger.kernel.org, linux-arch@vger.kernel.org, vincent.guittot@linaro.org, chenhuacai@kernel.org, linux-acpi@vger.kernel.org, agross@kernel.org, geert@linux-m68k.org, linux-imx@nxp.com, catalin.marinas@arm.com, xen-devel@lists.xenproject.org, mattst88@gmail.com, borntraeger@linux.ibm.com, mturquette@baylibre.com, sammy@sammy.net, pmladek@suse.com, linux-pm@vger.kernel.org, jiangshanlai@gmail.com, Sascha Hauer , linux-um@lists.infradead.org, acme@kernel.org, tglx@linutronix.de, linux-omap@vger.kernel.org, dietmar.eggemann@arm.com, rth@twiddle.net, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, senozhatsky@chromium.org, svens@linux.ibm.com, jolsa@kernel.org, paulus@samba.org, mark.rutland@arm.com, linux-ia64@vger.kernel.org, dave.hansen@linux.intel.com, virtualiza tion@lists.linux-foundation.org, James.Bottomley@HansenPartnership.com, jcmvbkbc@gmail.com, thierry.reding@gmail.com, kernel@xen0n.name, quic_neeraju@quicinc.com, linux-s390@vger.kernel.org, vschneid@redhat.com, john.ogness@linutronix.de, ysato@users.sourceforge.jp, linux-sh@vger.kernel.org, festevam@gmail.com, deller@gmx.de, daniel.lezcano@linaro.org, jonathanh@nvidia.com, mathieu.desnoyers@efficios.com, frederic@kernel.org, lenb@kernel.org, linux-xtensa@linux-xtensa.org, kernel@pengutronix.de, gor@linux.ibm.com, linux-arm-msm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-m68k@lists.linux-m68k.org, shorne@gmail.com, linux-arm-kernel@lists.infradead.org, chris@zankel.net, sboyd@kernel.org, dinguyen@kernel.org, bristot@redhat.com, alexander.shishkin@linux.intel.com, lpieralisi@kernel.org, linux@rasmusvillemoes.dk, joel@joelfernandes.org, will@kernel.org, boris.ostrovsky@oracle.com, khilman@kernel.org, linux-csky@vger.kernel.org, pv-drivers@vmware.com, linux-snps-arc@lists.infra dead.org, mgorman@suse.de, jacob.jun.pan@linux.intel. com, Arnd Bergmann , ulli.kroll@googlemail.com, vgupta@kernel.org, josh@joshtriplett.org, rostedt@goodmis.org, rcu@vger.kernel.org, bp@alien8.de, bcain@quicinc.com, tsbogend@alpha.franken.de, linux-parisc@vger.kernel.org, sudeep.holla@arm.com, shawnguo@kernel.org, davem@davemloft.net, dalias@libc.org, tony@atomide.com, amakhalov@vmware.com, bjorn.andersson@linaro.org, hpa@zytor.com, sparclinux@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-riscv@lists.infradead.org, anton.ivanov@cambridgegreys.com, jonas@southpole.se, yury.norov@gmail.com, richard@nod.at, x86@kernel.org, linux@armlinux.org.uk, mingo@redhat.com, aou@eecs.berkeley.edu, paulmck@kernel.org, hca@linux.ibm.com, stefan.kristiansson@saunalahti.fi, openrisc@lists.librecores.org, paul.walmsley@sifive.com, linux-tegra@vger.kernel.org, namhyung@kernel.org, andriy.shevchenko@linux.intel.com, jpoimboe@kernel.org, jgross@suse.com, monstr@monstr.eu, linux-mips@vger.kernel.org, palmer@dabbelt.com, anup@brainfaul t.org, ink@jurassic.park.msu.ru, johannes@sipsolutions.net, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 6/8/22 4:27 PM, Peter Zijlstra wrote: > vmlinux.o: warning: objtool: acpi_idle_enter_s2idle+0xde: call to wbinvd() leaves .noinstr.text section > vmlinux.o: warning: objtool: default_idle+0x4: call to arch_safe_halt() leaves .noinstr.text section > vmlinux.o: warning: objtool: xen_safe_halt+0xa: call to HYPERVISOR_sched_op.constprop.0() leaves .noinstr.text section > > Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Srivatsa S. Bhat (VMware) Regards, Srivatsa VMware Photon OS > --- > arch/x86/include/asm/paravirt.h | 6 ++++-- > arch/x86/include/asm/special_insns.h | 4 ++-- > arch/x86/include/asm/xen/hypercall.h | 2 +- > arch/x86/kernel/paravirt.c | 14 ++++++++++++-- > arch/x86/xen/enlighten_pv.c | 2 +- > arch/x86/xen/irq.c | 2 +- > 6 files changed, 21 insertions(+), 9 deletions(-) > > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -168,7 +168,7 @@ static inline void __write_cr4(unsigned > PVOP_VCALL1(cpu.write_cr4, x); > } > > -static inline void arch_safe_halt(void) > +static __always_inline void arch_safe_halt(void) > { > PVOP_VCALL0(irq.safe_halt); > } > @@ -178,7 +178,9 @@ static inline void halt(void) > PVOP_VCALL0(irq.halt); > } > > -static inline void wbinvd(void) > +extern noinstr void pv_native_wbinvd(void); > + > +static __always_inline void wbinvd(void) > { > PVOP_ALT_VCALL0(cpu.wbinvd, "wbinvd", ALT_NOT(X86_FEATURE_XENPV)); > } > --- a/arch/x86/include/asm/special_insns.h > +++ b/arch/x86/include/asm/special_insns.h > @@ -115,7 +115,7 @@ static inline void wrpkru(u32 pkru) > } > #endif > > -static inline void native_wbinvd(void) > +static __always_inline void native_wbinvd(void) > { > asm volatile("wbinvd": : :"memory"); > } > @@ -179,7 +179,7 @@ static inline void __write_cr4(unsigned > native_write_cr4(x); > } > > -static inline void wbinvd(void) > +static __always_inline void wbinvd(void) > { > native_wbinvd(); > } > --- a/arch/x86/include/asm/xen/hypercall.h > +++ b/arch/x86/include/asm/xen/hypercall.h > @@ -382,7 +382,7 @@ MULTI_stack_switch(struct multicall_entr > } > #endif > > -static inline int > +static __always_inline int > HYPERVISOR_sched_op(int cmd, void *arg) > { > return _hypercall2(int, sched_op, cmd, arg); > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -233,6 +233,11 @@ static noinstr void pv_native_set_debugr > native_set_debugreg(regno, val); > } > > +noinstr void pv_native_wbinvd(void) > +{ > + native_wbinvd(); > +} > + > static noinstr void pv_native_irq_enable(void) > { > native_irq_enable(); > @@ -242,6 +247,11 @@ static noinstr void pv_native_irq_disabl > { > native_irq_disable(); > } > + > +static noinstr void pv_native_safe_halt(void) > +{ > + native_safe_halt(); > +} > #endif > > enum paravirt_lazy_mode paravirt_get_lazy_mode(void) > @@ -273,7 +283,7 @@ struct paravirt_patch_template pv_ops = > .cpu.read_cr0 = native_read_cr0, > .cpu.write_cr0 = native_write_cr0, > .cpu.write_cr4 = native_write_cr4, > - .cpu.wbinvd = native_wbinvd, > + .cpu.wbinvd = pv_native_wbinvd, > .cpu.read_msr = native_read_msr, > .cpu.write_msr = native_write_msr, > .cpu.read_msr_safe = native_read_msr_safe, > @@ -307,7 +317,7 @@ struct paravirt_patch_template pv_ops = > .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), > .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), > .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), > - .irq.safe_halt = native_safe_halt, > + .irq.safe_halt = pv_native_safe_halt, > .irq.halt = native_halt, > #endif /* CONFIG_PARAVIRT_XXL */ > > --- a/arch/x86/xen/enlighten_pv.c > +++ b/arch/x86/xen/enlighten_pv.c > @@ -1019,7 +1019,7 @@ static const typeof(pv_ops) xen_cpu_ops > > .write_cr4 = xen_write_cr4, > > - .wbinvd = native_wbinvd, > + .wbinvd = pv_native_wbinvd, > > .read_msr = xen_read_msr, > .write_msr = xen_write_msr, > --- a/arch/x86/xen/irq.c > +++ b/arch/x86/xen/irq.c > @@ -24,7 +24,7 @@ noinstr void xen_force_evtchn_callback(v > (void)HYPERVISOR_xen_version(0, NULL); > } > > -static void xen_safe_halt(void) > +static noinstr void xen_safe_halt(void) > { > /* Blocking includes an implicit local_irq_enable(). */ > if (HYPERVISOR_sched_op(SCHEDOP_block, NULL) != 0) > > From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Srivatsa S. Bhat" Date: Mon, 13 Jun 2022 18:48:49 +0000 Subject: Re: [PATCH 29/36] cpuidle,xenpv: Make more PARAVIRT_XXL noinstr clean Message-Id: <510b9b68-7d53-7d4d-5a05-37fbd199eb4b@csail.mit.edu> List-Id: References: <20220608142723.103523089@infradead.org> <20220608144517.759631860@infradead.org> In-Reply-To: <20220608144517.759631860@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Peter Zijlstra Cc: rth@twiddle.net, ink@jurassic.park.msu.ru, mattst88@gmail.com, vgupta@kernel.org, linux@armlinux.org.uk, ulli.kroll@googlemail.com, linus.walleij@linaro.org, shawnguo@kernel.org, Sascha Hauer , kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, tony@atomide.com, khilman@kernel.org, catalin.marinas@arm.com, will@kernel.org, guoren@kernel.org, bcain@quicinc.com, chenhuacai@kernel.org, kernel@xen0n.name, geert@linux-m68k.org, sammy@sammy.net, monstr@monstr.eu, tsbogend@alpha.franken.de, dinguyen@kernel.org, jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com, James.Bottomley@HansenPartnership.com, deller@gmx.de, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, ysato@users.sourceforge.jp, dalias@libc.org, davem@davemloft.net, richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, acme@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, namhyung@kernel.org, jgross@suse.com, amakhalov@vmware.com, pv-drivers@vmware.com, boris.ostrovsky@oracle.com, chris@zankel.net, jcmvbkbc@gmail.com, rafael@kernel.org, lenb@kernel.org, pavel@ucw.cz, gregkh@linuxfoundation.org, mturquette@baylibre.com, sboyd@kernel.org, daniel.lezcano@linaro.org, lpieralisi@kernel.org, sudeep.holla@arm.com, agross@kernel.org, bjorn.andersson@linaro.org, anup@brainfault.org, thierry.reding@gmail.com, jonathanh@nvidia.com, jacob.jun.pan@linux.intel.com, Arnd Bergmann , yury.norov@gmail.com, andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk, rostedt@goodmis.org, pmladek@suse.com, senozhatsky@chromium.org, john.ogness@linutronix.de, paulmck@kernel.org, frederic@kernel.org, quic_neeraju@quicinc.com, josh@joshtriplett.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com, joel@joelfernandes.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, jpoimboe@kernel.org, linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, openrisc@lists.librecores.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, linux-perf-users@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org, linux-xtensa@linux-xtensa.org, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arch@vger.kernel.org, rcu@vger.kernel.org On 6/8/22 4:27 PM, Peter Zijlstra wrote: > vmlinux.o: warning: objtool: acpi_idle_enter_s2idle+0xde: call to wbinvd() leaves .noinstr.text section > vmlinux.o: warning: objtool: default_idle+0x4: call to arch_safe_halt() leaves .noinstr.text section > vmlinux.o: warning: objtool: xen_safe_halt+0xa: call to HYPERVISOR_sched_op.constprop.0() leaves .noinstr.text section > > Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Srivatsa S. Bhat (VMware) Regards, Srivatsa VMware Photon OS > --- > arch/x86/include/asm/paravirt.h | 6 ++++-- > arch/x86/include/asm/special_insns.h | 4 ++-- > arch/x86/include/asm/xen/hypercall.h | 2 +- > arch/x86/kernel/paravirt.c | 14 ++++++++++++-- > arch/x86/xen/enlighten_pv.c | 2 +- > arch/x86/xen/irq.c | 2 +- > 6 files changed, 21 insertions(+), 9 deletions(-) > > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -168,7 +168,7 @@ static inline void __write_cr4(unsigned > PVOP_VCALL1(cpu.write_cr4, x); > } > > -static inline void arch_safe_halt(void) > +static __always_inline void arch_safe_halt(void) > { > PVOP_VCALL0(irq.safe_halt); > } > @@ -178,7 +178,9 @@ static inline void halt(void) > PVOP_VCALL0(irq.halt); > } > > -static inline void wbinvd(void) > +extern noinstr void pv_native_wbinvd(void); > + > +static __always_inline void wbinvd(void) > { > PVOP_ALT_VCALL0(cpu.wbinvd, "wbinvd", ALT_NOT(X86_FEATURE_XENPV)); > } > --- a/arch/x86/include/asm/special_insns.h > +++ b/arch/x86/include/asm/special_insns.h > @@ -115,7 +115,7 @@ static inline void wrpkru(u32 pkru) > } > #endif > > -static inline void native_wbinvd(void) > +static __always_inline void native_wbinvd(void) > { > asm volatile("wbinvd": : :"memory"); > } > @@ -179,7 +179,7 @@ static inline void __write_cr4(unsigned > native_write_cr4(x); > } > > -static inline void wbinvd(void) > +static __always_inline void wbinvd(void) > { > native_wbinvd(); > } > --- a/arch/x86/include/asm/xen/hypercall.h > +++ b/arch/x86/include/asm/xen/hypercall.h > @@ -382,7 +382,7 @@ MULTI_stack_switch(struct multicall_entr > } > #endif > > -static inline int > +static __always_inline int > HYPERVISOR_sched_op(int cmd, void *arg) > { > return _hypercall2(int, sched_op, cmd, arg); > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -233,6 +233,11 @@ static noinstr void pv_native_set_debugr > native_set_debugreg(regno, val); > } > > +noinstr void pv_native_wbinvd(void) > +{ > + native_wbinvd(); > +} > + > static noinstr void pv_native_irq_enable(void) > { > native_irq_enable(); > @@ -242,6 +247,11 @@ static noinstr void pv_native_irq_disabl > { > native_irq_disable(); > } > + > +static noinstr void pv_native_safe_halt(void) > +{ > + native_safe_halt(); > +} > #endif > > enum paravirt_lazy_mode paravirt_get_lazy_mode(void) > @@ -273,7 +283,7 @@ struct paravirt_patch_template pv_ops > .cpu.read_cr0 = native_read_cr0, > .cpu.write_cr0 = native_write_cr0, > .cpu.write_cr4 = native_write_cr4, > - .cpu.wbinvd = native_wbinvd, > + .cpu.wbinvd = pv_native_wbinvd, > .cpu.read_msr = native_read_msr, > .cpu.write_msr = native_write_msr, > .cpu.read_msr_safe = native_read_msr_safe, > @@ -307,7 +317,7 @@ struct paravirt_patch_template pv_ops > .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), > .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), > .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), > - .irq.safe_halt = native_safe_halt, > + .irq.safe_halt = pv_native_safe_halt, > .irq.halt = native_halt, > #endif /* CONFIG_PARAVIRT_XXL */ > > --- a/arch/x86/xen/enlighten_pv.c > +++ b/arch/x86/xen/enlighten_pv.c > @@ -1019,7 +1019,7 @@ static const typeof(pv_ops) xen_cpu_ops > > .write_cr4 = xen_write_cr4, > > - .wbinvd = native_wbinvd, > + .wbinvd = pv_native_wbinvd, > > .read_msr = xen_read_msr, > .write_msr = xen_write_msr, > --- a/arch/x86/xen/irq.c > +++ b/arch/x86/xen/irq.c > @@ -24,7 +24,7 @@ noinstr void xen_force_evtchn_callback(v > (void)HYPERVISOR_xen_version(0, NULL); > } > > -static void xen_safe_halt(void) > +static noinstr void xen_safe_halt(void) > { > /* Blocking includes an implicit local_irq_enable(). */ > if (HYPERVISOR_sched_op(SCHEDOP_block, NULL) != 0) > > From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Srivatsa S. Bhat" Subject: Re: [PATCH 29/36] cpuidle, xenpv: Make more PARAVIRT_XXL noinstr clean Date: Mon, 13 Jun 2022 20:48:49 +0200 Message-ID: <510b9b68-7d53-7d4d-5a05-37fbd199eb4b@csail.mit.edu> References: <20220608142723.103523089@infradead.org> <20220608144517.759631860@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20220608144517.759631860@infradead.org> Content-Language: en-US List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" To: Peter Zijlstra Cc: juri.lelli@redhat.com, rafael@kernel.org, benh@kernel.crashing.org, linus.walleij@linaro.org, bsegall@google.com, guoren@kernel.org, pavel@ucw.cz, agordeev@linux.ibm.com, linux-clk@vger.kernel.org, linux-arch@vger.kernel.org, vincent.guittot@linaro.org, mpe@ellerman.id.au, chenhuacai@kernel.org, linux-acpi@vger.kernel.org, agross@kernel.org, geert@linux-m68k.org, linux-imx@nxp.com, catalin.marinas@arm.com, xen-devel@lists.xenproject.org, mattst88@gmail.com, mturquette@baylibre.com, sammy@sammy.net, pmladek@suse.com, linux-pm@vger.kernel.org, jiangshanlai@gmail.com, Sascha Hauer , linux-um@lists.infradead.org, acme@kernel.org, tglx@linutronix.de, linux-omap@vger.kernel.org, dietmar.eggemann@arm.com, rth@twiddle.net, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, senozhatsky@chromium.org, svens@linux.ibm.c On 6/8/22 4:27 PM, Peter Zijlstra wrote: > vmlinux.o: warning: objtool: acpi_idle_enter_s2idle+0xde: call to wbinvd() leaves .noinstr.text section > vmlinux.o: warning: objtool: default_idle+0x4: call to arch_safe_halt() leaves .noinstr.text section > vmlinux.o: warning: objtool: xen_safe_halt+0xa: call to HYPERVISOR_sched_op.constprop.0() leaves .noinstr.text section > > Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Srivatsa S. Bhat (VMware) Regards, Srivatsa VMware Photon OS > --- > arch/x86/include/asm/paravirt.h | 6 ++++-- > arch/x86/include/asm/special_insns.h | 4 ++-- > arch/x86/include/asm/xen/hypercall.h | 2 +- > arch/x86/kernel/paravirt.c | 14 ++++++++++++-- > arch/x86/xen/enlighten_pv.c | 2 +- > arch/x86/xen/irq.c | 2 +- > 6 files changed, 21 insertions(+), 9 deletions(-) > > --- a/arch/x86/include/asm/paravirt.h > +++ b/arch/x86/include/asm/paravirt.h > @@ -168,7 +168,7 @@ static inline void __write_cr4(unsigned > PVOP_VCALL1(cpu.write_cr4, x); > } > > -static inline void arch_safe_halt(void) > +static __always_inline void arch_safe_halt(void) > { > PVOP_VCALL0(irq.safe_halt); > } > @@ -178,7 +178,9 @@ static inline void halt(void) > PVOP_VCALL0(irq.halt); > } > > -static inline void wbinvd(void) > +extern noinstr void pv_native_wbinvd(void); > + > +static __always_inline void wbinvd(void) > { > PVOP_ALT_VCALL0(cpu.wbinvd, "wbinvd", ALT_NOT(X86_FEATURE_XENPV)); > } > --- a/arch/x86/include/asm/special_insns.h > +++ b/arch/x86/include/asm/special_insns.h > @@ -115,7 +115,7 @@ static inline void wrpkru(u32 pkru) > } > #endif > > -static inline void native_wbinvd(void) > +static __always_inline void native_wbinvd(void) > { > asm volatile("wbinvd": : :"memory"); > } > @@ -179,7 +179,7 @@ static inline void __write_cr4(unsigned > native_write_cr4(x); > } > > -static inline void wbinvd(void) > +static __always_inline void wbinvd(void) > { > native_wbinvd(); > } > --- a/arch/x86/include/asm/xen/hypercall.h > +++ b/arch/x86/include/asm/xen/hypercall.h > @@ -382,7 +382,7 @@ MULTI_stack_switch(struct multicall_entr > } > #endif > > -static inline int > +static __always_inline int > HYPERVISOR_sched_op(int cmd, void *arg) > { > return _hypercall2(int, sched_op, cmd, arg); > --- a/arch/x86/kernel/paravirt.c > +++ b/arch/x86/kernel/paravirt.c > @@ -233,6 +233,11 @@ static noinstr void pv_native_set_debugr > native_set_debugreg(regno, val); > } > > +noinstr void pv_native_wbinvd(void) > +{ > + native_wbinvd(); > +} > + > static noinstr void pv_native_irq_enable(void) > { > native_irq_enable(); > @@ -242,6 +247,11 @@ static noinstr void pv_native_irq_disabl > { > native_irq_disable(); > } > + > +static noinstr void pv_native_safe_halt(void) > +{ > + native_safe_halt(); > +} > #endif > > enum paravirt_lazy_mode paravirt_get_lazy_mode(void) > @@ -273,7 +283,7 @@ struct paravirt_patch_template pv_ops = > .cpu.read_cr0 = native_read_cr0, > .cpu.write_cr0 = native_write_cr0, > .cpu.write_cr4 = native_write_cr4, > - .cpu.wbinvd = native_wbinvd, > + .cpu.wbinvd = pv_native_wbinvd, > .cpu.read_msr = native_read_msr, > .cpu.write_msr = native_write_msr, > .cpu.read_msr_safe = native_read_msr_safe, > @@ -307,7 +317,7 @@ struct paravirt_patch_template pv_ops = > .irq.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl), > .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), > .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), > - .irq.safe_halt = native_safe_halt, > + .irq.safe_halt = pv_native_safe_halt, > .irq.halt = native_halt, > #endif /* CONFIG_PARAVIRT_XXL */ > > --- a/arch/x86/xen/enlighten_pv.c > +++ b/arch/x86/xen/enlighten_pv.c > @@ -1019,7 +1019,7 @@ static const typeof(pv_ops) xen_cpu_ops > > .write_cr4 = xen_write_cr4, > > - .wbinvd = native_wbinvd, > + .wbinvd = pv_native_wbinvd, > > .read_msr = xen_read_msr, > .write_msr = xen_write_msr, > --- a/arch/x86/xen/irq.c > +++ b/arch/x86/xen/irq.c > @@ -24,7 +24,7 @@ noinstr void xen_force_evtchn_callback(v > (void)HYPERVISOR_xen_version(0, NULL); > } > > -static void xen_safe_halt(void) > +static noinstr void xen_safe_halt(void) > { > /* Blocking includes an implicit local_irq_enable(). */ > if (HYPERVISOR_sched_op(SCHEDOP_block, NULL) != 0) > >