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OpenCloudOS-Kernel/drivers/xen
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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 Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
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
acpi.c
…
arm-device.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
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 treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
efi.c xen/efi: have a common runtime setup function 2019-10-02 10:31:07 -04:00
evtchn.c xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices 2021-02-23 10:07:52 -06:00
features.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
gntalloc.c
…
gntdev-common.h xen: Use evtchn_type_t as a type for event channels 2020-04-07 12:12:54 +02:00
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
manage.c xen/manage: Fix fall-through warnings for Clang 2020-12-16 07:58:44 +01:00
mcelog.c xen/mcelog: add PPIN to record when available 2019-11-14 10:01:57 +01:00
mem-reservation.c
…
pci.c xen/pci: reserve MCFG areas earlier 2019-09-12 15:02:55 -04:00
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 xen/privcmd-buf.c: convert to use vm_map_pages_zero() 2019-05-14 09:47:50 -07:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
xen-acpi-processor.c xen: Replace lkml.org links with lore 2021-02-23 10:08:07 -06:00
xen-balloon.c xen/balloon: Support xend-based toolstack take two 2020-01-22 08:58:16 -06:00
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