From: Marc Zyngier <marc.zyngier@arm.com>
Date: Tue, 11 Jun 2013 17:05:25 +0000 (+0100)
Subject: arm64: KVM: add missing dsb before invalidating Stage-2 TLBs
X-Git-Tag: v3.11-rc7~22^2~1^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f142e5eeb724cfbedd203b32b3b542d78dbe2545;p=pandora-kernel.git

arm64: KVM: add missing dsb before invalidating Stage-2 TLBs

When performing a Stage-2 TLB invalidation, it is necessary to
make sure the write to the page tables is observable by all CPUs.

For this purpose, add dsb instructions to __kvm_tlb_flush_vmid_ipa
and __kvm_flush_vm_context before doing the TLB invalidation itself.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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