linux_dsm_epyc7002/drivers/xen
Linus Torvalds 96d4f267e4 Remove 'type' argument from access_ok() function
Nobody has actually used the type (VERIFY_READ vs VERIFY_WRITE) argument
of the user address range verification function since we got rid of the
old racy i386-only code to walk page tables by hand.

It existed because the original 80386 would not honor the write protect
bit when in kernel mode, so you had to do COW by hand before doing any
user access.  But we haven't supported that in a long time, and these
days the 'type' argument is a purely historical artifact.

A discussion about extending 'user_access_begin()' to do the range
checking resulted this patch, because there is no way we're going to
move the old VERIFY_xyz interface to that model.  And it's best done at
the end of the merge window when I've done most of my merges, so let's
just get this done once and for all.

This patch was mostly done with a sed-script, with manual fix-ups for
the cases that weren't of the trivial 'access_ok(VERIFY_xyz' form.

There were a couple of notable cases:

 - csky still had the old "verify_area()" name as an alias.

 - the iter_iov code had magical hardcoded knowledge of the actual
   values of VERIFY_{READ,WRITE} (not that they mattered, since nothing
   really used it)

 - microblaze used the type argument for a debug printout

but other than those oddities this should be a total no-op patch.

I tried to fix up all architectures, did fairly extensive grepping for
access_ok() uses, and the changes are trivial, but I may have missed
something.  Any missed conversion should be trivially fixable, though.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-03 18:57:57 -08:00
..
events mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
xen-pciback xen/pciback: Check dev_data before using it 2018-12-17 10:29:50 -05:00
xenbus xen: drop writing error messages to xenstore 2018-10-26 09:17:16 +02:00
xenfs
acpi.c
arm-device.c
balloon.c mm/memory_hotplug: drop "online" parameter from add_memory_resource() 2018-12-28 12:11:48 -08:00
biomerge.c
cpu_hotplug.c
dbgp.c
efi.c
evtchn.c
fallback.c
features.c
gntalloc.c
gntdev-common.h
gntdev-dmabuf.c
gntdev-dmabuf.h
gntdev.c mm/mmu_notifier: use structure for invalidate_range_start/end callback 2018-12-28 12:11:50 -08:00
grant-table.c xen: fixes for 4.20-rc2 2018-11-10 08:58:48 -06:00
Kconfig xen: Introduce shared buffer helpers for page directory... 2018-12-18 12:15:55 -05:00
Makefile xen: Introduce shared buffer helpers for page directory... 2018-12-18 12:15:55 -05:00
manage.c
mcelog.c
mem-reservation.c
pci.c
pcpu.c
platform-pci.c
preempt.c
privcmd-buf.c xen: remove size limit of privcmd-buf mapping interface 2018-11-09 16:38:34 +01:00
privcmd.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
privcmd.h
pvcalls-back.c iov_iter: Separate type from direction and use accessor functions 2018-10-24 00:41:07 +01:00
pvcalls-front.c pvcalls-front: fixes incorrect error handling 2018-11-29 17:53:33 +01:00
pvcalls-front.h
swiotlb-xen.c swiotlb: remove dma_mark_clean 2018-12-13 21:06:14 +01:00
sys-hypervisor.c
time.c
tmem.c
xen-acpi-cpuhotplug.c
xen-acpi-memhotplug.c
xen-acpi-pad.c
xen-acpi-processor.c
xen-balloon.c xen/balloon: Support xend-based toolstack 2018-10-24 10:18:47 +02:00
xen-front-pgdir-shbuf.c xen: Introduce shared buffer helpers for page directory... 2018-12-18 12:15:55 -05:00
xen-scsiback.c scsi: target: replace fabric_ops.name with fabric_alias 2018-11-28 18:50:59 -05:00
xen-selfballoon.c mm: convert totalram_pages and totalhigh_pages variables to atomic 2018-12-28 12:11:47 -08:00
xen-stub.c
xlate_mmu.c xen: xlate_mmu: add missing header to fix 'W=1' warning 2018-11-29 17:53:27 +01:00