diff --git a/pvmfw/src/mmio_guard.rs b/pvmfw/src/mmio_guard.rs
index 2206052..ce74abb 100644
--- a/pvmfw/src/mmio_guard.rs
+++ b/pvmfw/src/mmio_guard.rs
@@ -17,6 +17,7 @@
 use crate::helpers;
 use crate::smccc;
 use core::{fmt, result};
+use log::info;
 
 #[derive(Debug, Clone)]
 pub enum Error {
@@ -90,5 +91,10 @@
     let mut args = [0u64; 17];
     args[0] = ipa;
 
-    smccc::checked_hvc64_expect_zero(VENDOR_HYP_KVM_MMIO_GUARD_UNMAP_FUNC_ID, args)
+    // TODO(b/251426790): pKVM currently returns NOT_SUPPORTED for SUCCESS.
+    info!("Expecting a bug making MMIO_GUARD_UNMAP return NOT_SUPPORTED on success");
+    match smccc::checked_hvc64_expect_zero(VENDOR_HYP_KVM_MMIO_GUARD_UNMAP_FUNC_ID, args) {
+        Err(smccc::Error::NotSupported) | Ok(_) => Ok(()),
+        x => x,
+    }
 }