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| author | Punit Agrawal <punit.agrawal@arm.com> | 2018-12-11 17:10:41 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-12-18 15:14:49 +0000 |
| commit | b8e0ba7c8bea994011aff3b4c35256b180fab874 (patch) | |
| tree | f121e1e3e828dbea5616361533fd7c88d6fc65d7 /arch/arm/include/asm/stage2_pgtable.h | |
| parent | 35a63966194dd994f44150f07398c62f8dca011e (diff) | |
| download | linux-b8e0ba7c8bea994011aff3b4c35256b180fab874.tar.bz2 | |
KVM: arm64: Add support for creating PUD hugepages at stage 2
KVM only supports PMD hugepages at stage 2. Now that the various page
handling routines are updated, extend the stage 2 fault handling to
map in PUD hugepages.
Addition of PUD hugepage support enables additional page sizes (e.g.,
1G with 4K granule) which can be useful on cores that support mapping
larger block sizes in the TLB entries.
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-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>
[ Replace BUG() => WARN_ON(1) for arm32 PUD helpers ]
Signed-off-by: Suzuki Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm/include/asm/stage2_pgtable.h')
| -rw-r--r-- | arch/arm/include/asm/stage2_pgtable.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/include/asm/stage2_pgtable.h b/arch/arm/include/asm/stage2_pgtable.h index f6a7ea805232..f9017167a8d1 100644 --- a/arch/arm/include/asm/stage2_pgtable.h +++ b/arch/arm/include/asm/stage2_pgtable.h @@ -68,4 +68,9 @@ stage2_pmd_addr_end(struct kvm *kvm, phys_addr_t addr, phys_addr_t end) #define stage2_pmd_table_empty(kvm, pmdp) kvm_page_empty(pmdp) #define stage2_pud_table_empty(kvm, pudp) false +static inline bool kvm_stage2_has_pud(struct kvm *kvm) +{ + return false; +} + #endif /* __ARM_S2_PGTABLE_H_ */ |