linux-toradex.git/drivers/misc/vmw_vmci/vmci_queue_pair.c, branch v4.5

VMCI: Guard against overflow in queue pair allocation

2015-03-25T10:32:15+00:00

The current maximum size of a queue in a queue pair is 128 MB. If
we increase that in the future, the queue pair allocation routines
may run into overflow issues. This change adds additional checks
to guard against this.

Acked-by: Andy King 
Reported-by: Dan Carpenter 
Signed-off-by: Jorgen Hansen 
Signed-off-by: Greg Kroah-Hartman

drivers/vmw_vmci: Show correct get_user_pages_fast upon failure

2015-03-25T10:32:15+00:00

As of 240ddd495a9 (vmw_vmci: Convert driver to use get_user_pages_fast())
we no longer user get_user_pages(), thus update the warning.

Also convert to pr_debug, which is a more appropriate level of logging.

Signed-off-by: Davidlohr Bueso 
Signed-off-by: Greg Kroah-Hartman

vmci: propagate msghdr all way down to __qp_memcpy_to_queue()

2015-02-04T06:34:14+00:00

Switch from passing msg->iov_iter.iov to passing msg itself

Signed-off-by: Al Viro

vmci: propagate msghdr all way down to __qp_memcpy_from_queue()

2014-12-09T21:28:23+00:00

... and switch it to memcpy_to_msg()

Signed-off-by: Al Viro

vmw_vmci: Convert driver to use get_user_pages_fast()

2013-10-06T01:04:55+00:00

Convert vmci_host_setup_notify() and qp_host_get_user_memory() to use
get_user_pages_fast() instead of get_user_pages(). Note that
qp_host_get_user_memory() was using mmap_sem for writing without an
apparent reason.

CC: Arnd Bergmann 
Signed-off-by: Jan Kara 
Signed-off-by: Greg Kroah-Hartman

VMCI: Add support for virtual IOMMU

2013-08-28T04:42:12+00:00

This patch adds support for virtual IOMMU to the vmci module.  We switch
to DMA consistent mappings for guest queuepair and doorbell pages that
are passed to the device.  We still allocate each page individually,
since there's no guarantee that we'll get a contiguous block of physical
for an entire queuepair (especially since we allow up to 128 MiB!).

Also made the split between guest and host in the kernelIf struct much
clearer.  Now it's obvious which fields are which.

Acked-by: George Zhang 
Acked-by: Aditya Sarwade 
Signed-off-by: Andy King 
Signed-off-by: Greg Kroah-Hartman

VMCI: Remove non-blocking/pinned queuepair support

2013-08-28T04:42:12+00:00

We added this for a special case that doesn't exist on Linux.  Remove
the non-blocking/pinned queuepair code and simplify the driver in
preparation for adding virtual IOMMU support.

Acked-by: Aditya Sarwade 
Signed-off-by: Andy King 
Signed-off-by: Greg Kroah-Hartman

Hoist memcpy_fromiovec/memcpy_toiovec into lib/

2013-05-20T00:54:22+00:00

ERROR: "memcpy_fromiovec" [drivers/vhost/vhost_scsi.ko] undefined!

That function is only present with CONFIG_NET.  Turns out that
crypto/algif_skcipher.c also uses that outside net, but it actually
needs sockets anyway.

In addition, commit 6d4f0139d642c45411a47879325891ce2a7c164a added
CONFIG_NET dependency to CONFIG_VMCI for memcpy_toiovec, so hoist
that function and revert that commit too.

socket.h already includes uio.h, so no callers need updating; trying
only broke things fo x86_64 randconfig (thanks Fengguang!).

Reported-by: Randy Dunlap 
Acked-by: David S. Miller 
Acked-by: Michael S. Tsirkin 
Signed-off-by: Rusty Russell

drivers, vmci: Fix build error

2013-01-25T20:22:46+00:00

We can't rely on vmalloc.h being included by other included files because
under some configs it is possible for the build to fail:

drivers/misc/vmw_vmci/vmci_queue_pair.c: In function 'qp_free_queue':
drivers/misc/vmw_vmci/vmci_queue_pair.c:270: error: implicit declaration of function 'vunmap'
drivers/misc/vmw_vmci/vmci_queue_pair.c:277: error: implicit declaration of function 'vfree'
drivers/misc/vmw_vmci/vmci_queue_pair.c: In function 'qp_alloc_queue':
drivers/misc/vmw_vmci/vmci_queue_pair.c:302: error: implicit declaration of function 'vmalloc'
drivers/misc/vmw_vmci/vmci_queue_pair.c:302: warning: assignment makes pointer from integer without a cast
drivers/misc/vmw_vmci/vmci_queue_pair.c:324: error: implicit declaration of function 'vmap'
drivers/misc/vmw_vmci/vmci_queue_pair.c:324: error: 'VM_MAP' undeclared (first use in this function)
drivers/misc/vmw_vmci/vmci_queue_pair.c:324: error: (Each undeclared identifier is reported only once
drivers/misc/vmw_vmci/vmci_queue_pair.c:324: error: for each function it appears in.)
drivers/misc/vmw_vmci/vmci_queue_pair.c: In function 'qp_host_map_queues':
drivers/misc/vmw_vmci/vmci_queue_pair.c:843: error: 'VM_MAP' undeclared (first use in this function)

Fix the build by directly including vmalloc.h.

Signed-off-by: David Rientjes 
Cc: George Zhang 
Cc: Andy King 
Cc: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

VMCI: rename PPNset to ppn_set to avoid camel case

2013-01-17T20:07:39+00:00

Acked-by: Andy King 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman