diff options
| author | Marc Zyngier <maz@kernel.org> | 2021-12-27 12:48:06 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-12-28 11:04:20 +0000 |
| commit | 0303ffdb9ecffac4654b16bbf69ba84d131eb8b7 (patch) | |
| tree | a21976a88e6d42ca0047d2d062d9dfaa87081ce3 /tools/testing/selftests/kvm/lib/guest_modes.c | |
| parent | 357c628e1248dd53f5c43a768246a83478a7f489 (diff) | |
KVM: selftests: arm64: Check for supported page sizes
Just as arm64 implemenations don't necessary support all IPA
ranges, they don't all support the same page sizes either. Fun.
Create a dummy VM to snapshot the page sizes supported by the
host, and filter the supported modes.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Link: https://lore.kernel.org/r/20211227124809.1335409-4-maz@kernel.org
Diffstat (limited to 'tools/testing/selftests/kvm/lib/guest_modes.c')
| -rw-r--r-- | tools/testing/selftests/kvm/lib/guest_modes.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/tools/testing/selftests/kvm/lib/guest_modes.c b/tools/testing/selftests/kvm/lib/guest_modes.c index 5e3fdbd992fd..67144fdac433 100644 --- a/tools/testing/selftests/kvm/lib/guest_modes.c +++ b/tools/testing/selftests/kvm/lib/guest_modes.c @@ -5,6 +5,7 @@ #include "guest_modes.h" #ifdef __aarch64__ +#include "processor.h" enum vm_guest_mode vm_mode_default; #endif @@ -17,20 +18,24 @@ void guest_modes_append_default(void) #else { unsigned int limit = kvm_check_cap(KVM_CAP_ARM_VM_IPA_SIZE); + bool ps4k, ps16k, ps64k; int i; + aarch64_get_supported_page_sizes(limit, &ps4k, &ps16k, &ps64k); + vm_mode_default = NUM_VM_MODES; if (limit >= 52) - guest_mode_append(VM_MODE_P52V48_64K, true, true); + guest_mode_append(VM_MODE_P52V48_64K, ps64k, ps64k); if (limit >= 48) { - guest_mode_append(VM_MODE_P48V48_4K, true, true); - guest_mode_append(VM_MODE_P48V48_64K, true, true); + guest_mode_append(VM_MODE_P48V48_4K, ps4k, ps4k); + guest_mode_append(VM_MODE_P48V48_64K, ps64k, ps64k); } if (limit >= 40) { - guest_mode_append(VM_MODE_P40V48_4K, true, true); - guest_mode_append(VM_MODE_P40V48_64K, true, true); - vm_mode_default = VM_MODE_P40V48_4K; + guest_mode_append(VM_MODE_P40V48_4K, ps4k, ps4k); + guest_mode_append(VM_MODE_P40V48_64K, ps64k, ps64k); + if (ps4k) + vm_mode_default = VM_MODE_P40V48_4K; } /* |