|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2 3/3] OvmfPkg/XenSupport: turn off address decoding before BAR sizing
On 11/04/2019 14:19, Andrew Cooper wrote: > On 09/04/2019 04:12, Igor Druzhinin wrote: >> On Xen, hvmloader firmware leaves address decoding enabled for >> enumerated PCI device before jumping into OVMF. OVMF seems to >> expect it to be disabled and tries to size PCI BARs in several places >> without disabling it which causes BAR64, for example, being >> incorrectly placed by QEMU. >> >> Fix it by disabling PCI address decoding explicitly before the >> first attempt to size BARs on Xen. > > This is an HVMLoader bug, surely? I'll try to turn it off in HVMLoader but I'm not sure other BIOSes would like it. Although they should not make any assumptions on whether memory decoding is enabled or not (so as OVMF - hence this patch) it's still risky from my point of view. Igor _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |