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| author | Punit Agrawal <punit.agrawal@arm.com> | 2018-12-11 20:10:36 +0300 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-12-18 18:14:47 +0300 |
| commit | f8df73388ee25b5e5f1d26249202e7126ca8139d (patch) | |
| tree | 8eea39591f050f221ff263b4fb2d2381ee395263 /arch/arm | |
| parent | 6396b852e46e562f4742ed0a9042b537eb26b8aa (diff) | |
| download | linux-f8df73388ee25b5e5f1d26249202e7126ca8139d.tar.xz | |
KVM: arm/arm64: Introduce helpers to manipulate page table entries
Introduce helpers to abstract architectural handling of the conversion
of pfn to page table entries and marking a PMD page table entry as a
block entry.
The helpers are introduced in preparation for supporting PUD hugepages
at stage 2 - which are supported on arm64 but do not exist on arm.
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/kvm_mmu.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/include/asm/kvm_mmu.h b/arch/arm/include/asm/kvm_mmu.h index 1098ffc3d54b..e6eff8bf5d7f 100644 --- a/arch/arm/include/asm/kvm_mmu.h +++ b/arch/arm/include/asm/kvm_mmu.h @@ -82,6 +82,11 @@ void kvm_clear_hyp_idmap(void); #define kvm_mk_pud(pmdp) __pud(__pa(pmdp) | PMD_TYPE_TABLE) #define kvm_mk_pgd(pudp) ({ BUILD_BUG(); 0; }) +#define kvm_pfn_pte(pfn, prot) pfn_pte(pfn, prot) +#define kvm_pfn_pmd(pfn, prot) pfn_pmd(pfn, prot) + +#define kvm_pmd_mkhuge(pmd) pmd_mkhuge(pmd) + static inline pte_t kvm_s2pte_mkwrite(pte_t pte) { pte_val(pte) |= L_PTE_S2_RDWR; |