[PATCH v2 08/17] kvm-arm: arm: Introduce hyp page table empty checks

From	Suzuki K Poulose <suzuki.poulose@arm.com>
Newsgroups	linux.kernel
Subject	[PATCH v2 08/17] kvm-arm: arm: Introduce hyp page table empty checks
Date	2016-04-14 15:30 +0200
Message-ID	<rnPvm-2fL-45@gated-at.bofh.it> (permalink)
References	<rnPvk-2fL-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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.

Cc: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
 arch/arm/include/asm/kvm_mmu.h |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h
index 7d207b4..901c1ea 100644
--- a/arch/arm/include/asm/kvm_mmu.h
+++ b/arch/arm/include/asm/kvm_mmu.h
@@ -162,6 +162,10 @@ static inline bool kvm_page_empty(void *ptr)
 #define kvm_pmd_table_empty(kvm, pmdp) kvm_page_empty(pmdp)
 #define kvm_pud_table_empty(kvm, pudp) (0)
 
+#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) (0)
+
 static inline void *kvm_get_hwpgd(struct kvm *kvm)
 {
 	return kvm->arch.pgd;
-- 
1.7.9.5

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[PATCH v2 08/17] kvm-arm: arm: Introduce hyp page table empty checks Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-04-14 15:30 +0200
  Re: [PATCH v2 08/17] kvm-arm: arm: Introduce hyp page table empty  checks Marc Zyngier <marc.zyngier@arm.com> - 2016-04-14 16:30 +0200

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