[PATCH 11/14] KVM: arm64: Expose kvm_pte_valid() helper
From: Quentin Perret <hidden>
Date: 2021-07-19 10:48:31
Also in:
kvmarm, lkml
Subsystem:
arm64 port (aarch64 architecture), kernel virtual machine for arm64 (kvm/arm64), the rest · Maintainers:
Catalin Marinas, Will Deacon, Marc Zyngier, Oliver Upton, Linus Torvalds
The KVM pgtable API exposes the kvm_pgtable_walk() function to allow the definition of walkers outside of pgtable.c. However, it is not easy to implement any of those walkers without some of the low-level helpers, such as kvm_pte_valid(). Make it static inline, and move it to the header file to allow its re-use in other places. Signed-off-by: Quentin Perret <redacted> --- arch/arm64/include/asm/kvm_pgtable.h | 7 +++++++ arch/arm64/kvm/hyp/pgtable.c | 6 ------ 2 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h
index 1aa49d6aabb7..8240c881ae1e 100644
--- a/arch/arm64/include/asm/kvm_pgtable.h
+++ b/arch/arm64/include/asm/kvm_pgtable.h@@ -25,6 +25,13 @@ static inline u64 kvm_get_parange(u64 mmfr0) typedef u64 kvm_pte_t; +#define KVM_PTE_VALID BIT(0) + +static inline bool kvm_pte_valid(kvm_pte_t pte) +{ + return pte & KVM_PTE_VALID; +} + /** * struct kvm_pgtable_mm_ops - Memory management callbacks. * @zalloc_page: Allocate a single zeroed memory page.
diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
index c7120797404a..e0ae57dca827 100644
--- a/arch/arm64/kvm/hyp/pgtable.c
+++ b/arch/arm64/kvm/hyp/pgtable.c@@ -11,7 +11,6 @@ #include <asm/kvm_pgtable.h> #include <asm/stage2_pgtable.h> -#define KVM_PTE_VALID BIT(0) #define KVM_PTE_TYPE BIT(1) #define KVM_PTE_TYPE_BLOCK 0
@@ -135,11 +134,6 @@ static u32 kvm_pgd_pages(u32 ia_bits, u32 start_level) return __kvm_pgd_page_idx(&pgt, -1ULL) + 1; } -static bool kvm_pte_valid(kvm_pte_t pte) -{ - return pte & KVM_PTE_VALID; -} - static bool kvm_pte_table(kvm_pte_t pte, u32 level) { if (level == KVM_PGTABLE_MAX_LEVELS - 1)
--
2.32.0.402.g57bb445576-goog
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