Author: kib
Date: Fri Mar 23 15:46:53 2018
New Revision: 331432
URL: https://svnweb.freebsd.org/changeset/base/331432
Log:
There is no need to disable interrupts around npxsave call.
i386 was changed to only require critical section around the thread
FPU state manipulations, and vm86_bioscall callers already enter
critical section for other reasons.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/i386/i386/vm86bios.s
Modified: head/sys/i386/i386/vm86bios.s
==============================================================================
--- head/sys/i386/i386/vm86bios.s Fri Mar 23 15:44:31 2018
(r331431)
+++ head/sys/i386/i386/vm86bios.s Fri Mar 23 15:46:53 2018
(r331432)
@@ -61,8 +61,6 @@ ENTRY(vm86_bioscall)
pushl %edi
pushl %gs
- pushfl
- cli
movl PCPU(CURTHREAD),%ecx
cmpl %ecx,PCPU(FPCURTHREAD) /* do we need to save fp? */
jne 1f
@@ -73,8 +71,6 @@ ENTRY(vm86_bioscall)
addl $4,%esp
popl %edx /* recover our pcb */
1:
- popfl
-
movl SCR_VMFRAME(%edx),%ebx /* target frame location */
movl %ebx,%edi /* destination */
movl SCR_ARGFRAME(%edx),%esi /* source (set on entry) */
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