svn commit: r217701 - in stable/7/sys/amd64: ia32 linux32

Jung-uk Kim jkim at FreeBSD.org
Fri Jan 21 18:32:30 UTC 2011


Author: jkim
Date: Fri Jan 21 18:32:29 2011
New Revision: 217701
URL: http://svn.freebsd.org/changeset/base/217701

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/7/sys/amd64/ia32/ia32_signal.c
  stable/7/sys/amd64/linux32/linux32_sysvec.c
Directory Properties:
  stable/7/sys/   (props changed)
  stable/7/sys/cddl/contrib/opensolaris/   (props changed)
  stable/7/sys/contrib/dev/acpica/   (props changed)
  stable/7/sys/contrib/pf/   (props changed)

Modified: stable/7/sys/amd64/ia32/ia32_signal.c
==============================================================================
--- stable/7/sys/amd64/ia32/ia32_signal.c	Fri Jan 21 18:31:57 2011	(r217700)
+++ stable/7/sys/amd64/ia32/ia32_signal.c	Fri Jan 21 18:32:29 2011	(r217701)
@@ -736,7 +736,6 @@ ia32_setregs(td, entry, stack, ps_string
 	regs->tf_ss = _udatasel;
 	regs->tf_cs = _ucode32sel;
 	regs->tf_rbx = ps_strings;
-	load_cr0(rcr0() | CR0_MP | CR0_TS);
 	fpstate_drop(td);
 
 	/* Return via doreti so that we can change to a different %cs */

Modified: stable/7/sys/amd64/linux32/linux32_sysvec.c
==============================================================================
--- stable/7/sys/amd64/linux32/linux32_sysvec.c	Fri Jan 21 18:31:57 2011	(r217700)
+++ stable/7/sys/amd64/linux32/linux32_sysvec.c	Fri Jan 21 18:32:29 2011	(r217701)
@@ -860,7 +860,7 @@ exec_linux_setregs(td, entry, stack, ps_
 	regs->tf_ss = _udatasel;
 	regs->tf_cs = _ucode32sel;
 	regs->tf_rbx = ps_strings;
-	load_cr0(rcr0() | CR0_MP | CR0_TS);
+
 	fpstate_drop(td);
 
 	/* Return via doreti so that we can change to a different %cs */


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