diff --git a/changelog.md b/changelog.md
index af80d9f..dc92915 100644
--- a/changelog.md
+++ b/changelog.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+* Bundle `qboot.rom` in the `qemu-system-x86_64` tarball. qboot is the firmware
+  for QEMU's `microvm` machine type, and the only one that can boot a PVH kernel
+  there, which is how a guest skips the boot loader, the PCI bus and ACPI
+  entirely
+  ([cross-platform-actions/action#151](https://github.com/cross-platform-actions/action/issues/151))
+
 ### Removed
 
 * Stop bundling the Linaro UEFI firmware for ARM64. `linaro_uefi.fd` is no
diff --git a/ci.rb b/ci.rb
index 4680e7e..cdbf516 100755
--- a/ci.rb
+++ b/ci.rb
@@ -77,11 +77,18 @@ def bundle_firmware
   end
 
   class X86_64 < Architecture
+    # qboot.rom is the firmware for the `microvm` machine type, and the only one
+    # that can boot a PVH kernel there: QEMU hands the kernel to the firmware
+    # through fw_cfg rather than entering it itself, and qboot is also what
+    # leaves an MP table behind for a guest configured without ACPI. Given
+    # bios-256k.bin instead, such a guest never starts and says nothing at all
+    # about why.
     FIRMWARES = %w[
       bios-256k.bin
       efi-e1000.rom
       efi-virtio.rom
       kvmvapic.bin
+      qboot.rom
       vgabios-stdvga.bin
     ].freeze
 
diff --git a/test.rb b/test.rb
index d3c74e3..6645cd3 100755
--- a/test.rb
+++ b/test.rb
@@ -62,6 +62,7 @@ def assert_statically_linked(architecture)
           efi-e1000.rom
           efi-virtio.rom
           kvmvapic.bin
+          qboot.rom
           vgabios-stdvga.bin
           uefi.fd
         ]