[src/trunk]: src/sys/arch/riscv/riscv Use sfence.vm instruction and change pt...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3fb5dd689443
branches:  trunk
changeset: 807184:3fb5dd689443
user:      matt <matt%NetBSD.org@localhost>
date:      Tue Mar 31 01:14:57 2015 +0000

description:
Use sfence.vm instruction and change ptbr cse to sptbr csr

diffstat:

 sys/arch/riscv/riscv/pmap_machdep.c |  10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diffs (43 lines):

diff -r 87477ced83a1 -r 3fb5dd689443 sys/arch/riscv/riscv/pmap_machdep.c
--- a/sys/arch/riscv/riscv/pmap_machdep.c       Tue Mar 31 01:14:02 2015 +0000
+++ b/sys/arch/riscv/riscv/pmap_machdep.c       Tue Mar 31 01:14:57 2015 +0000
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 
-__RCSID("$NetBSD: pmap_machdep.c,v 1.1 2015/03/28 16:13:56 matt Exp $");
+__RCSID("$NetBSD: pmap_machdep.c,v 1.2 2015/03/31 01:14:57 matt Exp $");
 
 #include <sys/param.h>
 
@@ -144,7 +144,7 @@
 void
 pmap_md_pdetab_activate(struct pmap *pmap)
 {
-       __asm("csrw\tptbr, %0" :: "r"(pmap->pm_md.md_ptbr));
+       __asm("csrw\tsptbr, %0" :: "r"(pmap->pm_md.md_ptbr));
 }
 
 void
@@ -176,18 +176,18 @@
 void
 tlb_invalidate_asids(tlb_asid_t lo, tlb_asid_t hi)
 {
-       (void) riscvreg_fatc_read();
+       __asm __volatile("sfence.vm" ::: "memory");
 }
 void
 tlb_invalidate_addr(vaddr_t va, tlb_asid_t asid)
 {
-       (void) riscvreg_fatc_read();
+       __asm __volatile("sfence.vm" ::: "memory");
 }
 
 bool
 tlb_update_addr(vaddr_t va, tlb_asid_t asid, pt_entry_t pte, bool insert_p)
 {
-       (void) riscvreg_fatc_read();
+       __asm __volatile("sfence.vm" ::: "memory");
        return false;
 }