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authorChristoph Hellwig <hch@lst.de>2020-06-08 21:35:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-09 09:39:16 -0700
commitfa94111d94354de76c47fea6e1187d1ee91e23a7 (patch)
tree3b93b7e0348374ee7ed537642e205a567a64ce5f /mm/maccess.c
parentb58294ead14cde8081853487929adca821ed630d (diff)
x86: use non-set_fs based maccess routines
Provide arch_kernel_read and arch_kernel_write routines to implement the maccess routines without messing with set_fs and without stac/clac that opens up access to user space. [akpm@linux-foundation.org: coding style fixes] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20200521152301.2587579-20-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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