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[added,to,the,3.12,stable,tree] arm: kvm: STRICT_MM_TYPECHECKS fix for user_mem_abort

Message ID 1430385911-20480-51-git-send-email-jslaby@suse.cz
State New
Headers show

Commit Message

Jiri Slaby April 30, 2015, 9:24 a.m. UTC 
From: Steve Capper <steve.capper@linaro.org>

This patch has been added to the 3.12 stable tree. If you have any
objections, please let us know.
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Patch

===============

commit 3d08c629244257473450a8ba17cb8184b91e68f8 upstream.

Commit:
b886576 ARM: KVM: user_mem_abort: support stage 2 MMIO page mapping

introduced some code in user_mem_abort that failed to compile if
STRICT_MM_TYPECHECKS was enabled.

This patch fixes up the failing comparison.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Reviewed-by: Kim Phillips <kim.phillips@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm/kvm/mmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index f9740851a6a4..90422a536083 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -698,7 +698,7 @@  static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
 		kvm_set_pfn_dirty(pfn);
 	}
 	stage2_set_pte(vcpu->kvm, memcache, fault_ipa, &new_pte,
-		       mem_type == PAGE_S2_DEVICE);
+		pgprot_val(mem_type) == pgprot_val(PAGE_S2_DEVICE));
 
 out_unlock:
 	spin_unlock(&vcpu->kvm->mmu_lock);