linux-kernel - [PATCH 3.14 25/34] arm: kvm: STRICT_MM_TYPECHECKS fix for user_mem

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Message-Id: <20150701183956.260568236@linuxfoundation.org>
Date:	Wed,  1 Jul 2015 11:40:32 -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, Steve Capper <steve.capper@...aro.org>,
	Kim Phillips <kim.phillips@...aro.org>,
	Christoffer Dall <christoffer.dall@...aro.org>,
	Shannon Zhao <shannon.zhao@...aro.org>
Subject: [PATCH 3.14 25/34] arm: kvm: STRICT_MM_TYPECHECKS fix for user_mem_abort

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Steve Capper <steve.capper@...aro.org>

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@...aro.org>
Reviewed-by: Kim Phillips <kim.phillips@...aro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@...aro.org>
Signed-off-by: Shannon Zhao <shannon.zhao@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/kvm/mmu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -850,7 +850,7 @@ static int user_mem_abort(struct kvm_vcp
 		}
 		coherent_cache_guest_page(vcpu, hva, PAGE_SIZE);
 		ret = stage2_set_pte(kvm, memcache, fault_ipa, &new_pte,
-				     mem_type == PAGE_S2_DEVICE);
+			pgprot_val(mem_type) == pgprot_val(PAGE_S2_DEVICE));
 	}
 
 


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