Alex Williamson 76d83bfc11 vfio/pci: Virtualize Maximum Payload Size ... [ Upstream commit 523184972b ] With virtual PCI-Express chipsets, we now see userspace/guest drivers trying to match the physical MPS setting to a virtual downstream port. Of course a lone physical device surrounded by virtual interconnects cannot make a correct decision for a proper MPS setting. Instead, let's virtualize the MPS control register so that writes through to hardware are disallowed. Userspace drivers like QEMU assume they can write anything to the device and we'll filter out anything dangerous. Since mismatched MPS can lead to AER and other faults, let's add it to the kernel side rather than relying on userspace virtualization to handle it. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-12-25 14:23:45 +01:00
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pci	vfio/pci: Virtualize Maximum Payload Size	2017-12-25 14:23:45 +01:00
platform	vfio: platform: mark symbols static where possible	2016-09-13 16:11:37 -06:00
Kconfig	vfio: Include No-IOMMU mode	2015-12-21 15:28:11 -07:00
Makefile	vfio: Split virqfd into a separate module for vfio bus drivers	2015-03-17 08:33:38 -06:00
vfio.c	vfio: New external user group/file match	2017-07-27 15:08:03 -07:00
vfio_iommu_spapr_tce.c	vfio/spapr: Fix missing mutex unlock when creating a window	2017-12-09 22:01:54 +01:00
vfio_iommu_type1.c	vfio/type1: Remove locked page accounting workqueue	2017-05-20 14:28:38 +02:00
vfio_spapr_eeh.c	drivers/vfio: Support EEH error injection	2015-05-12 20:33:35 +10:00
virqfd.c	vfio: Split virqfd into a separate module for vfio bus drivers	2015-03-17 08:33:38 -06:00