From: Suzuki K Poulose <suzuki.poulose@arm.com>
Date: Tue, 22 Mar 2016 17:15:55 +0000 (+0000)
Subject: kvm-arm: arm: Introduce hyp page table empty checks
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b1d030a73e9039dcdec951327e9ce9e8d682067f;p=linux-beck.git

kvm-arm: arm: Introduce hyp page table empty checks

Introduce hyp_pxx_table_empty helpers for checking whether
a given table entry is empty. This will be used explicitly
once we switch to explicit routines for hyp page table walk.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---

diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h
index 7d207b44a656..5522cdd9dedf 100644
--- a/arch/arm/include/asm/kvm_mmu.h
+++ b/arch/arm/include/asm/kvm_mmu.h
@@ -160,7 +160,11 @@ static inline bool kvm_page_empty(void *ptr)
 
 #define kvm_pte_table_empty(kvm, ptep) kvm_page_empty(ptep)
 #define kvm_pmd_table_empty(kvm, pmdp) kvm_page_empty(pmdp)
-#define kvm_pud_table_empty(kvm, pudp) (0)
+#define kvm_pud_table_empty(kvm, pudp) false
+
+#define hyp_pte_table_empty(ptep) kvm_page_empty(ptep)
+#define hyp_pmd_table_empty(pmdp) kvm_page_empty(pmdp)
+#define hyp_pud_table_empty(pudp) false
 
 static inline void *kvm_get_hwpgd(struct kvm *kvm)
 {