From 30d146175fb14d8d4650aed8981ce04ad83dcdca Mon Sep 17 00:00:00 2001
From: Ivan Shapovalov <intelfx@intelfx.name>
Date: Tue, 28 Jul 2026 17:30:18 +0300
Subject: [PATCH] OvmfPkg/VirtioInputDxe: ReadKeyStrokeEx must always expose
 KeyState

Signed-off-by: Ivan Shapovalov <intelfx@intelfx.name>
Tested-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@futurfusion.io>
---
 OvmfPkg/VirtioInputDxe/VirtioKeyboard.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/OvmfPkg/VirtioInputDxe/VirtioKeyboard.c b/OvmfPkg/VirtioInputDxe/VirtioKeyboard.c
index 58a45841c2..434b75b86f 100644
--- a/OvmfPkg/VirtioInputDxe/VirtioKeyboard.c
+++ b/OvmfPkg/VirtioInputDxe/VirtioKeyboard.c
@@ -570,6 +570,11 @@ VirtioKeyboardReadKeyStrokeEx (
   OldTpl = gBS->RaiseTPL (TPL_NOTIFY);
 
   Status = PopEfikeyBufHead (&Dev->KeyQueue, KeyData);
+  // "There was no keystroke data available. Current KeyData.KeyState values are exposed."
+  if (Status == EFI_NOT_READY) {
+    ZeroMem (&KeyData->Key, sizeof (KeyData->Key));
+    VirtioKeyboardInitializeKeyState (Dev, &KeyData->KeyState);
+  }
 
   gBS->RestoreTPL (OldTpl);