Re: [PATCH 0/4] vfio-pci/zdev: Fixing s390 vfio-pci ISM support

2021-01-20 Thread Matthew Rosato
On 1/20/21 4:02 AM, Pierre Morel wrote: On 1/19/21 9:02 PM, Matthew Rosato wrote: Today, ISM devices are completely disallowed for vfio-pci passthrough as QEMU will reject the device due to an (inappropriate) MSI-X check. However, in an effort to enable ISM device passthrough, I realized that

Re: [PATCH 0/4] vfio-pci/zdev: Fixing s390 vfio-pci ISM support

2021-01-20 Thread Pierre Morel
On 1/19/21 9:02 PM, Matthew Rosato wrote: Today, ISM devices are completely disallowed for vfio-pci passthrough as QEMU will reject the device due to an (inappropriate) MSI-X check. However, in an effort to enable ISM device passthrough, I realized that the manner in which ISM performs block w

Re: [PATCH 0/4] vfio-pci/zdev: Fixing s390 vfio-pci ISM support

2021-01-19 Thread Matthew Rosato
On 1/19/21 3:02 PM, Matthew Rosato wrote: Today, ISM devices are completely disallowed for vfio-pci passthrough as QEMU will reject the device due to an (inappropriate) MSI-X check. However, in an effort to enable ISM device passthrough, I realized that the manner in which ISM performs block writ

[PATCH 0/4] vfio-pci/zdev: Fixing s390 vfio-pci ISM support

2021-01-19 Thread Matthew Rosato
Today, ISM devices are completely disallowed for vfio-pci passthrough as QEMU will reject the device due to an (inappropriate) MSI-X check. However, in an effort to enable ISM device passthrough, I realized that the manner in which ISM performs block write operations is highly incompatible with the