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>
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File | Mode | Size |
---|---|---|
Kconfig | -rw-r--r-- | 3.4 KB |
Makefile | -rw-r--r-- | 388 bytes |
acl.c | -rw-r--r-- | 6.1 KB |
acl.h | -rw-r--r-- | 1.5 KB |
balloc.c | -rw-r--r-- | 62.0 KB |
bitmap.c | -rw-r--r-- | 426 bytes |
dir.c | -rw-r--r-- | 14.1 KB |
ext3.h | -rw-r--r-- | 44.3 KB |
ext3_jbd.c | -rw-r--r-- | 1.5 KB |
file.c | -rw-r--r-- | 2.1 KB |
fsync.c | -rw-r--r-- | 3.2 KB |
hash.c | -rw-r--r-- | 4.3 KB |
ialloc.c | -rw-r--r-- | 19.1 KB |
inode.c | -rw-r--r-- | 104.4 KB |
ioctl.c | -rw-r--r-- | 7.4 KB |
namei.c | -rw-r--r-- | 69.3 KB |
namei.h | -rw-r--r-- | 570 bytes |
resize.c | -rw-r--r-- | 34.0 KB |
super.c | -rw-r--r-- | 85.0 KB |
symlink.c | -rw-r--r-- | 1.3 KB |
xattr.c | -rw-r--r-- | 34.6 KB |
xattr.h | -rw-r--r-- | 3.7 KB |
xattr_security.c | -rw-r--r-- | 2.0 KB |
xattr_trusted.c | -rw-r--r-- | 1.4 KB |
xattr_user.c | -rw-r--r-- | 1.5 KB |
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