From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PULL 4/8] arm/arm64: kvm: Disable branch profiling in HYP code
Date: Mon, 30 Oct 2017 03:55:59 +0100 [thread overview]
Message-ID: <20171030025603.23550-5-christoffer.dall@linaro.org> (raw)
In-Reply-To: <20171030025603.23550-1-christoffer.dall@linaro.org>
From: Julien Thierry <julien.thierry@arm.com>
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 <julien.thierry@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---
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 8679405b0b2b..92eab1d51785 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 14c4e3b14bcb..48b03547a969 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
--
2.14.2
next prev parent reply other threads:[~2017-10-30 2:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-30 2:55 [PULL 0/8] KVM/ARM Fixes for v4.14 Christoffer Dall
2017-10-30 2:55 ` [PULL 1/8] KVM: arm64: its: Fix missing dynamic allocation check in scan_its_table Christoffer Dall
2017-10-30 2:55 ` [PULL 2/8] arm/arm64: KVM: set right LR register value for 32 bit guest when inject abort Christoffer Dall
2017-10-30 2:55 ` [PULL 3/8] arm/arm64: kvm: Move initialization completion message Christoffer Dall
2017-10-30 2:55 ` Christoffer Dall [this message]
2017-10-30 2:56 ` [PULL 5/8] KVM: arm/arm64: vgic-its: Fix return value for device table restore Christoffer Dall
2017-10-30 2:56 ` [PULL 6/8] KVM: arm/arm64: vgic-its: Fix vgic_its_restore_collection_table returned value Christoffer Dall
2017-10-30 2:56 ` [PULL 7/8] KVM: arm/arm64: vgic-its: Check CBASER/BASER validity before enabling the ITS Christoffer Dall
2017-10-30 2:56 ` [PULL 8/8] KVM: arm/arm64: vgic-its: Check GITS_BASER Valid bit before saving tables Christoffer Dall
2017-11-02 17:38 ` [PULL 0/8] KVM/ARM Fixes for v4.14 Paolo Bonzini
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