diff options
Diffstat (limited to 'sys/i386/xen')
| -rw-r--r-- | sys/i386/xen/pmap.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sys/i386/xen/pmap.c b/sys/i386/xen/pmap.c index c44bf18..7671dd9 100644 --- a/sys/i386/xen/pmap.c +++ b/sys/i386/xen/pmap.c @@ -1292,7 +1292,19 @@ pmap_qenter(vm_offset_t sva, vm_page_t *ma, int count) mclp->args[0] = va; mclp->args[1] = (uint32_t)(pa & 0xffffffff); mclp->args[2] = (uint32_t)(pa >> 32); +#if 0 mclp->args[3] = (*pte & PG_V) ? UVMF_INVLPG|UVMF_ALL : 0; +#else + /* + * Somehow we seem to be ending up with pages which are in + * the TLB in spite of not having PG_V set, resulting in + * pages newly loaded into the bufcache not showing up + * immediately (i.e., accessing them provides the old data). + * As a workaround, always perform a TLB flush, even if the + * old page didn't have PG_V. + */ + mclp->args[3] = UVMF_INVLPG|UVMF_ALL; +#endif va += PAGE_SIZE; pte++; |
