diff options
Diffstat (limited to 'tools/testing/selftests/kvm/arm64/external_aborts.c')
| -rw-r--r-- | tools/testing/selftests/kvm/arm64/external_aborts.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/arm64/external_aborts.c b/tools/testing/selftests/kvm/arm64/external_aborts.c index 062bf84cced1..592b26ded779 100644 --- a/tools/testing/selftests/kvm/arm64/external_aborts.c +++ b/tools/testing/selftests/kvm/arm64/external_aborts.c @@ -250,6 +250,47 @@ static void test_serror(void) kvm_vm_free(vm); } +static void expect_sea_s1ptw_handler(struct ex_regs *regs) +{ + u64 esr = read_sysreg(esr_el1); + + GUEST_ASSERT_EQ(regs->pc, expected_abort_pc); + GUEST_ASSERT_EQ(ESR_ELx_EC(esr), ESR_ELx_EC_DABT_CUR); + GUEST_ASSERT_EQ((esr & ESR_ELx_FSC), ESR_ELx_FSC_SEA_TTW(3)); + + GUEST_DONE(); +} + +static noinline void test_s1ptw_abort_guest(void) +{ + extern char test_s1ptw_abort_insn; + + WRITE_ONCE(expected_abort_pc, (u64)&test_s1ptw_abort_insn); + + asm volatile("test_s1ptw_abort_insn:\n\t" + "ldr x0, [%0]\n\t" + : : "r" (MMIO_ADDR) : "x0", "memory"); + + GUEST_FAIL("Load on S1PTW abort should not retire"); +} + +static void test_s1ptw_abort(void) +{ + struct kvm_vcpu *vcpu; + u64 *ptep, bad_pa; + struct kvm_vm *vm = vm_create_with_dabt_handler(&vcpu, test_s1ptw_abort_guest, + expect_sea_s1ptw_handler); + + ptep = virt_get_pte_hva_at_level(vm, MMIO_ADDR, 2); + bad_pa = BIT(vm->pa_bits) - vm->page_size; + + *ptep &= ~GENMASK(47, 12); + *ptep |= bad_pa; + + vcpu_run_expect_done(vcpu); + kvm_vm_free(vm); +} + static void test_serror_emulated_guest(void) { GUEST_ASSERT(!(read_sysreg(isr_el1) & ISR_EL1_A)); @@ -327,4 +368,5 @@ int main(void) test_serror_masked(); test_serror_emulated(); test_mmio_ease(); + test_s1ptw_abort(); } |