linux/drivers/xen
Stefano Stabellini 97729b653d xen/swiotlb: check if the swiotlb has already been initialized
xen_swiotlb_init calls swiotlb_late_init_with_tbl, which fails with
-ENOMEM if the swiotlb has already been initialized.

Add an explicit check io_tlb_default_mem != NULL at the beginning of
xen_swiotlb_init. If the swiotlb is already initialized print a warning
and return -EEXIST.

On x86, the error propagates.

On ARM, we don't actually need a special swiotlb buffer (yet), any
buffer would do. So ignore the error and continue.

CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
Reviewed-by: Boris Ostrovsky <boris.ostrvsky@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210512201823.1963-3-sstabellini@kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
2021-05-14 15:52:11 +02:00
..
events xen/evtchn: Change irq_info lock to raw_spinlock_t 2021-04-07 08:33:28 -05:00
xen-pciback xen-pciback: simplify vpci's find hook 2021-04-23 09:53:24 +02:00
xenbus xen/events: add per-xenbus device event statistics and settings 2021-02-23 10:07:11 -06:00
xenfs
acpi.c
arm-device.c
balloon.c mm/memory_hotplug: MEMHP_MERGE_RESOURCE -> MHP_MERGE_RESOURCE 2021-02-26 09:41:00 -08:00
biomerge.c
cpu_hotplug.c xen/cpuhotplug: Fix initial CPU offlining for PV(H) guests 2020-05-21 13:01:45 -05:00
dbgp.c
efi.c
evtchn.c xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices 2021-02-23 10:07:52 -06:00
features.c
gntalloc.c
gntdev-common.h
gntdev-dmabuf.c xen: gntdev: fix common struct sg_table related issues 2020-09-10 08:18:35 +02:00
gntdev-dmabuf.h
gntdev.c xen/gntdev: fix gntdev_mmap() error exit path 2021-05-10 09:32:00 +02:00
grant-table.c xen: don't use page->lru for ZONE_DEVICE memory 2020-12-09 10:31:41 +01:00
Kconfig xen: Remove support for PV ACPI cpu/memory hotplug 2021-04-23 09:31:50 +02:00
Makefile xen: Remove support for PV ACPI cpu/memory hotplug 2021-04-23 09:31:50 +02:00
manage.c xen/manage: Fix fall-through warnings for Clang 2020-12-16 07:58:44 +01:00
mcelog.c
mem-reservation.c
pci.c
pcpu.c xen: Remove support for PV ACPI cpu/memory hotplug 2021-04-23 09:31:50 +02:00
platform-pci.c xen: Set platform PCI device INTX affinity to CPU0 2021-01-13 16:12:03 +01:00
privcmd-buf.c
privcmd.c xen/privcmd: allow fetching resource sizes 2021-01-13 12:31:17 +01:00
privcmd.h
pvcalls-back.c xen/events: link interdomain events to associated xenbus device 2021-02-11 14:47:00 -08:00
pvcalls-front.c xen: remove redundant initialization of variable ret 2020-10-04 18:41:33 -05:00
pvcalls-front.h
swiotlb-xen.c xen/swiotlb: check if the swiotlb has already been initialized 2021-05-14 15:52:11 +02:00
sys-hypervisor.c
time.c x86/paravirt: Switch time pvops functions to use static_call() 2021-03-11 16:17:52 +01:00
unpopulated-alloc.c xen/unpopulated-alloc: fix error return code in fill_list() 2021-05-10 09:42:25 +02:00
xen-acpi-pad.c
xen-acpi-processor.c xen: Replace lkml.org links with lore 2021-02-23 10:08:07 -06:00
xen-balloon.c
xen-front-pgdir-shbuf.c xen-front-pgdir-shbuf: don't record wrong grant handle upon error 2021-02-23 12:35:43 -06:00
xen-scsiback.c scsi: target: core: Add gfp_t arg to target_cmd_init_cdb() 2021-03-04 17:37:02 -05:00
xlate_mmu.c xen: add helpers to allocate unpopulated memory 2020-09-04 10:00:01 +02:00