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Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus b
From: |
Alexey Kardashevskiy |
Subject: |
Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default |
Date: |
Sat, 3 Dec 2016 12:02:16 +1100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 |
On 03/12/16 08:41, Benjamin Herrenschmidt wrote:
> On Fri, 2016-12-02 at 16:50 +1100, David Gibson wrote:
>>
>> Uh.. I don't entirely follow you. From the host point of view there
>> are multiple iommu groups (PEs), but from the guest point of view
>> there's only one. On the guest side iommu granularity is always
>> per-vPHB.
>
> Ok so the H_PUT_TCE calls affect all the underlying tables ?
Yes, it updates all hardware tables attached to the same guest's LIOBN
(which in reality can only be seen on power7 as power8 shares tables
between PEs).
--
Alexey
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, David Gibson, 2016/12/01
- Re: [Qemu-ppc] [libvirt] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Laine Stump, 2016/12/05
- Re: [Qemu-ppc] [libvirt] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Laine Stump, 2016/12/05
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Andrea Bolognani, 2016/12/06
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, David Gibson, 2016/12/06
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Andrea Bolognani, 2016/12/07
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Marcel Apfelbaum, 2016/12/13
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Greg Kurz, 2016/12/13
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, Benjamin Herrenschmidt, 2016/12/13
- Re: [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default, David Gibson, 2016/12/13