diff options
Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/sync_regs_test.c')
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/sync_regs_test.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/sync_regs_test.c b/tools/testing/selftests/kvm/x86_64/sync_regs_test.c index d672f0a473f8..fc03a150278d 100644 --- a/tools/testing/selftests/kvm/x86_64/sync_regs_test.c +++ b/tools/testing/selftests/kvm/x86_64/sync_regs_test.c @@ -24,6 +24,10 @@ #define UCALL_PIO_PORT ((uint16_t)0x1000) +struct ucall uc_none = { + .cmd = UCALL_NONE, +}; + /* * ucall is embedded here to protect against compiler reshuffling registers * before calling a function. In this test we only need to get KVM_EXIT_IO @@ -34,7 +38,8 @@ void guest_code(void) asm volatile("1: in %[port], %%al\n" "add $0x1, %%rbx\n" "jmp 1b" - : : [port] "d" (UCALL_PIO_PORT) : "rax", "rbx"); + : : [port] "d" (UCALL_PIO_PORT), "D" (&uc_none) + : "rax", "rbx"); } static void compare_regs(struct kvm_regs *left, struct kvm_regs *right) |