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authorPunit Agrawal <punit.agrawal@arm.com>2018-12-11 20:10:37 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2018-12-18 18:14:47 +0300
commit4ea5af53114091e23a8fc279f25637e6c4e892c6 (patch)
treef81d7d136dc8d099ffb8a7960bad1bf11b321fe8 /arch/riscv
parentf8df73388ee25b5e5f1d26249202e7126ca8139d (diff)
downloadlinux-4ea5af53114091e23a8fc279f25637e6c4e892c6.tar.xz
KVM: arm64: Support dirty page tracking for PUD hugepages
In preparation for creating PUD hugepages at stage 2, add support for write protecting PUD hugepages when they are encountered. Write protecting guest tables is used to track dirty pages when migrating VMs. Also, provide trivial implementations of required kvm_s2pud_* helpers to allow sharing of code with arm32. 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() in arm32 pud helpers ] Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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