6044 * unload any current translations that might exist).
6045 */
6046 hat_unload(seg->s_as->a_hat, addr, len, HAT_UNLOAD);
6047 } else {
6048 /*
6049 * A shared mapping or a private mapping in which write
6050 * protection is going to be denied - just change all the
6051 * protections over the range of addresses in question.
6052 * segvn does not support any other attributes other
6053 * than prot so we can use hat_chgattr.
6054 */
6055 hat_chgattr(seg->s_as->a_hat, addr, len, prot);
6056 }
6057
6058 SEGVN_LOCK_EXIT(seg->s_as, &svd->lock);
6059
6060 return (0);
6061 }
6062
6063 /*
6064 * segvn_setpagesize is called via SEGOP_SETPAGESIZE from as_setpagesize,
6065 * to determine if the seg is capable of mapping the requested szc.
6066 */
6067 static int
6068 segvn_setpagesize(struct seg *seg, caddr_t addr, size_t len, uint_t szc)
6069 {
6070 struct segvn_data *svd = (struct segvn_data *)seg->s_data;
6071 struct segvn_data *nsvd;
6072 struct anon_map *amp = svd->amp;
6073 struct seg *nseg;
6074 caddr_t eaddr = addr + len, a;
6075 size_t pgsz = page_get_pagesize(szc);
6076 pgcnt_t pgcnt = page_get_pagecnt(szc);
6077 int err;
6078 u_offset_t off = svd->offset + (uintptr_t)(addr - seg->s_base);
6079
6080 ASSERT(seg->s_as && AS_WRITE_HELD(seg->s_as, &seg->s_as->a_lock));
6081 ASSERT(addr >= seg->s_base && eaddr <= seg->s_base + seg->s_size);
6082
6083 if (seg->s_szc == szc || segvn_lpg_disable != 0) {
6084 return (0);
|
6044 * unload any current translations that might exist).
6045 */
6046 hat_unload(seg->s_as->a_hat, addr, len, HAT_UNLOAD);
6047 } else {
6048 /*
6049 * A shared mapping or a private mapping in which write
6050 * protection is going to be denied - just change all the
6051 * protections over the range of addresses in question.
6052 * segvn does not support any other attributes other
6053 * than prot so we can use hat_chgattr.
6054 */
6055 hat_chgattr(seg->s_as->a_hat, addr, len, prot);
6056 }
6057
6058 SEGVN_LOCK_EXIT(seg->s_as, &svd->lock);
6059
6060 return (0);
6061 }
6062
6063 /*
6064 * segvn_setpagesize is called via segop_setpagesize from as_setpagesize,
6065 * to determine if the seg is capable of mapping the requested szc.
6066 */
6067 static int
6068 segvn_setpagesize(struct seg *seg, caddr_t addr, size_t len, uint_t szc)
6069 {
6070 struct segvn_data *svd = (struct segvn_data *)seg->s_data;
6071 struct segvn_data *nsvd;
6072 struct anon_map *amp = svd->amp;
6073 struct seg *nseg;
6074 caddr_t eaddr = addr + len, a;
6075 size_t pgsz = page_get_pagesize(szc);
6076 pgcnt_t pgcnt = page_get_pagecnt(szc);
6077 int err;
6078 u_offset_t off = svd->offset + (uintptr_t)(addr - seg->s_base);
6079
6080 ASSERT(seg->s_as && AS_WRITE_HELD(seg->s_as, &seg->s_as->a_lock));
6081 ASSERT(addr >= seg->s_base && eaddr <= seg->s_base + seg->s_size);
6082
6083 if (seg->s_szc == szc || segvn_lpg_disable != 0) {
6084 return (0);
|