Fujitsu SPARC JPS1 Implementation Supplement Manual page 117

sTLB entry update data:
Restriction between the stxa address and ASI TLB Tag Access Register contents:
The preceding restriction is SPARC64 V specific.
106 SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002
New sTLB entry data is designated in stxa data.
New sTLB entry tag is designated in the I/D TLB Tag Access Register.
The relation stxa_VA<11:3> = ASI_TAG_ACCESS_REGISTER<21:13> and
stxa_VA<13> = 0 should be satisfied. Only if this condition is satisfied can the
8-Kbyte sTLB entry be replaced as designated.
The relation stxa_VA<11:3> = ASI_TAG_ACCESS_REGISTER<30:22> and
stxa_VA<13> = 1 should be satisfied. Only if this condition is satisfied can the
4-Mbyte sTLB entry be replaced as designated.
Otherwise, the stxa instruction is ignored without notification to software.