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MFC 256293:
authorjhb <jhb@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Fri, 15 Nov 2013 15:08:53 +0000 (15:08 +0000)
committerjhb <jhb@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Fri, 15 Nov 2013 15:08:53 +0000 (15:08 +0000)
commit8d44cc0af0eb31dc0d3bd4a911fc377826143c33
tree669c2894e1893c8796d48f2362c00e9bd233923etree | snapshot
parentb3c616f3b733a1a7d20af8c96748e83c442d8489commit | diff
MFC 256293:
Sanitize the %eflags returned by BIOS routines.  Some BIOS routines enter
protected mode and may leave protected-mode-specific flags like PSL_NT set
when they return to real mode.  This can cause a fault when BTX re-enters
protected mode after the BIOS mode returns.

PR: amd64/182740

git-svn-id: svn://svn.freebsd.org/base/stable/9@258171 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
sys/boot/i386/btx/btx/btx.S diff | blob | history
9-STABLE