mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-04-29 02:19:54 -04:00
57102ad792
The system crashes due to bad access when reading from an non configured peripheral and when writing to peripheral which is not owned by current ee. This patch verifies ownership to avoid crashing on write. For reads, since the forward mapping table, data_channel->ppid, is towards the end of the block, we use the core size to figure the max number of ppids supported. The table starts at an offset of 0x800 within the block, so size - 0x800 will give us the area used by the table. Since each table is 4 bytes long (core_size - 0x800) / 4 will gives us the number of data_channel supported. This new protection is functional on hw v2. Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org> Signed-off-by: Kiran Gunda <kgunda@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.