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| author |   Marc Zyngier <maz@kernel.org> | 2021-12-27 12:48:08 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-12-28 11:04:20 +0000 |
| commit | e7f58a6bd28bfd2e4f60312abf48f07de2c4121c (patch) | |
| tree | 81865fb3a2992cd1e1435ed830152afd2ff22b73 /tools/testing/selftests/kvm/lib/aarch64/processor.c | |
| parent | KVM: selftests: arm64: Rework TCR_EL1 configuration (diff) | |
| download | linux-dev-e7f58a6bd28bfd2e4f60312abf48f07de2c4121c.tar.xz linux-dev-e7f58a6bd28bfd2e4f60312abf48f07de2c4121c.zip | |
KVM: selftests: arm64: Add support for VM_MODE_P36V48_{4K,64K}
Some of the arm64 systems out there have an IPA space that is
positively tiny. Nonetheless, they make great KVM hosts.
Add support for 36bit IPA support with 4kB pages, which makes
some of the fruity machines happy. Whilst we're at it, add support
for 64kB pages as well, though these boxes have no support for it.
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211227124809.1335409-6-maz@kernel.org
Diffstat (limited to 'tools/testing/selftests/kvm/lib/aarch64/processor.c')
| -rw-r--r-- | tools/testing/selftests/kvm/lib/aarch64/processor.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c index d005543aa3e2..70395c777ea4 100644 --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c @@ -249,10 +249,12 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_vcpu_init case VM_MODE_P52V48_64K: case VM_MODE_P48V48_64K: case VM_MODE_P40V48_64K: + case VM_MODE_P36V48_64K: tcr_el1 |= 1ul << 14; /* TG0 = 64KB */ break; case VM_MODE_P48V48_4K: case VM_MODE_P40V48_4K: + case VM_MODE_P36V48_4K: tcr_el1 |= 0ul << 14; /* TG0 = 4KB */ break; default: @@ -272,6 +274,10 @@ void aarch64_vcpu_setup(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_vcpu_init case VM_MODE_P40V48_64K: tcr_el1 |= 2ul << 32; /* IPS = 40 bits */ break; + case VM_MODE_P36V48_4K: + case VM_MODE_P36V48_64K: + tcr_el1 |= 1ul << 32; /* IPS = 36 bits */ + break; default: TEST_FAIL("Unknown guest mode, mode: 0x%x", vm->mode); } |