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| author | Julien Thierry <julien.thierry@arm.com> | 2017-10-20 12:34:17 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2017-10-21 17:03:20 +0200 |
| commit | f9b269f3098121b5d54aaf822e0898c8ed1d3fec (patch) | |
| tree | 9aa75d23cec3504aefc170d6d2dee142b689c6a0 /arch/arm/kvm | |
| parent | fe7d7b03c61f6dab70a973fb32c90f2254784e03 (diff) | |
| download | lwn-f9b269f3098121b5d54aaf822e0898c8ed1d3fec.tar.gz lwn-f9b269f3098121b5d54aaf822e0898c8ed1d3fec.zip | |
arm/arm64: kvm: Disable branch profiling in HYP code
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>
Diffstat (limited to 'arch/arm/kvm')
| -rw-r--r-- | arch/arm/kvm/hyp/Makefile | 2 |
1 files changed, 1 insertions, 1 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 |