KVM: arm64: Introduce hyp_alloc_private_va_range()

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hyp_alloc_private_va_range() can be used to reserve private VA ranges
in the nVHE hypervisor. Allocations are aligned based on the order of
the requested size.

This will be used to implement stack guard pages for KVM nVHE hypervisor
(nVHE Hyp mode / not pKVM), in a subsequent patch in the series.

Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220420214317.3303360-2-kaleshsingh@google.com

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Kalesh Singh 2022-04-20 14:42:52 -07:00 • committed by Marc Zyngier

parent b2d229d4dd

commit 92abe0f81e

2 changed files with 44 additions and 21 deletions

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arch/arm64/include/asm/kvm_mmu.h

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arch/arm64/kvm/mmu.c

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