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author | Michael Ellerman <mpe@ellerman.id.au> | 2020-02-01 21:47:17 +1100 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-02-01 21:47:17 +1100 |
commit | 4c25df5640ae6e4491ee2c50d3f70c1559ef037d (patch) | |
tree | 9d68b0361918926d7d7b6d78090dcfb942ec4e72 /drivers/tee/optee/shm_pool.c | |
parent | powerpc: configs: Cleanup old Kconfig options (diff) | |
parent | powerpc: Implement user_access_save() and user_access_restore() (diff) | |
download | linux-dev-4c25df5640ae6e4491ee2c50d3f70c1559ef037d.tar.xz linux-dev-4c25df5640ae6e4491ee2c50d3f70c1559ef037d.zip |
Merge branch 'topic/user-access-begin' into next
Merge the user_access_begin() series from Christophe. This is based on
a commit from Linus that went into v5.5-rc7.
Diffstat (limited to 'drivers/tee/optee/shm_pool.c')
-rw-r--r-- | drivers/tee/optee/shm_pool.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/tee/optee/shm_pool.c b/drivers/tee/optee/shm_pool.c index 0332a5301d61..d767eebf30bd 100644 --- a/drivers/tee/optee/shm_pool.c +++ b/drivers/tee/optee/shm_pool.c @@ -28,9 +28,22 @@ static int pool_op_alloc(struct tee_shm_pool_mgr *poolm, shm->size = PAGE_SIZE << order; if (shm->flags & TEE_SHM_DMA_BUF) { + unsigned int nr_pages = 1 << order, i; + struct page **pages; + + pages = kcalloc(nr_pages, sizeof(pages), GFP_KERNEL); + if (!pages) + return -ENOMEM; + + for (i = 0; i < nr_pages; i++) { + pages[i] = page; + page++; + } + shm->flags |= TEE_SHM_REGISTER; - rc = optee_shm_register(shm->ctx, shm, &page, 1 << order, + rc = optee_shm_register(shm->ctx, shm, pages, nr_pages, (unsigned long)shm->kaddr); + kfree(pages); } return rc; |