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| author | marius <marius@FreeBSD.org> | 2011-09-30 20:23:18 +0000 |
|---|---|---|
| committer | marius <marius@FreeBSD.org> | 2011-09-30 20:23:18 +0000 |
| commit | c4a8a741fd80ee26b85664d65c614df7abeb15cd (patch) | |
| tree | b3a83bd84485238bc0fa008cea1d50da31d975f5 /sys/sparc64 | |
| parent | 0175576bbb095199384c6eb77639d5139105460b (diff) | |
| download | FreeBSD-src-c4a8a741fd80ee26b85664d65c614df7abeb15cd.zip FreeBSD-src-c4a8a741fd80ee26b85664d65c614df7abeb15cd.tar.gz | |
Add a comment about why contrary to what once would think running all of
userland with total store order actually is appropriate.
Diffstat (limited to 'sys/sparc64')
| -rw-r--r-- | sys/sparc64/sparc64/machdep.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/sparc64/sparc64/machdep.c b/sys/sparc64/sparc64/machdep.c index c6252cd..2720448 100644 --- a/sys/sparc64/sparc64/machdep.c +++ b/sys/sparc64/sparc64/machdep.c @@ -1015,6 +1015,10 @@ exec_setregs(struct thread *td, struct image_params *imgp, u_long stack) tf->tf_out[6] = sp - SPOFF - sizeof(struct frame); tf->tf_tnpc = imgp->entry_addr + 4; tf->tf_tpc = imgp->entry_addr; + /* + * While we could adhere to the memory model indicated in the ELF + * header, it turns out that just always using TSO performs best. + */ tf->tf_tstate = TSTATE_IE | TSTATE_PEF | TSTATE_MM_TSO; td->td_retval[0] = tf->tf_out[0]; |
