[PATCH] xen/efi: Show error message for EFI_INVALID_PARAMETER error

[Frediano Ziglio <frediano.ziglio@xxxxxxxxx>]

Show string message instead of code.
This happened trying some different ways to boot Xen, specifically
trying loading xen.efi using GRUB2 "linux" command.

Signed-off-by: Frediano Ziglio <frediano.ziglio@xxxxxxxxx>
---
 xen/common/efi/boot.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/common/efi/boot.c b/xen/common/efi/boot.c
index fb3b120982..ded7cc129d 100644
--- a/xen/common/efi/boot.c
+++ b/xen/common/efi/boot.c
@@ -329,6 +329,9 @@ static void __init PrintErrMesg(const CHAR16 *mesg, 
EFI_STATUS ErrCode)
     case EFI_BUFFER_TOO_SMALL:
         mesg = L"Buffer too small";
         break;
+    case EFI_INVALID_PARAMETER:
+        mesg = L"Invalid parameter";
+        break;
     default:
         PrintErr(L"ErrCode: ");
         DisplayUint(ErrCode, 0);
-- 
2.43.0