Hi, Since 3.13 kernels with built-in initrd fail to boot on Fujitsu hardware in EFI mode (efi stub) though the exact same kernel binary does boot in BIOS mode (grub). Interestingly EFI kernels with different config do boot under VMWare. Your patch "initramfs: read CONFIG_RD_ variables for initramfs compression" is the trigger. Is something missing in EFI stub or why do things behave differently? Looking at compiled kernel with and without this patch the resulting bzImage is similar in size but in build directory I get: Vanilla 3.13, CONFIG_INITRAMFS_COMPRESSION_NONE=y: -rw-r--r-- 1 kbuild kbuild 399 Aug 4 10:26 usr/built-in.mod.c -rw-r--r-- 1 kbuild kbuild 7062309 Aug 4 10:26 usr/built-in.o -rwxr-xr-x 1 kbuild kbuild 22670 Aug 4 10:26 usr/gen_init_cpio -rw-r--r-- 1 kbuild kbuild 7061260 Aug 4 10:26 usr/initramfs_data.cpio.gz -rw-r--r-- 1 kbuild kbuild 7062240 Aug 4 10:26 usr/initramfs_data.o -rw-r--r-- 1 kbuild kbuild 0 Aug 4 10:26 usr/modules.builtin -rw-r--r-- 1 kbuild kbuild 0 Aug 4 10:26 usr/modules.order Does not boot, reboots after exiting EFI stub Vanilla 3.13, CONFIG_INITRAMFS_COMPRESSION_GZIP=y: -rw-r--r-- 1 kbuild kbuild 399 Aug 4 10:26 usr/built-in.mod.c -rw-r--r-- 1 kbuild kbuild 7062309 Aug 4 10:26 usr/built-in.o -rwxr-xr-x 1 kbuild kbuild 22670 Aug 4 10:26 usr/gen_init_cpio -rw-r--r-- 1 kbuild kbuild 7061260 Aug 4 10:26 usr/initramfs_data.cpio.gz -rw-r--r-- 1 kbuild kbuild 7062240 Aug 4 10:26 usr/initramfs_data.o -rw-r--r-- 1 kbuild kbuild 0 Aug 4 10:37 usr/modules.builtin -rw-r--r-- 1 kbuild kbuild 0 Aug 4 10:37 usr/modules.order Does not boot, reboots after exiting EFI stub 3.13 with patch revered, CONFIG_INITRAMFS_COMPRESSION_NONE=y: -rw-r--r-- 1 kbuild kbuild 399 Aug 4 10:16 usr/built-in.mod.c -rw-r--r-- 1 kbuild kbuild 16931869 Aug 4 10:16 usr/built-in.o -rwxr-xr-x 1 kbuild kbuild 22670 Aug 4 10:16 usr/gen_init_cpio -rw-r--r-- 1 kbuild kbuild 16930816 Aug 4 10:16 usr/initramfs_data.cpio -rw-r--r-- 1 kbuild kbuild 16931800 Aug 4 10:16 usr/initramfs_data.o -rw-r--r-- 1 kbuild kbuild 0 Aug 4 10:16 usr/modules.builtin -rw-r--r-- 1 kbuild kbuild 0 Aug 4 10:16 usr/modules.order Boots successfully. Related config options: CONFIG_RD_GZIP=y CONFIG_RD_BZIP2=y CONFIG_RD_LZMA=y CONFIG_RD_XZ=y CONFIG_RD_LZO=y CONFIG_RD_LZ4=y CONFIG_INITRAMFS_SOURCE="/usr/src/initrd64-20131127.cpio" CONFIG_INITRAMFS_ROOT_UID=0 CONFIG_INITRAMFS_ROOT_GID=0 CONFIG_INITRAMFS_COMPRESSION_NONE=y # CONFIG_INITRAMFS_COMPRESSION_GZIP is not set # CONFIG_INITRAMFS_COMPRESSION_BZIP2 is not set # CONFIG_INITRAMFS_COMPRESSION_LZMA is not set # CONFIG_INITRAMFS_COMPRESSION_XZ is not set # CONFIG_INITRAMFS_COMPRESSION_LZO is not set Bruno -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
