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Kind value can be passed to API nvgpu_vm_map() from User
space (through IOCTL NVGPU_AS_IOCTL_MAP_BUFFER_EX)
But kind value is not checked for sane values
before storing it in bfr.kind_v
And then we use this kind value as array index
in gk20a_kind_is_supported() which is incorrect
Fix this by ensuring in nvgpu_vm_map() that the
kind value is well within range
Bug 200291879
Coverity id : 2567923
Coverity id : 2567924
Change-Id: Ic57395018727cbd2260c929581db256e427316c6
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1496597
GVS: Gerrit_Virtual_Submit
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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In nvgpu_vm_map(), variable "inserted" can never be
true in error path
Hence remove the logically dead code
Bug 200291879
Coverity id : 2567920
Change-Id: I5428f7d52f1d4f815c04d90ea651668dd72ba985
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1495906
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
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nvgpu_log/info/warn/err() internally add a \n to the end of the message.
Hence, callers should not include a \n at the end of the message. Doing
so results in duplicate \n being printed, which ends up creating empty
log messages. Remove the duplicate \n from all err/warn messages.
Bug 1928311
Change-Id: I99362c5327f36146f28ba63d4e68181589735c39
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-on: http://git-master/r/1487232
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
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This function is an internal function to the VM manager that allocates
virtual memory space in the GVA allocator. It is unfortunately used in
the vGPU code, though. In any event, this patch cleans up and moves the
implementation of these functions into the VM common code.
JIRA NVGPU-12
JIRA NVGPU-30
Change-Id: I24a3d29b5fcb12615df27d2ac82891d1bacfe541
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1477745
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
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The vm_reserve_va_node struct is essentially a special VM area that
can be used for sparse mappings and fixed mappings. The name of this
struct is somewhat confusing (as node is typically used for list
items). Though this struct is a part of a list it doesn't really
make sense to call this a list item since it's much more. Based on
that the struct has been renamed to nvgpu_vm_area to capture the
actual use of the struct more accurately.
This also moves all of the management code of vm areas to a new file
devoted solely to vm_area management.
Also add a brief overview of the VM architecture. This should help
other people follow along the hierachy of ownership and lifetimes in
the rather complex MM code.
JIRA NVGPU-12
JIRA NVGPU-30
Change-Id: If85e1cf868031d0dc265e7bed50b58a2aed2602e
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1477744
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
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This patch begins splitting out the VM implementation from mm_gk20a.c and
moves it to common/linux/vm.c and common/mm/vm.c. This split is necessary
because the VM code has two portions: first, an interface for the OS
specific code to use (i.e userspace mappings), and second, a set of APIs
for the driver to use (init, cleanup, etc) which are not OS specific.
This is only the beginning of the split - there's still a lot of things
that need to be carefully moved around.
JIRA NVGPU-12
JIRA NVGPU-30
Change-Id: I3b57cba245d7daf9e4326a143b9c6217e0f28c96
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1477743
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
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