linux/drivers/xen
Per Bilse 415dab3c17 drivers/xen/hypervisor: Expose Xen SIF flags to userspace
/proc/xen is a legacy pseudo filesystem which predates Xen support
getting merged into Linux.  It has largely been replaced with more
normal locations for data (/sys/hypervisor/ for info, /dev/xen/ for
user devices).  We want to compile xenfs support out of the dom0 kernel.

There is one item which only exists in /proc/xen, namely
/proc/xen/capabilities with "control_d" being the signal of "you're in
the control domain".  This ultimately comes from the SIF flags provided
at VM start.

This patch exposes all SIF flags in /sys/hypervisor/start_flags/ as
boolean files, one for each bit, returning '1' if set, '0' otherwise.
Two known flags, 'privileged' and 'initdomain', are explicitly named,
and all remaining flags can be accessed via generically named files,
as suggested by Andrew Cooper.

Signed-off-by: Per Bilse <per.bilse@citrix.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20230103130213.2129753-1-per.bilse@citrix.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2023-02-13 06:53:19 +01:00
..
events xen: branch for v6.0-rc1b 2022-08-14 09:28:54 -07:00
xen-pciback xen: make remove callback of xen driver void returned 2022-12-15 16:06:10 +01:00
xenbus xen: branch for v6.0-rc7 2022-09-23 08:31:24 -07:00
xenfs
acpi.c
arm-device.c
balloon.c xen/balloon: don't use PV mode extra memory for zone device allocations 2022-04-07 15:08:37 -05:00
biomerge.c
cpu_hotplug.c
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 x86/xen: Remove undefined behavior in setup_features() 2022-06-21 16:36:11 +02:00
gntalloc.c xen: switch gnttab_end_foreign_access() to take a struct page pointer 2022-05-27 11:05:29 +02:00
gntdev-common.h xen/gntdev: Accommodate VMA splitting 2022-10-06 10:40:21 +02:00
gntdev-dmabuf.c xen/gntdev: Prepare to dynamic dma-buf locking specification 2022-10-18 01:21:47 +03:00
gntdev-dmabuf.h
gntdev.c xen/gntdev: Accommodate VMA splitting 2022-10-06 10:40:21 +02:00
grant-dma-iommu.c xen/grant-dma-iommu: Introduce stub IOMMU driver 2022-06-06 16:07:30 +02:00
grant-dma-ops.c xen/virtio: Handle PCI devices which Host controller is described in DT 2022-12-05 12:59:49 +01:00
grant-table.c xen/grants: prevent integer overflow in gnttab_dma_alloc_pages() 2022-09-02 11:05:19 +02:00
Kconfig xen: Kconfig: Fix spelling mistake "Maxmium" -> "Maximum" 2022-10-12 08:39:50 +02:00
Makefile xen/grant-dma-iommu: Introduce stub IOMMU driver 2022-06-06 16:07:30 +02:00
manage.c xen/manage: Use orderly_reboot() to reboot 2022-08-01 07:42:22 +02:00
mcelog.c
mem-reservation.c x86/xen: remove 32-bit pv leftovers 2021-11-02 08:03:43 -05:00
pci.c xen/pci: Make use of the helper macro LIST_HEAD() 2022-02-10 11:10:23 +01:00
pcpu.c xen/pcpu: fix possible memory leak in register_pcpu() 2022-11-14 13:29:07 +01:00
platform-pci.c xen/platform-pci: use define instead of literal number 2022-11-15 07:34:13 +01:00
privcmd-buf.c
privcmd.c xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource() 2022-12-05 13:54:29 +01:00
privcmd.h
pvcalls-back.c xen: branch for v6.2-rc4 2023-01-12 17:02:20 -06:00
pvcalls-front.c xen/pvcalls: free active map buffer on pvcalls_front_free_map 2023-01-09 08:05:20 +01:00
pvcalls-front.h
swiotlb-xen.c swiotlb-xen: fix DMA_ATTR_NO_KERNEL_MAPPING on arm 2022-05-11 19:48:32 +02:00
sys-hypervisor.c drivers/xen/hypervisor: Expose Xen SIF flags to userspace 2023-02-13 06:53:19 +01:00
time.c x86/paravirt: Switch time pvops functions to use static_call() 2021-03-11 16:17:52 +01:00
unpopulated-alloc.c xen/balloon: don't use PV mode extra memory for zone device allocations 2022-04-07 15:08:37 -05:00
xen-acpi-pad.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
xen-acpi-processor.c xen: Fix implicit type conversion 2021-11-02 07:45:44 -05:00
xen-balloon.c xen: Use DEVICE_ATTR_*() macro 2021-07-05 09:23:31 +02:00
xen-front-pgdir-shbuf.c xen: Fix spelling mistake 2022-08-01 07:42:42 +02:00
xen-scsiback.c xen: make remove callback of xen driver void returned 2022-12-15 16:06:10 +01:00
xlate_mmu.c xen: unexport __init-annotated xen_xlate_map_ballooned_pages() 2022-06-07 08:11:35 +02:00