diff options
| author | Quentin Perret <qperret@google.com> | 2022-11-10 20:02:53 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-11-11 18:18:58 +0100 |
| commit | f41dff4efb918db68923a826e966ca62c7c8e929 (patch) | |
| tree | 066dfafdfe64e20b689809729de4d34b69da317d /arch/arm64/include/asm | |
| parent | KVM: arm64: Instantiate guest stage-2 page-tables at EL2 (diff) | |
| download | linux-f41dff4efb918db68923a826e966ca62c7c8e929.tar.xz linux-f41dff4efb918db68923a826e966ca62c7c8e929.zip | |
KVM: arm64: Return guest memory from EL2 via dedicated teardown memcache
Rather than relying on the host to free the previously-donated pKVM
hypervisor VM pages explicitly on teardown, introduce a dedicated
teardown memcache which allows the host to reclaim guest memory
resources without having to keep track of all of the allocations made by
the pKVM hypervisor at EL2.
Tested-by: Vincent Donnefort <vdonnefort@google.com>
Co-developed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
[maz: dropped __maybe_unused from unmap_donated_memory_noclear()]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221110190259.26861-21-will@kernel.org
Diffstat (limited to 'arch/arm64/include/asm')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 57218f0c449e..63307e7dc9c5 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -176,12 +176,7 @@ typedef unsigned int pkvm_handle_t; struct kvm_protected_vm { pkvm_handle_t handle; - - struct { - void *pgd; - void *vm; - void *vcpus[KVM_MAX_VCPUS]; - } hyp_donations; + struct kvm_hyp_memcache teardown_mc; }; struct kvm_arch { |