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| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2016-03-22 18:20:28 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-04-21 14:57:56 +0200 |
| commit | 66f877faf9cc23232f25b423758eaa167de1ad09 (patch) | |
| tree | c16340cfb5a78d17272fedde70b20c4614b1d4fd /arch | |
| parent | kvm-arm: arm64: Introduce stage2 page table helpers (diff) | |
| download | linux-66f877faf9cc23232f25b423758eaa167de1ad09.tar.xz linux-66f877faf9cc23232f25b423758eaa167de1ad09.zip | |
kvm-arm: arm64: 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>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/include/asm/kvm_mmu.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index e3f53e3eb4d9..edf3c62c660e 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -249,6 +249,20 @@ static inline bool kvm_page_empty(void *ptr) #endif +#define hyp_pte_table_empty(ptep) kvm_page_empty(ptep) + +#ifdef __PAGETABLE_PMD_FOLDED +#define hyp_pmd_table_empty(pmdp) (0) +#else +#define hyp_pmd_table_empty(pmdp) kvm_page_empty(pmdp) +#endif + +#ifdef __PAGETABLE_PUD_FOLDED +#define hyp_pud_table_empty(pudp) (0) +#else +#define hyp_pud_table_empty(pudp) kvm_page_empty(pudp) +#endif + struct kvm; #define kvm_flush_dcache_to_poc(a,l) __flush_dcache_area((a), (l)) |