path: root/kernel
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authorVivek Goyal <>2014-08-08 14:25:52 -0700
committerLinus Torvalds <>2014-08-08 15:57:32 -0700
commit815d5704a337a662bf960757edbff7a0680d40fd (patch)
tree54d34d4c4e345e1cfe583c81e3ad4fb585006779 /kernel
parent8c86e70acead629aacb4afcd818add66bf6844d9 (diff)
kexec: make kexec_segment user buffer pointer a union
So far kexec_segment->buf was always a user space pointer as user space passed the array of kexec_segment structures and kernel copied it. But with new system call, list of kexec segments will be prepared by kernel and kexec_segment->buf will point to a kernel memory. So while I was adding code where I made assumption that ->buf is pointing to kernel memory, sparse started giving warning. Make ->buf a union. And where a user space pointer is expected, access it using ->buf and where a kernel space pointer is expected, access it using ->kbuf. That takes care of sparse warnings. Signed-off-by: Vivek Goyal <> Cc: Borislav Petkov <> Cc: Michael Kerrisk <> Cc: Yinghai Lu <> Cc: Eric Biederman <> Cc: H. Peter Anvin <> Cc: Matthew Garrett <> Cc: Greg Kroah-Hartman <> Cc: Dave Young <> Cc: WANG Chao <> Cc: Baoquan He <> Cc: Andy Lutomirski <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions