kernel/linux.git/drivers/crypto/nx, branch v7.0-rc7

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

crypto: nx - Simplify with scoped for each OF child loop

2026-01-23T05:48:44+00:00

Use scoped for-each loop when iterating over device nodes to make code a bit simpler. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Herbert Xu

crypto: comp - Use same definition of context alloc and free ops

2025-09-20T12:21:03+00:00

In commit 42d9f6c77479 ("crypto: acomp - Move scomp stream allocation code into acomp"), the crypto_acomp_streams struct was made to rely on having the alloc_ctx and free_ctx operations defined in the same order as the scomp_alg struct. But in that same commit, the alloc_ctx and free_ctx members of scomp_alg may be randomized by structure layout randomization, since they are contained in a pure ops structure (containing only function pointers). If the pointers within scomp_alg are randomized, but those in crypto_acomp_streams are not, then the order may no longer match. This fixes the problem by removing the union from scomp_alg so that both crypto_acomp_streams and scomp_alg will share the same definition of alloc_ctx and free_ctx, ensuring they will always have the same layout. Signed-off-by: Dan Moulding Suggested-by: Herbert Xu Fixes: 42d9f6c77479 ("crypto: acomp - Move scomp stream allocation code into acomp") Signed-off-by: Herbert Xu

crypto: nx - Use API partial block handling

2025-04-23T07:52:47+00:00

Use the Crypto API partial block handling. Also switch to the generic export format. Signed-off-by: Herbert Xu

crypto: nx - Add missing header inclusions

2025-04-16T07:16:21+00:00

The gutting of crypto/ctr.h uncovered missing header inclusions. Add them. Signed-off-by: Herbert Xu

crypto: nx - Migrate to scomp API

2025-03-21T09:39:06+00:00

The only remaining user of 842 compression has been migrated to the acomp compression API, and so the NX hardware driver has to follow suit, given that no users of the obsolete 'comp' API remain, and it is going to be removed. So migrate the NX driver code to scomp. These will be wrapped and exposed as acomp implementation via the crypto subsystem's acomp-to-scomp adaptation layer. Signed-off-by: Ard Biesheuvel Signed-off-by: Herbert Xu

crypto: nx - Fix uninitialised hv_nxc on error

2025-03-21T09:33:39+00:00

The compiler correctly warns that hv_nxc may be used uninitialised as that will occur when NX-GZIP is unavailable. Fix it by rearranging the code and delay setting caps_feat until the final query succeeds. Fixes: b4ba22114c78 ("crypto/nx: Get NX capabilities for GZIP coprocessor type") Signed-off-by: Herbert Xu

crypto: scatterwalk - Change scatterwalk_next calling convention

2025-03-15T08:21:22+00:00

Rather than returning the address and storing the length into an argument pointer, add an address field to the walk struct and use that to store the address. The length is returned directly. Change the done functions to use this stored address instead of getting them from the caller. Split the address into two using a union. The user should only access the const version so that it is never changed. Signed-off-by: Herbert Xu

crypto: nx - use the new scatterwalk functions

2025-03-02T07:19:43+00:00

- In nx_walk_and_build(), use scatterwalk_start_at_pos() instead of a more complex way to achieve the same result. - Also in nx_walk_and_build(), use the new functions scatterwalk_next() which consolidates scatterwalk_clamp() and scatterwalk_map(), and use scatterwalk_done_src() which consolidates scatterwalk_unmap(), scatterwalk_advance(), and scatterwalk_done(). Remove unnecessary code that seemed to be intended to advance to the next sg entry, which is already handled by the scatterwalk functions. Note that nx_walk_and_build() does not actually read or write the mapped virtual address, and thus it is misusing the scatter_walk API. It really should just access the scatterlist directly. This patch does not try to address this existing issue. - In nx_gca(), use memcpy_from_sglist() instead of a more complex way to achieve the same result. - In various functions, replace calls to scatterwalk_map_and_copy() with memcpy_from_sglist() or memcpy_to_sglist() as appropriate. Note that this eliminates the confusing 'out' argument (which this driver had tried to work around by defining the missing constants for it...) Cc: Christophe Leroy Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Naveen N Rao Cc: Nicholas Piggin Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu