diff options
| -rw-r--r-- | arch/x86/include/asm/tdx.h | 1 | ||||
| -rw-r--r-- | arch/x86/virt/vmx/tdx/tdx.c | 44 |
2 files changed, 45 insertions, 0 deletions
diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h index 24c0357081bd..2c0f4162fe99 100644 --- a/arch/x86/include/asm/tdx.h +++ b/arch/x86/include/asm/tdx.h @@ -27,6 +27,7 @@ /* * TDX module SEAMCALL leaf function error codes */ +#define TDX_SUCCESS 0ULL #define TDX_RND_NO_ENTROPY 0x8000020300000000ULL #ifndef __ASSEMBLY__ diff --git a/arch/x86/virt/vmx/tdx/tdx.c b/arch/x86/virt/vmx/tdx/tdx.c index 94689aef44a6..262b9b64a50b 100644 --- a/arch/x86/virt/vmx/tdx/tdx.c +++ b/arch/x86/virt/vmx/tdx/tdx.c @@ -21,6 +21,50 @@ static u32 tdx_global_keyid __ro_after_init; static u32 tdx_guest_keyid_start __ro_after_init; static u32 tdx_nr_guest_keyids __ro_after_init; +typedef void (*sc_err_func_t)(u64 fn, u64 err, struct tdx_module_args *args); + +static inline void seamcall_err(u64 fn, u64 err, struct tdx_module_args *args) +{ + pr_err("SEAMCALL (0x%016llx) failed: 0x%016llx\n", fn, err); +} + +static inline void seamcall_err_ret(u64 fn, u64 err, + struct tdx_module_args *args) +{ + seamcall_err(fn, err, args); + pr_err("RCX 0x%016llx RDX 0x%016llx R08 0x%016llx\n", + args->rcx, args->rdx, args->r8); + pr_err("R09 0x%016llx R10 0x%016llx R11 0x%016llx\n", + args->r9, args->r10, args->r11); +} + +static inline int sc_retry_prerr(sc_func_t func, sc_err_func_t err_func, + u64 fn, struct tdx_module_args *args) +{ + u64 sret = sc_retry(func, fn, args); + + if (sret == TDX_SUCCESS) + return 0; + + if (sret == TDX_SEAMCALL_VMFAILINVALID) + return -ENODEV; + + if (sret == TDX_SEAMCALL_GP) + return -EOPNOTSUPP; + + if (sret == TDX_SEAMCALL_UD) + return -EACCES; + + err_func(fn, sret, args); + return -EIO; +} + +#define seamcall_prerr(__fn, __args) \ + sc_retry_prerr(__seamcall, seamcall_err, (__fn), (__args)) + +#define seamcall_prerr_ret(__fn, __args) \ + sc_retry_prerr(__seamcall_ret, seamcall_err_ret, (__fn), (__args)) + static __init int record_keyid_partitioning(u32 *tdx_keyid_start, u32 *nr_tdx_keyids) { |