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KVM: arm64: Update age handlers to support PUD hugepages

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In preparation for creating larger hugepages at Stage 2, add support
to the age handling notifiers for PUD hugepages when encountered.

Provide trivial helpers for arm32 to allow sharing code.

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>
[ Replaced BUG() => WARN_ON(1) for arm32 PUD helpers ]
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Punit Agrawal
2018-12-11 17:10:40 +00:00
committed by Marc Zyngier
parent eb3f0624ea
commit 35a6396619
4 changed files with 32 additions and 19 deletions
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6
arch/arm/include/asm/kvm_mmu.h
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@@ -117,6 +117,12 @@ static inline pud_t kvm_s2pud_mkyoung(pud_t pud)
return pud;
}
static inline bool kvm_s2pud_young(pud_t pud)
{
WARN_ON(1);
return false;
}
static inline pte_t kvm_s2pte_mkwrite(pte_t pte)
{
pte_val(pte) |= L_PTE_S2_RDWR;