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| author | Sean Christopherson <seanjc@google.com> | 2026-07-31 10:33:38 -0700 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-07-31 14:03:09 -0700 |
| commit | 6fc510e1f10129090aabd5ff352e952bfd82fce9 (patch) | |
| tree | 0eca68e31857f9196174bffd4d67d8b565107e27 | |
| parent | 9fd7a4433d74fbdb12b14ca8e6e600710b3a11b4 (diff) | |
| download | linux-next-6fc510e1f10129090aabd5ff352e952bfd82fce9.tar.gz linux-next-6fc510e1f10129090aabd5ff352e952bfd82fce9.zip | |
KVM: selftests: Use port 0x80 in invalid nVMX guest state test
Use port 0x80 instead of 0x2000 to trigger an L2 => L0 VM-Exit in the nVMX
invalid guest state test, so that the test can be expanded to cover RSM in
the L2 => SMI => L2 path without having to manually encode a MOV to DX (the
immediate form of IN only supports an imm8).
Use port 0x80 as it's a well-known port and is used by other tests, e.g. in
the coalesced I/O test.
Link: https://patch.msgid.link/20260731173340.2644656-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | tools/testing/selftests/kvm/x86/vmx_invalid_nested_guest_state.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tools/testing/selftests/kvm/x86/vmx_invalid_nested_guest_state.c b/tools/testing/selftests/kvm/x86/vmx_invalid_nested_guest_state.c index 6d88c54f69fa..87f242704030 100644 --- a/tools/testing/selftests/kvm/x86/vmx_invalid_nested_guest_state.c +++ b/tools/testing/selftests/kvm/x86/vmx_invalid_nested_guest_state.c @@ -9,7 +9,7 @@ #include "kselftest.h" -#define ARBITRARY_IO_PORT 0x2000 +#define ARBITRARY_IO_PORT 0x80 static struct kvm_vm *vm; @@ -19,8 +19,8 @@ static void l2_guest_code(void) * Generate an exit to L0 userspace, i.e. main(), via I/O to an * arbitrary port. */ - asm volatile("inb %%dx, %%al" - : : [port] "d" (ARBITRARY_IO_PORT) : "rax"); + asm volatile("inb $" __stringify(ARBITRARY_IO_PORT) ", %%al" + ::: "rax"); } static void l1_guest_code(struct vmx_pages *vmx_pages) |