linux/drivers/misc/vmw_vmci
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
..
Kconfig Hoist memcpy_fromiovec/memcpy_toiovec into lib/ 2013-05-20 10:24:22 +09:30
Makefile VMCI: Some header and config files. 2013-01-08 16:15:57 -08:00
vmci_context.c sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h> 2017-03-02 08:42:31 +01:00
vmci_context.h
vmci_datagram.c misc/vmw_vmci: use kmemdup rather than duplicating its implementation 2015-09-20 19:27:58 -07:00
vmci_datagram.h
vmci_doorbell.c VMCI: Doorbell create and destroy fixes 2016-10-28 08:26:21 -04:00
vmci_doorbell.h VMCI: doorbell implementation. 2013-01-08 16:15:55 -08:00
vmci_driver.c VMCI: Resource wildcard match fixed 2018-10-02 15:36:10 -07:00
vmci_driver.h VMCI: Add support for virtual IOMMU 2013-08-27 21:42:12 -07:00
vmci_event.c sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h> 2017-03-02 08:42:38 +01:00
vmci_event.h VMCI: event handling implementation. 2013-01-08 16:15:55 -08:00
vmci_guest.c vmw_vmci: handle the return value from pci_alloc_irq_vectors correctly 2017-03-16 17:32:21 +09:00
vmci_handle_array.c VMCI: handle array implementation. 2013-01-08 16:15:55 -08:00
vmci_handle_array.h VMCI: handle array implementation. 2013-01-08 16:15:55 -08:00
vmci_host.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
vmci_queue_pair.c iov_iter: Separate type from direction and use accessor functions 2018-10-24 00:41:07 +01:00
vmci_queue_pair.h VMCI: Remove non-blocking/pinned queuepair support 2013-08-27 21:42:12 -07:00
vmci_resource.c VMCI: Resource wildcard match fixed 2018-10-02 15:36:10 -07:00
vmci_resource.h VMCI: resource object implementation. 2013-01-08 16:15:56 -08:00
vmci_route.c VMCI: routing implementation. 2013-01-08 16:15:56 -08:00
vmci_route.h VMCI: routing implementation. 2013-01-08 16:15:56 -08:00