diff options
| author | dfr <dfr@FreeBSD.org> | 2001-10-07 18:40:01 +0000 |
|---|---|---|
| committer | dfr <dfr@FreeBSD.org> | 2001-10-07 18:40:01 +0000 |
| commit | aadf7f21917a27a29284be548ff0f19df50b9c37 (patch) | |
| tree | d0809132cbdf21a93b4dead10179b4454656087b /sys | |
| parent | 94ad0dbb03b934b2d2b226fa58341ff9546f652e (diff) | |
| download | FreeBSD-src-aadf7f21917a27a29284be548ff0f19df50b9c37.zip FreeBSD-src-aadf7f21917a27a29284be548ff0f19df50b9c37.tar.gz | |
* Use srlz.i to serialise changes to psr.ic
* Don't enable psr.i at the same time as psr.dt and psr.ic
These changes improve stability considerably.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/ia64/ia64/exception.S | 16 | ||||
| -rw-r--r-- | sys/ia64/ia64/exception.s | 16 |
2 files changed, 20 insertions, 12 deletions
diff --git a/sys/ia64/ia64/exception.S b/sys/ia64/ia64/exception.S index 904b07e..cb39d00 100644 --- a/sys/ia64/ia64/exception.S +++ b/sys/ia64/ia64/exception.S @@ -876,7 +876,7 @@ ENTRY(exception_restore, 0) rsm psr.ic|psr.dt|psr.i // disable interrupt collection and vm add r3=16,sp; ;; - srlz.d + srlz.i dep r3=0,r3,61,3 // physical address ;; add r16=TF_CR_IPSR,r3 @@ -1240,8 +1240,8 @@ ENTRY(exception_save, 0) mov r14=cr.iim // break immediate ssm psr.ic|psr.dt // enable interrupts & translation ;; - srlz.d // serialize - + srlz.i // serialize + ;; br.sptk.few b0 // not br.ret - we were not br.call'ed END(exception_save) @@ -1335,9 +1335,13 @@ ENTRY(do_syscall, 0) mov r22=cr.ifs // record user's CFM add r23=TF_CR_IFS,r18 ;; - ssm psr.dt|psr.ic|psr.i // safe to take interrupts again + ssm psr.ic|psr.dt + ;; + srlz.i // serialize psr.ic and psr.dt + ;; + ssm psr.i // safe to take interrupts again ;; - srlz.d // serialize psr.dt and psr.ic + srlz.d // serialize psr.i ;; st8 [r23]=r22 // save cr.ifs ;; @@ -1374,7 +1378,7 @@ ENTRY(do_syscall, 0) rsm psr.dt|psr.ic|psr.i // get ready to restore ;; - srlz.d // serialise psr.dt and psr.ic + srlz.i // serialise psr.dt and psr.ic dep r30=0,loc1,61,3 // physical address mov gp=loc2 // restore user gp add r16=SIZEOF_TRAPFRAME,loc1 diff --git a/sys/ia64/ia64/exception.s b/sys/ia64/ia64/exception.s index 904b07e..cb39d00 100644 --- a/sys/ia64/ia64/exception.s +++ b/sys/ia64/ia64/exception.s @@ -876,7 +876,7 @@ ENTRY(exception_restore, 0) rsm psr.ic|psr.dt|psr.i // disable interrupt collection and vm add r3=16,sp; ;; - srlz.d + srlz.i dep r3=0,r3,61,3 // physical address ;; add r16=TF_CR_IPSR,r3 @@ -1240,8 +1240,8 @@ ENTRY(exception_save, 0) mov r14=cr.iim // break immediate ssm psr.ic|psr.dt // enable interrupts & translation ;; - srlz.d // serialize - + srlz.i // serialize + ;; br.sptk.few b0 // not br.ret - we were not br.call'ed END(exception_save) @@ -1335,9 +1335,13 @@ ENTRY(do_syscall, 0) mov r22=cr.ifs // record user's CFM add r23=TF_CR_IFS,r18 ;; - ssm psr.dt|psr.ic|psr.i // safe to take interrupts again + ssm psr.ic|psr.dt + ;; + srlz.i // serialize psr.ic and psr.dt + ;; + ssm psr.i // safe to take interrupts again ;; - srlz.d // serialize psr.dt and psr.ic + srlz.d // serialize psr.i ;; st8 [r23]=r22 // save cr.ifs ;; @@ -1374,7 +1378,7 @@ ENTRY(do_syscall, 0) rsm psr.dt|psr.ic|psr.i // get ready to restore ;; - srlz.d // serialise psr.dt and psr.ic + srlz.i // serialise psr.dt and psr.ic dep r30=0,loc1,61,3 // physical address mov gp=loc2 // restore user gp add r16=SIZEOF_TRAPFRAME,loc1 |
