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 X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F2A9C433E8 for ; Tue, 14 Jul 2020 18:53:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E4567207F5 for ; Tue, 14 Jul 2020 18:53:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594752798; bh=mSN9oBUWcUYye87703cbgBNrreVEIMovySJxJEBFV40=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=DJVz0XMOhAiZDKlXttkPz64VF6M6d0TDXuT9b0Uvcrg2H+3UQVA9VB4E1tsG0cOlD WZPCEyq+Yb2VGM0NsM9fBWRa803pxeZ/WFc6Nrfg66cJQn+XXWvweawNMaYgn9mtTL LRWbBXNIkxSzn3uNVtq4axCP89U51u6DnlWCGQAE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730606AbgGNSxS (ORCPT ); Tue, 14 Jul 2020 14:53:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:50234 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730595AbgGNSxO (ORCPT ); Tue, 14 Jul 2020 14:53:14 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 21AB222CAD; Tue, 14 Jul 2020 18:53:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594752793; bh=mSN9oBUWcUYye87703cbgBNrreVEIMovySJxJEBFV40=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fkBiSEXyIf+KfpdQ0bEBzyvPubJPj9Onp+OtRazXo1STdo8hnGUnoL0qUIcSHmi1Y jxmbxmFZ3ga9J4kLJ0gIVEFQJf5FWewTjzk4AoZNVISyuBzTLzj7/9HMa9pkePWcP1 2QO/0SRfrTAB1rPwhq2Qhx3a8lHu78ZMzG48qcJg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alexandru Elisei , Marc Zyngier , James Morse Subject: [PATCH 5.4 082/109] KVM: arm64: Annotate hyp NMI-related functions as __always_inline Date: Tue, 14 Jul 2020 20:44:25 +0200 Message-Id: <20200714184109.478042495@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200714184105.507384017@linuxfoundation.org> References: <20200714184105.507384017@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Alexandru Elisei commit 7733306bd593c737c63110175da6c35b4b8bb32c upstream. The "inline" keyword is a hint for the compiler to inline a function. The functions system_uses_irq_prio_masking() and gic_write_pmr() are used by the code running at EL2 on a non-VHE system, so mark them as __always_inline to make sure they'll always be part of the .hyp.text section. This fixes the following splat when trying to run a VM: [ 47.625273] Kernel panic - not syncing: HYP panic: [ 47.625273] PS:a00003c9 PC:0000ca0b42049fc4 ESR:86000006 [ 47.625273] FAR:0000ca0b42049fc4 HPFAR:0000000010001000 PAR:0000000000000000 [ 47.625273] VCPU:0000000000000000 [ 47.647261] CPU: 1 PID: 217 Comm: kvm-vcpu-0 Not tainted 5.8.0-rc1-ARCH+ #61 [ 47.654508] Hardware name: Globalscale Marvell ESPRESSOBin Board (DT) [ 47.661139] Call trace: [ 47.663659] dump_backtrace+0x0/0x1cc [ 47.667413] show_stack+0x18/0x24 [ 47.670822] dump_stack+0xb8/0x108 [ 47.674312] panic+0x124/0x2f4 [ 47.677446] panic+0x0/0x2f4 [ 47.680407] SMP: stopping secondary CPUs [ 47.684439] Kernel Offset: disabled [ 47.688018] CPU features: 0x240402,20002008 [ 47.692318] Memory Limit: none [ 47.695465] ---[ end Kernel panic - not syncing: HYP panic: [ 47.695465] PS:a00003c9 PC:0000ca0b42049fc4 ESR:86000006 [ 47.695465] FAR:0000ca0b42049fc4 HPFAR:0000000010001000 PAR:0000000000000000 [ 47.695465] VCPU:0000000000000000 ]--- The instruction abort was caused by the code running at EL2 trying to fetch an instruction which wasn't mapped in the EL2 translation tables. Using objdump showed the two functions as separate symbols in the .text section. Fixes: 85738e05dc38 ("arm64: kvm: Unmask PMR before entering guest") Cc: stable@vger.kernel.org Signed-off-by: Alexandru Elisei Signed-off-by: Marc Zyngier Acked-by: James Morse Link: https://lore.kernel.org/r/20200618171254.1596055-1-alexandru.elisei@arm.com Signed-off-by: Greg Kroah-Hartman --- arch/arm64/include/asm/arch_gicv3.h | 2 +- arch/arm64/include/asm/cpufeature.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/arch/arm64/include/asm/arch_gicv3.h +++ b/arch/arm64/include/asm/arch_gicv3.h @@ -109,7 +109,7 @@ static inline u32 gic_read_pmr(void) return read_sysreg_s(SYS_ICC_PMR_EL1); } -static inline void gic_write_pmr(u32 val) +static __always_inline void gic_write_pmr(u32 val) { write_sysreg_s(val, SYS_ICC_PMR_EL1); } --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -601,7 +601,7 @@ static inline bool system_supports_gener cpus_have_const_cap(ARM64_HAS_GENERIC_AUTH_IMP_DEF)); } -static inline bool system_uses_irq_prio_masking(void) +static __always_inline bool system_uses_irq_prio_masking(void) { return IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI) && cpus_have_const_cap(ARM64_HAS_IRQ_PRIO_MASKING);