[+Sean]
On 2021/6/11 9:10, Ricardo Koller wrote:
Add the infrastructure needed to enable exception handling in aarch64
selftests. The exception handling defaults to an unhandled-exception
handler which aborts the test, just like x86. These handlers can be
overridden by calling vm_install_exception_handler(vector) or
vm_install_sync_handler(vector, ec). The unhandled exception reporting
from the guest is done using the ucall type introduced in a previous
commit, UCALL_UNHANDLED.
The exception handling code is inspired on kvm-unit-tests.
Signed-off-by: Ricardo Koller <ricarkol@xxxxxxxxxx>
---
tools/testing/selftests/kvm/Makefile | 2 +-
.../selftests/kvm/include/aarch64/processor.h | 63 +++++++++
.../selftests/kvm/lib/aarch64/handlers.S | 126 ++++++++++++++++++
.../selftests/kvm/lib/aarch64/processor.c | 97 ++++++++++++++
4 files changed, 287 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/kvm/lib/aarch64/handlers.S
[...]
+void vm_init_descriptor_tables(struct kvm_vm *vm)
+{
+ vm->handlers = vm_vaddr_alloc(vm, sizeof(struct handlers),
+ vm->page_size, 0, 0);
This raced with commit a75a895e6457 ("KVM: selftests: Unconditionally
use memslot 0 for vaddr allocations") which dropped memslot parameters
from vm_vaddr_alloc().
We can remove the related comments on top of vm_vaddr_alloc() as well.
Zenghui
