wireguard-linux/drivers/vfio, branch jd/orphan-parallel

Merge tag 'vfio-v5.10-rc1' of git://github.com/awilliam/linux-vfio

2020-10-22T20:00:44Z

Pull VFIO updates from Alex Williamson: - New fsl-mc vfio bus driver supporting userspace drivers of objects within NXP's DPAA2 architecture (Diana Craciun) - Support for exposing zPCI information on s390 (Matthew Rosato) - Fixes for "detached" VFs on s390 (Matthew Rosato) - Fixes for pin-pages and dma-rw accesses (Yan Zhao) - Cleanups and optimize vconfig regen (Zenghui Yu) - Fix duplicate irq-bypass token registration (Alex Williamson) * tag 'vfio-v5.10-rc1' of git://github.com/awilliam/linux-vfio: (30 commits) vfio iommu type1: Fix memory leak in vfio_iommu_type1_pin_pages vfio/pci: Clear token on bypass registration failure vfio/fsl-mc: fix the return of the uninitialized variable ret vfio/fsl-mc: Fix the dead code in vfio_fsl_mc_set_irq_trigger vfio/fsl-mc: Fixed vfio-fsl-mc driver compilation on 32 bit MAINTAINERS: Add entry for s390 vfio-pci vfio-pci/zdev: Add zPCI capabilities to VFIO_DEVICE_GET_INFO vfio/fsl-mc: Add support for device reset vfio/fsl-mc: Add read/write support for fsl-mc devices vfio/fsl-mc: trigger an interrupt via eventfd vfio/fsl-mc: Add irq infrastructure for fsl-mc devices vfio/fsl-mc: Added lock support in preparation for interrupt handling vfio/fsl-mc: Allow userspace to MMAP fsl-mc device MMIO regions vfio/fsl-mc: Implement VFIO_DEVICE_GET_REGION_INFO ioctl call vfio/fsl-mc: Implement VFIO_DEVICE_GET_INFO ioctl vfio/fsl-mc: Scan DPRC objects on vfio-fsl-mc driver bind vfio: Introduce capability definitions for VFIO_DEVICE_GET_INFO s390/pci: track whether util_str is valid in the zpci_dev s390/pci: stash version in the zpci_dev vfio/fsl-mc: Add VFIO framework skeleton for fsl-mc devices ...

vfio iommu type1: Fix memory leak in vfio_iommu_type1_pin_pages

2020-10-20T16:12:17Z

pfn is not added to pfn_list when vfio_add_to_pfn_list fails. vfio_unpin_page_external will exit directly without calling vfio_iova_put_vfio_pfn. This will lead to a memory leak. Fixes: a54eb55045ae ("vfio iommu type1: Add support for mediated devices") Signed-off-by: Xiaoyang Xu [aw: simplified logic, add Fixes] Signed-off-by: Alex Williamson

vfio/pci: Clear token on bypass registration failure

2020-10-19T13:13:55Z

The eventfd context is used as our irqbypass token, therefore if an eventfd is re-used, our token is the same. The irqbypass code will return an -EBUSY in this case, but we'll still attempt to unregister the producer, where if that duplicate token still exists, results in removing the wrong object. Clear the token of failed producers so that they harmlessly fall out when unregistered. Fixes: 6d7425f109d2 ("vfio: Register/unregister irq_bypass_producer") Reported-by: guomin chen Tested-by: guomin chen Signed-off-by: Alex Williamson

vfio/fsl-mc: fix the return of the uninitialized variable ret

2020-10-19T13:09:41Z

The vfio_fsl_mc_reflck_attach function may return, on success path, an uninitialized variable. Fix the problem by initializing the return variable to 0. Addresses-Coverity: ("Uninitialized scalar variable") Fixes: f2ba7e8c947b ("vfio/fsl-mc: Added lock support in preparation for interrupt handling") Reported-by: Colin Ian King Signed-off-by: Diana Craciun Signed-off-by: Alex Williamson

mm: remove the now-unnecessary mmget_still_valid() hack

2020-10-16T18:11:22Z

The preceding patches have ensured that core dumping properly takes the mmap_lock. Thanks to that, we can now remove mmget_still_valid() and all its users. Signed-off-by: Jann Horn Signed-off-by: Andrew Morton Acked-by: Linus Torvalds Cc: Christoph Hellwig Cc: Alexander Viro Cc: "Eric W . Biederman" Cc: Oleg Nesterov Cc: Hugh Dickins Link: http://lkml.kernel.org/r/20200827114932.3572699-8-jannh@google.com Signed-off-by: Linus Torvalds

vfio/fsl-mc: Fix the dead code in vfio_fsl_mc_set_irq_trigger

2020-10-15T18:46:08Z

Static analysis discovered that some code in vfio_fsl_mc_set_irq_trigger is dead code. Fixed the code by changing the conditions order. Fixes: cc0ee20bd969 ("vfio/fsl-mc: trigger an interrupt via eventfd") Reported-by: Colin Ian King Signed-off-by: Diana Craciun Signed-off-by: Alex Williamson

vfio/fsl-mc: Fixed vfio-fsl-mc driver compilation on 32 bit

2020-10-13T17:12:29Z

The FSL_MC_BUS on which the VFIO-FSL-MC driver is dependent on can be compiled on other architectures as well (not only ARM64) including 32 bit architectures. Include linux/io-64-nonatomic-hi-lo.h to make writeq/readq used in the driver available on 32bit platforms. Signed-off-by: Diana Craciun Signed-off-by: Alex Williamson

Merge branches 'v5.10/vfio/fsl-mc-v6' and 'v5.10/vfio/zpci-info-v3' into v5.10/vfio/next

2020-10-12T17:41:02Z

vfio-pci/zdev: Add zPCI capabilities to VFIO_DEVICE_GET_INFO

2020-10-12T17:37:59Z

Define a new configuration entry VFIO_PCI_ZDEV for VFIO/PCI. When this s390-only feature is configured we add capabilities to the VFIO_DEVICE_GET_INFO ioctl that describe features of the associated zPCI device and its underlying hardware. This patch is based on work previously done by Pierre Morel. Signed-off-by: Matthew Rosato Reviewed-by: Cornelia Huck Signed-off-by: Alex Williamson

vfio/fsl-mc: Add support for device reset

2020-10-12T17:33:48Z

Currently only resetting the DPRC container is supported which will reset all the objects inside it. Resetting individual objects is possible from the userspace by issueing commands towards MC firmware. Signed-off-by: Diana Craciun Reviewed-by: Eric Auger Signed-off-by: Alex Williamson