Commit 235d9fc581 for qemu.org
commit 235d9fc58103e2a5605d621b320b81f9d656388a
Author: Sairaj Kodilkar <sarunkod@amd.com>
Date: Fri Aug 7 11:42:49 2026 +0530
amd_iommu: acpi-build: Remove unsupported PPR and HE feature
AMD IOMMU does not support ppr and hardware error registers. Hence do not
publish these features to guest through extended feature MMIO register
and IVHD 10h flags field.
Signed-off-by: Sairaj Kodilkar <sarunkod@amd.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260807061250.27739-7-sarunkod@amd.com>
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 7bf3858b63..6d7308b4e4 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1938,8 +1938,7 @@ build_amd_iommu(GArray *table_data, BIOSLinker *linker, const char *oem_id,
build_append_int_noprefix(table_data,
(1UL << 0) | /* HtTunEn */
(1UL << 4) | /* iotblSup */
- (1UL << 6) | /* PrefSup */
- (1UL << 7), /* PPRSup */
+ (1UL << 6), /* PrefSup */
1);
/* IVHD length */
diff --git a/hw/i386/amd_iommu.h b/hw/i386/amd_iommu.h
index 319db18618..c5b346cc35 100644
--- a/hw/i386/amd_iommu.h
+++ b/hw/i386/amd_iommu.h
@@ -227,9 +227,8 @@
/* default extended feature */
#define AMDVI_DEFAULT_EXT_FEATURES \
- (AMDVI_FEATURE_PREFETCH | AMDVI_FEATURE_PPR | \
- AMDVI_FEATURE_IA | AMDVI_FEATURE_GT | AMDVI_FEATURE_HE | \
- AMDVI_GATS_MODE | AMDVI_HATS_MODE | AMDVI_FEATURE_GA)
+ (AMDVI_FEATURE_PREFETCH | AMDVI_FEATURE_IA | AMDVI_FEATURE_GT | \
+ AMDVI_GATS_MODE | AMDVI_HATS_MODE | AMDVI_FEATURE_GA)
/* capabilities header */
#define AMDVI_CAPAB_FEATURES (AMDVI_CAPAB_FLAT_EXT | \