From: Ian Campbell <i...@debian.org>
This avoids needing to update all the native update-grub stanzas to also probe
for and arrange to load the relevant decompressor, which would be wasteful on
native boots.
Signed-off-by: Ian Campbell <i...@debian.org>
---
util/grub-install.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/util/grub-install.c b/util/grub-install.c
index 7a7734e..6ad5afb 100644
--- a/util/grub-install.c
+++ b/util/grub-install.c
@@ -422,6 +422,14 @@ push_cryptodisk_module (const char *mod, void *data
__attribute__ ((unused)))
}
static void
+push_all_decompressor_modules(void)
+{
+ grub_install_push_module ("gzio");
+ grub_install_push_module ("xzio");
+ grub_install_push_module ("lzopio");
+}
+
+static void
probe_mods (grub_disk_t disk)
{
grub_partition_t part;
@@ -1228,6 +1236,23 @@ main (int argc, char *argv[])
}
}
+
+ switch (platform)
+ {
+ case GRUB_INSTALL_PLATFORM_I386_XEN:
+ case GRUB_INSTALL_PLATFORM_X86_64_XEN:
+ /* When booting a Xen PV kernel grub may need to decompress the
+ * kernel which may use a variety of algorithmns. Since we try
+ * to reuse the native grub.cfg files rather than trying to
+ * insmod the relevant decompressors on the fly we build them
+ * into the core image. This means we avoid needlessly loading
+ * modules on native. */
+ push_all_decompressor_modules();
+ break;
+ default:
+ break;
+ }
+
grub_install_copy_files (grub_install_source_directory,
grubdir, platform);
--
2.1.3
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