Revision 74ca317c26a3f8543203b61d262c0ab2e30c384e authored by Vivek Goyal on 29 August 2014, 22:18:46 UTC, committed by Linus Torvalds on 29 August 2014, 23:28:16 UTC
Currently new system call kexec_file_load() and all the associated code compiles if CONFIG_KEXEC=y. But new syscall also compiles purgatory code which currently uses gcc option -mcmodel=large. This option seems to be available only gcc 4.4 onwards. Hiding new functionality behind a new config option will not break existing users of old gcc. Those who wish to enable new functionality will require new gcc. Having said that, I am trying to figure out how can I move away from using -mcmodel=large but that can take a while. I think there are other advantages of introducing this new config option. As this option will be enabled only on x86_64, other arches don't have to compile generic kexec code which will never be used. This new code selects CRYPTO=y and CRYPTO_SHA256=y. And all other arches had to do this for CONFIG_KEXEC. Now with introduction of new config option, we can remove crypto dependency from other arches. Now CONFIG_KEXEC_FILE is available only on x86_64. So whereever I had CONFIG_X86_64 defined, I got rid of that. For CONFIG_KEXEC_FILE, instead of doing select CRYPTO=y, I changed it to "depends on CRYPTO=y". This should be safer as "select" is not recursive. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: H. Peter Anvin <hpa@zytor.com> Tested-by: Shaun Ruffell <sruffell@digium.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent b38af47
File | Mode | Size |
---|---|---|
ChangeLog | -rw-r--r-- | 14.0 KB |
Kconfig | -rw-r--r-- | 917 bytes |
Makefile | -rw-r--r-- | 206 bytes |
TODO | -rw-r--r-- | 385 bytes |
befs.h | -rw-r--r-- | 3.2 KB |
befs_fs_types.h | -rw-r--r-- | 4.9 KB |
btree.c | -rw-r--r-- | 21.8 KB |
btree.h | -rw-r--r-- | 300 bytes |
datastream.c | -rw-r--r-- | 15.5 KB |
datastream.h | -rw-r--r-- | 514 bytes |
debug.c | -rw-r--r-- | 7.0 KB |
endian.h | -rw-r--r-- | 3.1 KB |
inode.c | -rw-r--r-- | 1.2 KB |
inode.h | -rw-r--r-- | 123 bytes |
io.c | -rw-r--r-- | 1.8 KB |
io.h | -rw-r--r-- | 190 bytes |
linuxvfs.c | -rw-r--r-- | 24.3 KB |
super.c | -rw-r--r-- | 3.0 KB |
super.h | -rw-r--r-- | 134 bytes |
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...