Author: jkim
Date: Fri Jan 21 18:31:57 2011
New Revision: 217700
URL: http://svn.freebsd.org/changeset/base/217700
Log:
MFC: r217424
Remove redundant, bogus, and even harmful uses of setting TS bit in CR0.
It is done from fpstate_drop() when it is really necessary.
Modified:
stable/8/sys/amd64/ia32/ia32_signal.c
stable/8/sys/amd64/linux32/linux32_sysvec.c
Directory Properties:
stable/8/sys/ (props changed)
stable/8/sys/amd64/include/xen/ (props changed)
stable/8/sys/cddl/contrib/opensolaris/ (props changed)
stable/8/sys/contrib/dev/acpica/ (props changed)
stable/8/sys/contrib/pf/ (props changed)
Modified: stable/8/sys/amd64/ia32/ia32_signal.c
==============================================================================
--- stable/8/sys/amd64/ia32/ia32_signal.c Fri Jan 21 18:18:55 2011
(r217699)
+++ stable/8/sys/amd64/ia32/ia32_signal.c Fri Jan 21 18:31:57 2011
(r217700)
@@ -741,7 +741,6 @@ ia32_setregs(td, entry, stack, ps_string
regs->tf_gs = _ugssel;
regs->tf_flags = TF_HASSEGS;
- load_cr0(rcr0() | CR0_MP | CR0_TS);
fpstate_drop(td);
/* Return via doreti so that we can change to a different %cs */
Modified: stable/8/sys/amd64/linux32/linux32_sysvec.c
==============================================================================
--- stable/8/sys/amd64/linux32/linux32_sysvec.c Fri Jan 21 18:18:55 2011
(r217699)
+++ stable/8/sys/amd64/linux32/linux32_sysvec.c Fri Jan 21 18:31:57 2011
(r217700)
@@ -875,7 +875,7 @@ exec_linux_setregs(td, entry, stack, ps_
regs->tf_flags = TF_HASSEGS;
regs->tf_cs = _ucode32sel;
regs->tf_rbx = ps_strings;
- load_cr0(rcr0() | CR0_MP | CR0_TS);
+
fpstate_drop(td);
/* Do full restore on return so that we can change to a different %cs */
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