Sascha Hauer <sha@xxxxxxxxxxxxxx> writes: >> | zstd_decomp_init:536 workspace=8ff1a004+161320 >> | ERROR: initcall ubifs_init+0x1/0xc4 failed: Invalid argument >> > If you had asked me which alignment we have then I would have said it's > bigger. OTOH I never received any reports about insufficient alignment > on ARM or any other 32bit architecture. The code which failed for me was added 3 months ago | commit b4a9782d4f56333e897dccc35c2c27e2605f6b93 | Author: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> | Date: Wed Jul 13 12:09:18 2022 +0200 | | lib: zstd: sync with Linux and the Kconfig options (FS_UBIFS_COMPRESSION_ZSTD) are set to "off"... > I suspect we could just drop the check without any harm, but that's just > a gut feeling because we never had any alignment issues. > > BTW are you sure ldrd/strd need 8 byte alignment? Their EX variants (LDREXD + STREXD; see [1]). Unaligned access on plain LDRD/STRD is allowed on ARMv7-A. But not on ARMv7-M or ARMv6 and earlier. Enrico Footnotes: [1] https://developer.arm.com/documentation/ddi0406/c/Application-Level-Architecture/Application-Level-Memory-Model/Alignment-support/Unaligned-data-access
