Commit 326cd9e54e for qemu.org
commit 326cd9e54ef190a705f813d16fa49b9f9e42bf21
Author: Yuan Wang <yuan1.wang@intel.com>
Date: Mon Sep 28 16:42:26 2026 +0800
vfio/igd: Update igd-assign.txt for Intel MTL and newer platforms
Update the igd-assign.txt documentation to reflect the addition of
the 0006 patch in the ECI repository. This patch is required to
enable support for Meteor Lake (MTL) and subsequent Intel platforms.
Starting from MTL, the hardware-accessible BDSM (Base of Data Stolen
Memory) register in the PCI configuration space has been removed.
Instead, IGD devices now access stolen memory via MMIO BAR2 (LMEMBAR).
Consequently, guest firmware no longer needs to program the legacy
BDSM register.
Reviewed-by: Bosheng Xue <bosheng.xue@intel.com>
Signed-off-by: Yuan Wang <yuan1.wang@intel.com>
Link: https://lore.kernel.org/qemu-devel/20260928084226.3537126-1-yuan1.wang@intel.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
diff --git a/docs/igd-assign.txt b/docs/igd-assign.txt
index e54040335b..b9abfdbac3 100644
--- a/docs/igd-assign.txt
+++ b/docs/igd-assign.txt
@@ -263,6 +263,6 @@ Footnotes
[2] # echo "vfio-pci" > /sys/bus/pci/devices/0000:00:02.0/driver_override
[3] https://web.archive.org/web/20240827012422/https://bugzilla.tianocore.org/show_bug.cgi?id=935
Tianocore bugzilla was down since Jan 2025 :(
-[4] https://eci.intel.com/docs/3.3/components/kvm-hypervisor.html, Patch 0001-0004
+[4] https://eci.intel.com/docs/3.3/components/kvm-hypervisor.html, Patch 0001-0004, 0006
[5] https://github.com/tomitamoeko/VfioIgdPkg
[6] https://winraid.level1techs.com/t/tool-guide-news-uefi-bios-updater-ubu/30357