Author: kib
Date: Wed Mar 20 13:10:47 2019
New Revision: 345325
URL: https://svnweb.freebsd.org/changeset/base/345325
Log:
MFC r345246:
i386: improve detection of the fast page fault assist.
Modified:
stable/12/sys/i386/i386/exception.s
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/i386/i386/exception.s
==============================================================================
--- stable/12/sys/i386/i386/exception.s Wed Mar 20 13:07:57 2019
(r345324)
+++ stable/12/sys/i386/i386/exception.s Wed Mar 20 13:10:47 2019
(r345325)
@@ -131,6 +131,10 @@ IDTVEC(prot)
pushl $T_PROTFLT
jmp irettraps
IDTVEC(page)
+ testl $PSL_VM, TF_EFLAGS-TF_ERR(%esp)
+ jnz 1f
+ testb $SEL_RPL_MASK, TF_CS-TF_ERR(%esp)
+ jnz 1f
cmpl $PMAP_TRM_MIN_ADDRESS, TF_EIP-TF_ERR(%esp)
jb 1f
movl %ebx, %cr3
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