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Date: Sun, 18 Aug 2013 13:35:59 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Marc Zyngier <marc.zyngier@....com>, Christoffer Dall <christoffer.dall@...aro.org>, Jonghwan Choi <jhbird.choi@...sung.com> Subject: [ 10/45] ARM: KVM: add missing dsb before invalidating Stage-2 TLBs 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Marc Zyngier <marc.zyngier@....com> commit 479c5ae2f8a55509b691494cd13691d3dc31d102 upstream. 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 a dsb instruction to __kvm_tlb_flush_vmid_ipa before doing the TLB invalidation itself. Signed-off-by: Marc Zyngier <marc.zyngier@....com> Signed-off-by: Christoffer Dall <christoffer.dall@...aro.org> Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- arch/arm/kvm/interrupts.S | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -49,6 +49,7 @@ __kvm_hyp_code_start: ENTRY(__kvm_tlb_flush_vmid_ipa) push {r2, r3} + dsb ishst add r0, r0, #KVM_VTTBR ldrd r2, r3, [r0] mcrr p15, 6, r2, r3, c2 @ Write VTTBR -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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