From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from foss.arm.com ([217.140.101.70]:41042 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752628AbdJTLeb (ORCPT ); Fri, 20 Oct 2017 07:34:31 -0400 From: Julien Thierry To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu Cc: marc.zyngier@arm.com, christoffer.dall@linaro.org, Julien Thierry , Catalin Marinas , Will Deacon , Russell King , Subject: [RESEND PATCH 2/2] arm/arm64: kvm: Disable branch profiling in HYP code Date: Fri, 20 Oct 2017 12:34:17 +0100 Message-Id: <1508499257-10014-3-git-send-email-julien.thierry@arm.com> In-Reply-To: <1508499257-10014-1-git-send-email-julien.thierry@arm.com> References: <1508499257-10014-1-git-send-email-julien.thierry@arm.com> Sender: stable-owner@vger.kernel.org List-ID: When HYP code runs into branch profiling code, it attempts to jump to unmapped memory, causing a HYP Panic. Disable the branch profiling for code designed to run at HYP mode. Signed-off-by: Julien Thierry Acked-by: Marc Zyngier Cc: Christoffer Dall Cc: Catalin Marinas Cc: Will Deacon Cc: Russell King Cc: --- arch/arm/kvm/hyp/Makefile | 2 +- arch/arm64/kvm/hyp/Makefile | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/kvm/hyp/Makefile b/arch/arm/kvm/hyp/Makefile index 8679405..92eab1d 100644 --- a/arch/arm/kvm/hyp/Makefile +++ b/arch/arm/kvm/hyp/Makefile @@ -2,7 +2,7 @@ # Makefile for Kernel-based Virtual Machine module, HYP part # -ccflags-y += -fno-stack-protector +ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING KVM=../../../../virt/kvm diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index 14c4e3b..48b0354 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -2,7 +2,7 @@ # Makefile for Kernel-based Virtual Machine module, HYP part # -ccflags-y += -fno-stack-protector +ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING KVM=../../../../virt/kvm -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Thierry Subject: [RESEND PATCH 2/2] arm/arm64: kvm: Disable branch profiling in HYP code Date: Fri, 20 Oct 2017 12:34:17 +0100 Message-ID: <1508499257-10014-3-git-send-email-julien.thierry@arm.com> References: <1508499257-10014-1-git-send-email-julien.thierry@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id CA7A149D3B for ; Fri, 20 Oct 2017 07:33:25 -0400 (EDT) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wFwgPtj3nTFd for ; Fri, 20 Oct 2017 07:33:24 -0400 (EDT) Received: from foss.arm.com (usa-sjc-mx-foss1.foss.arm.com [217.140.101.70]) by mm01.cs.columbia.edu (Postfix) with ESMTP id BE79549D29 for ; Fri, 20 Oct 2017 07:33:24 -0400 (EDT) In-Reply-To: <1508499257-10014-1-git-send-email-julien.thierry@arm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu Cc: Julien Thierry , marc.zyngier@arm.com, Catalin Marinas , Will Deacon , Russell King , stable@vger.kernel.org List-Id: kvmarm@lists.cs.columbia.edu When HYP code runs into branch profiling code, it attempts to jump to unmapped memory, causing a HYP Panic. Disable the branch profiling for code designed to run at HYP mode. Signed-off-by: Julien Thierry Acked-by: Marc Zyngier Cc: Christoffer Dall Cc: Catalin Marinas Cc: Will Deacon Cc: Russell King Cc: --- arch/arm/kvm/hyp/Makefile | 2 +- arch/arm64/kvm/hyp/Makefile | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/kvm/hyp/Makefile b/arch/arm/kvm/hyp/Makefile index 8679405..92eab1d 100644 --- a/arch/arm/kvm/hyp/Makefile +++ b/arch/arm/kvm/hyp/Makefile @@ -2,7 +2,7 @@ # Makefile for Kernel-based Virtual Machine module, HYP part # -ccflags-y += -fno-stack-protector +ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING KVM=../../../../virt/kvm diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index 14c4e3b..48b0354 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -2,7 +2,7 @@ # Makefile for Kernel-based Virtual Machine module, HYP part # -ccflags-y += -fno-stack-protector +ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING KVM=../../../../virt/kvm -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: julien.thierry@arm.com (Julien Thierry) Date: Fri, 20 Oct 2017 12:34:17 +0100 Subject: [RESEND PATCH 2/2] arm/arm64: kvm: Disable branch profiling in HYP code In-Reply-To: <1508499257-10014-1-git-send-email-julien.thierry@arm.com> References: <1508499257-10014-1-git-send-email-julien.thierry@arm.com> Message-ID: <1508499257-10014-3-git-send-email-julien.thierry@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org When HYP code runs into branch profiling code, it attempts to jump to unmapped memory, causing a HYP Panic. Disable the branch profiling for code designed to run at HYP mode. Signed-off-by: Julien Thierry Acked-by: Marc Zyngier Cc: Christoffer Dall Cc: Catalin Marinas Cc: Will Deacon Cc: Russell King Cc: --- arch/arm/kvm/hyp/Makefile | 2 +- arch/arm64/kvm/hyp/Makefile | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/kvm/hyp/Makefile b/arch/arm/kvm/hyp/Makefile index 8679405..92eab1d 100644 --- a/arch/arm/kvm/hyp/Makefile +++ b/arch/arm/kvm/hyp/Makefile @@ -2,7 +2,7 @@ # Makefile for Kernel-based Virtual Machine module, HYP part # -ccflags-y += -fno-stack-protector +ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING KVM=../../../../virt/kvm diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile index 14c4e3b..48b0354 100644 --- a/arch/arm64/kvm/hyp/Makefile +++ b/arch/arm64/kvm/hyp/Makefile @@ -2,7 +2,7 @@ # Makefile for Kernel-based Virtual Machine module, HYP part # -ccflags-y += -fno-stack-protector +ccflags-y += -fno-stack-protector -DDISABLE_BRANCH_PROFILING KVM=../../../../virt/kvm -- 1.9.1