linux/kernel: backport symbol GPLification fix from 5.19
Linux has a few PowerPC-specific symbols which are marked as GPL exports; these symbols wound up being exposed in Linux 5.12 and are needed by OpenZFS. The symbol licensing was fixed in mainline 5.19; this commit backports the fix to all previous affected kernels. This commit is required in order to build the NixOS ISO for PowerPC64.
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@ -1,5 +1,6 @@
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{ lib, stdenv, buildPackages, runCommand, nettools, bc, bison, flex, perl, rsync, gmp, libmpc, mpfr, openssl
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, libelf, cpio, elfutils, zstd, python3Minimal, zlib, pahole
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, fetchpatch
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}:
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let
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@ -103,7 +104,17 @@ let
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++ optional (lib.versionOlder version "5.19") ./randstruct-provide-seed.patch
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++ optional (lib.versionAtLeast version "5.19") ./randstruct-provide-seed-5.19.patch
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# Fixes determinism by normalizing metadata for the archive of kheaders
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++ optional (lib.versionAtLeast version "5.2" && lib.versionOlder version "5.4") ./gen-kheaders-metadata.patch;
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++ optional (lib.versionAtLeast version "5.2" && lib.versionOlder version "5.4") ./gen-kheaders-metadata.patch
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# Linux 5.12 marked certain PowerPC-only symbols as GPL, which breaks
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# OpenZFS; this was fixed in Linux 5.19 so we backport the fix
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# https://github.com/openzfs/zfs/pull/13367
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++ optional (lib.versionAtLeast version "5.12" &&
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lib.versionOlder version "5.19" &&
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stdenv.hostPlatform.isPower)
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(fetchpatch {
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url = "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/patch/?id=d9e5c3e9e75162f845880535957b7fd0b4637d23";
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hash = "sha256-bBOyJcP6jUvozFJU0SPTOf3cmnTQ6ZZ4PlHjiniHXLU=";
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});
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postPatch = ''
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sed -i Makefile -e 's|= depmod|= ${buildPackages.kmod}/bin/depmod|'
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