x86: remove address space overrides using set_fs()
Stop providing the possibility to override the address space using set_fs() now that there is no need for that any more. To properly handle the TASK_SIZE_MAX checking for 4 vs 5-level page tables on x86 a new alternative is introduced, which just like the one in entry_64.S has to use the hardcoded virtual address bits to escape the fact that TASK_SIZE_MAX isn't actually a constant when 5-level page tables are enabled. Signed-off-by:Christoph Hellwig <hch@lst.de> Reviewed-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
parent
a1d826d4
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