]> git.baikalelectronics.ru Git - kernel.git/commit
KVM: arm64: Support PUD hugepage in stage2_is_exec()
authorPunit Agrawal <punit.agrawal@arm.com>
Tue, 11 Dec 2018 17:10:38 +0000 (17:10 +0000)
committerMarc Zyngier <marc.zyngier@arm.com>
Tue, 18 Dec 2018 15:14:48 +0000 (15:14 +0000)
commitd7ffee769191d0d3ef809930a14188617cc1f6e2
tree8b99ba93dd40ac0b23aaf618ca673dead925bd37
parent215c04a846672ead09ff5b52c9c280c0cdc93f39
KVM: arm64: Support PUD hugepage in stage2_is_exec()

In preparation for creating PUD hugepages at stage 2, add support for
detecting execute permissions on PUD page table entries. Faults due to
lack of execute permissions on page table entries is used to perform
i-cache invalidation on first execute.

Provide trivial implementations of arm32 helpers to allow sharing of
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) in arm32 PUD helpers ]
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
arch/arm/include/asm/kvm_mmu.h
arch/arm64/include/asm/kvm_mmu.h
arch/arm64/include/asm/pgtable-hwdef.h
virt/kvm/arm/mmu.c