[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v2] x86/PVH: PHYSDEVOP_pci_mmcfg_reserved should not blindly register a region
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 <jbeulich@xxxxxxxx> --- v2: Don't treat XEN_PCI_MMCFG_RESERVED clear as an unregistration request. --- a/xen/arch/x86/physdev.c +++ b/xen/arch/x86/physdev.c @@ -557,7 +557,7 @@ ret_t do_physdev_op(int cmd, XEN_GUEST_H 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
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