Re: [Qemu-devel] [PATCH] spapr_pci: allow control of BAR alignment through SLOF

2017-03-01 Thread Michael Roth
Quoting David Gibson (2017-02-28 20:56:44) > On Tue, Feb 28, 2017 at 06:56:47PM -0600, Michael Roth wrote: > > In certain cases, such as PCI-passthrough with VFIO, we cannot offload > > MMIO accesses to KVM unless the BAR alignment matches the host. This > > patch, in conjunction with a separately

Re: [Qemu-devel] [PATCH] spapr_pci: allow control of BAR alignment through SLOF

2017-02-28 Thread David Gibson
On Tue, Feb 28, 2017 at 06:56:47PM -0600, Michael Roth wrote: > In certain cases, such as PCI-passthrough with VFIO, we cannot offload > MMIO accesses to KVM unless the BAR alignment matches the host. This > patch, in conjunction with a separately submitted patch for SLOF > which allows for control

[Qemu-devel] [PATCH] spapr_pci: allow control of BAR alignment through SLOF

2017-02-28 Thread Michael Roth
In certain cases, such as PCI-passthrough with VFIO, we cannot offload MMIO accesses to KVM unless the BAR alignment matches the host. This patch, in conjunction with a separately submitted patch for SLOF which allows for control of this via the device-tree, allows us to set this alignment via QEMU