Re: [Xen-devel] [PATCH v3 0/4] x86/iommu: PVH Dom0 workarounds for missing RMRR entries

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 16.08.18 at 18:43, <tamas.k.lengyel@xxxxxxxxx> wrote:
> Booting just linux with both options works just fine, I grepped the
> dmesg log for the device that causes the issues with Xen but there are
> no errors in the log:

Well, this as well as ...

> I double checked and the option is set properly but I'm still getting
> the same non-present entry faults as before. At the moment I don't
> have serial access so not sure how to verify that the option took
> effect. This is my boot info:
> 
> [pvh]
> options=loglvl=all guest_loglvl=all dom0_mem=4096M,max:4096M
> dom0_max_vcpus=2 sched=null dom0=pvh iommu=required,debug
> dom0-iommu=relaxed console=vga
> rmrr=0x5f48385=0:0:2.0,0x216183=0:0:2.0,0x70b6d19=0:0:2.0
> kernel=vmlinuz-4.18.0-rc8 root=/dev/mapper/ubuntu--vg-root ro quiet
> splash vt.handoff=1
> ramdisk=initrd.img-4.18.0-rc8

... this (option looks fine to me) suggest that some debugging is
going to be on order on that system, which I understand will be
at least difficult without serial console.

Jan



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