2 Commits

Author	SHA1	Message	Date
Philip Elcan	49a620e48a	gpu: nvgpu: mm: limit recursion depth for pd levels ... The two MM functions nvgpu_set_pd_level() and nvgpu_vm_do_free_entries() are simple recursive functions for processing page descriptors (PDs) by traversing the levels in the PDs. MISRA Rule 17.2 prohibits functions calling themselves because "unless recursion is tightly controlled, it is not possible to determine before execution what the worst-case stack usage could be." So, this change limits the recursion depth of each of these functions to the maximum number of page table levels by checking the level against the MM HAL max_page_table_levels(). This also required configuring this HAL in various unit tests as they were no previously using this HAL. JIRA NVGPU-3489 Change-Id: Iadee3fa5ba9f45cd643ac6c202e9296d75d51880 Signed-off-by: Philip Elcan <pelcan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2224450 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>	2020-12-15 14:10:29 -06:00
Nicolas Benech	e863c846f2	gpu: nvgpu: units: add mm.dma unit tests ... Unit tests to cover all APIs of mm.dma and most error branches. JIRA NVGPU-2225 Change-Id: Ie7e587bbd6a839e0d7c641da87ee5ea65155ef90 Signed-off-by: Nicolas Benech <nbenech@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2145435 GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>	2019-07-09 14:55:06 -07:00