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Date:	Tue, 10 Nov 2015 18:03:21 -0800
From:	Laura Abbott <labbott@...oraproject.org>
To:	Christoffer Dall <christoffer.dall@...aro.org>,
	Marc Zyngier <marc.zyngier@....com>
Cc:	Laura Abbott <labbott@...oraproject.org>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] arm: kvm: Fix STRICT_MM_TYPECHECK errors


PAGE_S2_DEVICE is a pgprot val and needs to be accessed using the proper
accessors. Switch to these accessors to avoid errors with
STRICT_MM_TYPECHECK.

Signed-off-by: Laura Abbott <labbott@...oraproject.org>
---
Found in the course of other work
---
 arch/arm/kvm/mmu.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index 6984342..43f8162 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -213,7 +213,8 @@ static void unmap_ptes(struct kvm *kvm, pmd_t *pmd,
 			kvm_tlb_flush_vmid_ipa(kvm, addr);
 
 			/* No need to invalidate the cache for device mappings */
-			if ((pte_val(old_pte) & PAGE_S2_DEVICE) != PAGE_S2_DEVICE)
+			if ((pte_val(old_pte) & pgprot_val(PAGE_S2_DEVICE)) !=
+			     pgprot_val(PAGE_S2_DEVICE))
 				kvm_flush_dcache_pte(old_pte);
 
 			put_page(virt_to_page(pte));
@@ -306,7 +307,8 @@ static void stage2_flush_ptes(struct kvm *kvm, pmd_t *pmd,
 	pte = pte_offset_kernel(pmd, addr);
 	do {
 		if (!pte_none(*pte) &&
-		    (pte_val(*pte) & PAGE_S2_DEVICE) != PAGE_S2_DEVICE)
+		    (pte_val(*pte) & pgprot_val(PAGE_S2_DEVICE)) !=
+		     pgprot_val(PAGE_S2_DEVICE))
 			kvm_flush_dcache_pte(*pte);
 	} while (pte++, addr += PAGE_SIZE, addr != end);
 }
-- 
2.5.0

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