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| author |   Marc Zyngier <marc.zyngier@arm.com> | 2018-02-01 11:07:35 +0000 |
|---|---|---|
| committer |   Russell King <rmk+kernel@armlinux.org.uk> | 2018-05-31 11:09:03 +0100 |
| commit | 3f7e8e2e1ebda787f156ce46e3f0a9ce2833fa4f (patch) | |
| tree | cb2e36e2ad4908ce0b3daf776c8857a729a0fc31 /arch/arm/include/asm/kvm_asm.h | |
| parent | ARM: spectre-v2: warn about incorrect context switching functions (diff) | |
| download | linux-dev-3f7e8e2e1ebda787f156ce46e3f0a9ce2833fa4f.tar.xz linux-dev-3f7e8e2e1ebda787f156ce46e3f0a9ce2833fa4f.zip | |
ARM: KVM: invalidate BTB on guest exit for Cortex-A12/A17
In order to avoid aliasing attacks against the branch predictor,
let's invalidate the BTB on guest exit. This is made complicated
by the fact that we cannot take a branch before invalidating the
BTB.
We only apply this to A12 and A17, which are the only two ARM
cores on which this useful.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Boot-tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/include/asm/kvm_asm.h')
| -rw-r--r-- | arch/arm/include/asm/kvm_asm.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h index 36dd2962a42d..df24ed48977d 100644 --- a/arch/arm/include/asm/kvm_asm.h +++ b/arch/arm/include/asm/kvm_asm.h @@ -61,8 +61,6 @@ struct kvm_vcpu; extern char __kvm_hyp_init[]; extern char __kvm_hyp_init_end[]; -extern char __kvm_hyp_vector[]; - extern void __kvm_flush_vm_context(void); extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa); extern void __kvm_tlb_flush_vmid(struct kvm *kvm); |