- add Zstandard compression support, allows to enable the
  kernel CONFIG_MODULE_COMPRESS_ZSTD option
- LIBKMOD_ZSTD selects HOST_LIBKMOD_ZSTD so depmod understands
  Zstandard during kernel build

Signed-off-by: Philipp Zabel <[email protected]>
---
 rules/host-libkmod.in   | 8 ++++++++
 rules/host-libkmod.make | 1 +
 rules/libkmod.in        | 8 ++++++++
 rules/libkmod.make      | 5 +++--
 4 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/rules/host-libkmod.in b/rules/host-libkmod.in
index dc03abc2a2ab..a32c0e353b19 100644
--- a/rules/host-libkmod.in
+++ b/rules/host-libkmod.in
@@ -2,4 +2,12 @@
 
 config HOST_LIBKMOD
        tristate
+       select HOST_ZSTD        if HOST_LIBKMOD_ZSTD
        default y if ALLYES
+
+if HOST_LIBKMOD
+
+config HOST_LIBKMOD_ZSTD
+       bool
+
+endif
diff --git a/rules/host-libkmod.make b/rules/host-libkmod.make
index 57c8b2ecf9f9..1438eda33424 100644
--- a/rules/host-libkmod.make
+++ b/rules/host-libkmod.make
@@ -32,6 +32,7 @@ HOST_LIBKMOD_CONF_OPT := \
        --disable-coverage \
        --without-xz \
        --without-zlib \
+       --$(call ptx/wwo, PTXCONF_HOST_LIBKMOD_ZSTD)-zstd \
        --without-openssl
 
 # ----------------------------------------------------------------------------
diff --git a/rules/libkmod.in b/rules/libkmod.in
index 1660f7c4b58b..80590a9d0d81 100644
--- a/rules/libkmod.in
+++ b/rules/libkmod.in
@@ -3,6 +3,8 @@
 menuconfig LIBKMOD
        tristate
        select ZLIB if LIBKMOD_ZLIB
+       select ZSTD if LIBKMOD_ZSTD
+       select HOST_LIBKMOD_ZSTD if LIBKMOD_ZSTD
        prompt "libkmod                       "
        help
          libkmod is a library with a set of tools frontends to handle common
@@ -83,6 +85,12 @@ config LIBKMOD_ZLIB
        help
          Use the 'zlib' to handle compressed modules
 
+config LIBKMOD_ZSTD
+       bool
+       prompt "use zstd"
+       help
+         Use 'libzstd' to handle Zstandard compressed modules
+
 config LIBKMOD_LOGGING
        bool
        prompt "enable syslog"
diff --git a/rules/libkmod.make b/rules/libkmod.make
index 4f6510fd92d0..f51d4323e283 100644
--- a/rules/libkmod.make
+++ b/rules/libkmod.make
@@ -14,8 +14,8 @@ PACKAGES-$(PTXCONF_LIBKMOD) += libkmod
 #
 # Paths and names
 #
-LIBKMOD_VERSION        := 27
-LIBKMOD_MD5    := 3973a74786670d3062d89a827e266581
+LIBKMOD_VERSION        := 28
+LIBKMOD_MD5    := 0a2b887b1b3dfb8c0b3f41f598203e56
 LIBKMOD                := kmod-$(LIBKMOD_VERSION)
 LIBKMOD_SUFFIX := tar.xz
 LIBKMOD_URL    := $(call ptx/mirror, KERNEL, 
utils/kernel/kmod/$(LIBKMOD).$(LIBKMOD_SUFFIX))
@@ -45,6 +45,7 @@ LIBKMOD_CONF_OPT      := \
        --disable-coverage \
        --without-xz \
        --$(call ptx/wwo, PTXCONF_LIBKMOD_ZLIB)-zlib \
+       --$(call ptx/wwo, PTXCONF_LIBKMOD_ZSTD)-zstd \
        --without-openssl
 
 # ----------------------------------------------------------------------------
-- 
2.29.2


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