Messages in this thread | | | Date | Thu, 26 Jan 2023 15:16:10 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH 0/8] lib/zlib: Set of s390 DFLTCC related patches for kernel zlib |
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On Thu, 26 Jan 2023 14:14:20 +0100 Mikhail Zaslonko <zaslonko@linux.ibm.com> wrote:
> Patches 1-7 represent a set of s390 zlib hardware support (DFLTCC) related fixes > and enhancements integrated from zlib-ng repo relevant to kernel zlib > (https://github.com/zlib-ng/zlib-ng). > Since the official zlib repository never got DFLTCC support code merged, all > the patches have been picked from zlib-ng fork (zlib data compression library > for the next generation systems). This repo contains new optimizations and > fixes not getting implemented into the official zlib repository and falls under > the same zlib License. All of the original patches from zlib-ng were authored > by Ilya Leoshkevich <iii@linux.ibm.com>. Coding style has been preserved for > future maintainability. > Patches 1-2 should have no effect for the kernel zlib but make the code > closer to zlib-ng for future maintainability. > Only Patch 3 touches common zlib_deflate code, other patches are relevant to > s390 tree only. > > Patch 8 is separate and intends to resolve an issue with kernel PPP driver > which can use kernel zlib for packet compression. Without this patch PPP > decompression can fail due to error code returned by hardware (dfltcc_inflate) > and PPP disables zlib compression for further packets. > > @Andrew, would you pick this patch series yourself (which is totally fine > with me) or shall we carry it via s390 tree?
I'll grab. zlib changes are pretty rare, but perhaps someone else will do something..
> Mikhail Zaslonko (8): > lib/zlib: Adjust offset calculation for dfltcc_state > lib/zlib: Implement switching between DFLTCC and software > lib/zlib: Fix DFLTCC not flushing EOBS when creating raw streams > lib/zlib: Fix DFLTCC ignoring flush modes when avail_in == 0 > lib/zlib: DFLTCC not writing header bits when avail_out == 0 > lib/zlib: Split deflate and inflate states for DFLTCC > lib/zlib: DFLTCC support inflate with small window > lib/zlib: DFLTCC always switch to software inflate for Z_PACKET_FLUSH > option
Most of these have a github link in lieu of a changelog. And most of the github commits are unchangelogged. That's pretty sad, but the zlib audience is small and zlib isn't really kernel code anyway, so I guess we can look the other way.
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