wireguard-linux/drivers/tee/optee/call.c, branch jd/unified-crypt-queue

tee: optee: Fix dynamic shm pool allocations

2019-11-15T10:31:11Z

In case of dynamic shared memory pool, kernel memory allocated using dmabuf_mgr pool needs to be registered with OP-TEE prior to its usage during optee_open_session() or optee_invoke_func(). So fix dmabuf_mgr pool allocations via an additional call to optee_shm_register(). Also, allow kernel pages to be registered as shared memory with OP-TEE. Fixes: 9733b072a12a ("optee: allow to work without static shared memory") Signed-off-by: Sumit Garg Signed-off-by: Jens Wiklander

tee: optee: add might_sleep for RPC requests

2019-07-08T20:38:56Z

If the kernel is compiled with CONFIG_PREEMPT_VOLUNTARY and OP-TEE is executing a long running workload, the following errors are raised: [ 1705.971228] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: [ 1705.977195] rcu: (detected by 0, t=2102 jiffies, g=51977, q=3) [ 1705.983152] rcu: All QSes seen, last rcu_sched kthread activity 2102 (140596-138494), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 1705.994729] optee-xtest R running task 0 169 157 0x00000002 While OP-TEE is returning regularly to the kernel due to timer interrupts, the OPTEE_SMC_FUNC_FOREIGN_INTR case does not contain an explicit rescheduling point. Add a might_sleep() to the RPC request case to ensure that the kernel can reschedule another task if OP-TEE requests RPC handling. Signed-off-by: Rouven Czerwinski Signed-off-by: Jens Wiklander

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282

2019-06-05T15:36:37Z

Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman

Merge tag 'tee-drv-dynamic-shm+fixes-for-v4.16' of https://git.linaro.org/people/jens.wiklander/linux-tee into next/drivers

2018-01-12T02:05:06Z

This pull request updates the previous tee-drv-dynamic-shm-for-v4.16 pull request with five new patches fixing review comments and errors. Apart from three small fixes there's two larger patches that in the end checks that memory to be registered really is normal cached memory. * tag 'tee-drv-dynamic-shm+fixes-for-v4.16' of https://git.linaro.org/people/jens.wiklander/linux-tee: tee: shm: Potential NULL dereference calling tee_shm_register() tee: shm: don't put_page on null shm->pages tee: shm: make function __tee_shm_alloc static tee: optee: check type of registered shared memory tee: add start argument to shm_register callback Signed-off-by: Olof Johansson

tee: optee: check type of registered shared memory

2017-12-28T12:21:27Z

Checks the memory type of the pages to be registered as shared memory. Only normal cached memory is allowed. Signed-off-by: Jens Wiklander

tee: add start argument to shm_register callback

2017-12-28T09:08:00Z

Adds a start argument to the shm_register callback to allow the callback to check memory type of the passed pages. Signed-off-by: Jens Wiklander

tee: optee: fix header dependencies

2017-12-21T20:18:25Z

The optee driver includes the header files in an unusual order, with asm/pgtable.h before the linux/*.h headers. For some reason this seems to trigger a build failure: drivers/tee/optee/call.c: In function 'optee_fill_pages_list': include/asm-generic/memory_model.h:64:14: error: implicit declaration of function 'page_to_section'; did you mean '__nr_to_section'? [-Werror=implicit-function-declaration] int __sec = page_to_section(__pg); \ drivers/tee/optee/call.c:494:15: note: in expansion of macro 'page_to_phys' optee_page = page_to_phys(*pages) + Let's just include linux/mm.h, which will then get the other header implicitly. Fixes: 3bb48ba5cd60 ("tee: optee: add page list manipulation functions") Signed-off-by: Arnd Bergmann

tee: optee: add registered buffers handling into RPC calls

2017-12-15T12:35:37Z

With latest changes to OP-TEE we can use any buffers as a shared memory. Thus, it is possible for supplicant to provide part of own memory when OP-TEE asks to allocate a shared buffer. This patch adds support for such feature into RPC handling code. Now when OP-TEE asks supplicant to allocate shared buffer, supplicant can use TEE_IOC_SHM_REGISTER to provide such buffer. RPC handler is aware of this, so it will pass list of allocated pages to OP-TEE. Signed-off-by: Volodymyr Babchuk [jw: fix parenthesis alignment in free_pages_list()] Signed-off-by: Jens Wiklander

tee: optee: add shared buffer registration functions

2017-12-15T12:32:32Z

This change adds ops for shm_(un)register functions in tee interface. Client application can use these functions to (un)register an own shared buffer in OP-TEE address space. This allows zero copy data sharing between Normal and Secure Worlds. Please note that while those functions were added to optee code, it does not report to userspace that those functions are available. OP-TEE code does not set TEE_GEN_CAP_REG_MEM flag. This flag will be enabled only after all other features of dynamic shared memory will be implemented in subsequent patches. Of course user can ignore presence of TEE_GEN_CAP_REG_MEM flag and try do call those functions. This is okay, driver will register shared buffer in OP-TEE, but any attempts to use this shared buffer will fail. Signed-off-by: Volodymyr Babchuk Signed-off-by: Jens Wiklander

tee: optee: add page list manipulation functions

2017-12-15T12:32:31Z

These functions will be used to pass information about shared buffers to OP-TEE. ABI between Linux and OP-TEE is defined in optee_msg.h and optee_smc.h. optee_msg.h defines OPTEE_MSG_ATTR_NONCONTIG attribute for shared memory references and describes how such references should be passed. Note that it uses 64-bit page addresses even on 32 bit systems. This is done to support LPAE and to unify interface. Signed-off-by: Volodymyr Babchuk [jw: replacing uint64_t with u64 in optee_fill_pages_list()] Signed-off-by: Jens Wiklander