diff options
| -rw-r--r-- | tools/testing/selftests/kvm/x86/debug_regs.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/tools/testing/selftests/kvm/x86/debug_regs.c b/tools/testing/selftests/kvm/x86/debug_regs.c index 0dfaf03cd0a0..13aaa7f3f8d9 100644 --- a/tools/testing/selftests/kvm/x86/debug_regs.c +++ b/tools/testing/selftests/kvm/x86/debug_regs.c @@ -19,6 +19,7 @@ u32 guest_value; extern unsigned char sw_bp, hw_bp, write_data, ss_start, bd_start; +extern unsigned char fep_bd_start; static void guest_code(void) { @@ -64,6 +65,10 @@ static void guest_code(void) /* DR6.BD test */ asm volatile("bd_start: mov %%dr0, %%rax" : : : "rax"); + + if (is_forced_emulation_enabled) + asm volatile(KVM_FEP "fep_bd_start: mov %%dr0, %%rax" : : : "rax"); + GUEST_DONE(); } @@ -185,7 +190,7 @@ int main(void) target_dr6); } - /* Finally test global disable */ + /* test global disable */ memset(&debug, 0, sizeof(debug)); debug.control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP; debug.arch.debugreg[7] = 0x400 | DR7_GD; @@ -202,6 +207,22 @@ int main(void) run->debug.arch.pc, target_rip, run->debug.arch.dr6, target_dr6); + /* test global disable in emulation */ + if (is_forced_emulation_enabled) { + /* Skip the 3-bytes "mov dr0" */ + vcpu_skip_insn(vcpu, 3); + vcpu_run(vcpu); + TEST_ASSERT(run->exit_reason == KVM_EXIT_DEBUG && + run->debug.arch.exception == DB_VECTOR && + run->debug.arch.pc == CAST_TO_RIP(fep_bd_start) && + run->debug.arch.dr6 == target_dr6, + "DR7.GD: exit %d exception %d rip 0x%llx " + "(should be 0x%llx) dr6 0x%llx (should be 0x%llx)", + run->exit_reason, run->debug.arch.exception, + run->debug.arch.pc, CAST_TO_RIP(fep_bd_start), + run->debug.arch.dr6, target_dr6); + } + /* Disable all debug controls, run to the end */ memset(&debug, 0, sizeof(debug)); vcpu_guest_debug_set(vcpu, &debug); |