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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Dec 2024 16:25:52.2290 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6f5fcdc2-dd1b-49cb-d6fd-08dd193750ae X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EE3E.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8134 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1733847996603116600 Content-Type: text/plain; charset="utf-8" Currently, if bar->type is anything other than VPCI_BAR_MEM32, the memory type bits get set to PCI_BASE_ADDRESS_MEM_TYPE_64 in the returned value. This leads to the wrong memory type for, e.g. VPCI_BAR_EMPTY. Only set PCI_BASE_ADDRESS_MEM_TYPE_64 when the bar type is VPCI_BAR_MEM64_LO. Fixes: 8c5bca70742c ("vpci/header: implement guest BAR register handlers") Signed-off-by: Stewart Hildebrand --- xen/drivers/vpci/header.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/xen/drivers/vpci/header.c b/xen/drivers/vpci/header.c index ef6c965c081c..493ca5de032d 100644 --- a/xen/drivers/vpci/header.c +++ b/xen/drivers/vpci/header.c @@ -668,8 +668,10 @@ static uint32_t cf_check guest_mem_bar_read(const stru= ct pci_dev *pdev, } =20 reg_val =3D bar->guest_addr; - reg_val |=3D bar->type =3D=3D VPCI_BAR_MEM32 ? PCI_BASE_ADDRESS_MEM_TY= PE_32 : - PCI_BASE_ADDRESS_MEM_TYPE_64; + if ( bar->type =3D=3D VPCI_BAR_MEM32 ) + reg_val |=3D PCI_BASE_ADDRESS_MEM_TYPE_32; + else if ( bar->type =3D=3D VPCI_BAR_MEM64_LO ) + reg_val |=3D PCI_BASE_ADDRESS_MEM_TYPE_64; reg_val |=3D bar->prefetchable ? PCI_BASE_ADDRESS_MEM_PREFETCH : 0; =20 return reg_val; base-commit: 1645bb7997cb1eccb45235ab350872733c74b305 --=20 2.47.1