From b539eeffc737d859dd1814c2e529e0ed0feba7a7 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Thu, 14 May 2020 07:53:55 +0200 Subject: [PATCH] x86/PVH: PHYSDEVOP_pci_mmcfg_reserved should not blindly register a region MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The op has a "is reserved" flag, and hence registration shouldn't happen unilaterally. Fixes: eb3dd90e4089 ("x86/physdev: enable PHYSDEVOP_pci_mmcfg_reserved for PVH Dom0") Signed-off-by: Jan Beulich Reviewed-by: Roger Pau Monné --- xen/arch/x86/physdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/x86/physdev.c b/xen/arch/x86/physdev.c index 3a3c15890b..23465bcd00 100644 --- a/xen/arch/x86/physdev.c +++ b/xen/arch/x86/physdev.c @@ -556,7 +556,7 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) ret = pci_mmcfg_reserved(info.address, info.segment, info.start_bus, info.end_bus, info.flags); - if ( !ret && has_vpci(currd) ) + if ( !ret && has_vpci(currd) && (info.flags & XEN_PCI_MMCFG_RESERVED) ) { /* * For HVM (PVH) domains try to add the newly found MMCFG to the -- 2.30.2