CVS commit: src/sys/arch/amd64/amd64

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Sun Feb 25 11:57:44 UTC 2018

Modified Files:
        src/sys/arch/amd64/amd64: amd64_trap.S

Log Message:
Ah. Don't use NENTRY() to declare check_swapgs, use LABEL() instead. NENTRY
puts the code in the .text section, so the effect of TEXT_USER_BEGIN was
overwritten, and check_swapgs was not put in the .text.user section.

As a result kernels running SVS would crash when jumping here - because we
execute this place with the user page table loaded, and in this page table
only .text.user is mapped.

While here, rename check_swapgs -> kernuser_reenter, because we do more
things than just SWAPGS.


To generate a diff of this commit:
cvs rdiff -u -r1.35 -r1.36 src/sys/arch/amd64/amd64/amd64_trap.S

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.