From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
Add helper functions to print out errors from the TDX module in a uniform
manner.
Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
Co-developed-by: Tony Lindgren <tony.lindgren@xxxxxxxxxxxxxxx>
Signed-off-by: Tony Lindgren <tony.lindgren@xxxxxxxxxxxxxxx>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx>
Reviewed-by: Binbin Wu <binbin.wu@xxxxxxxxxxxxxxx>
Reviewed-by: Yuan Yao <yuan.yao@xxxxxxxxx>
---
uAPI breakout v2:
- Stringify the error codes, use ____pr_tdx_error_N() naming (Isaku, Kai)
uAPI breakout v1:
- Update for the wrapper functions for SEAMCALLs. (Sean)
- Reorder header file include to adjust argument change of the C wrapper.
- Fix bisectability issues in headers (Kai)
- Updates from seamcall overhaul (Kai)
v19:
- dropped unnecessary include <asm/tdx.h>
v18:
- Added Reviewed-by Binbin.
---
arch/x86/kvm/vmx/tdx.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c
index f2830ff2af1d..60b577379a9a 100644
--- a/arch/x86/kvm/vmx/tdx.c
+++ b/arch/x86/kvm/vmx/tdx.c
@@ -7,6 +7,21 @@
#undef pr_fmt
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define pr_tdx_error(__fn, __err) \
+ pr_err_ratelimited("SEAMCALL %s failed: 0x%llx\n", #__fn, __err)
+
+#define __pr_tdx_error_N(__fn_str, __err, __fmt, ...) \
+ pr_err_ratelimited("SEAMCALL " __fn_str " failed: 0x%llx, " __fmt, __err, __VA_ARGS__)
+
+#define pr_tdx_error_1(__fn, __err, __rcx) \
+ __pr_tdx_error_N(#__fn, __err, "rcx 0x%llx\n", __rcx)
+
+#define pr_tdx_error_2(__fn, __err, __rcx, __rdx) \
+ __pr_tdx_error_N(#__fn, __err, "rcx 0x%llx, rdx 0x%llx\n", __rcx, __rdx)
+
+#define pr_tdx_error_3(__fn, __err, __rcx, __rdx, __r8) \
+ __pr_tdx_error_N(#__fn, __err, "rcx 0x%llx, rdx 0x%llx, r8 0x%llx\n", __rcx, __rdx, __r8)
+
bool enable_tdx __ro_after_init;
module_param_named(tdx, enable_tdx, bool, 0444);
--
2.47.0
