izzy/xemu
0
0
Fork 0
mirror of https://github.com/izzy2lost/xemu.git synced 2026-07-06 00:20:22 -07:00
Code Issues Packages Projects Releases Wiki Activity

target/loongarch: Skip global TLB when calculating replaced TLB

Browse Source 
When new TLB entry is added, TLB index is calculated from invalid
entry at first and then from different ASID, and randomly at last.

With different ASID, global TLB should be skipped since ASID is not
useful when global TLB is added.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
This commit is contained in:
Bibo Mao
2025-10-15 11:00:47 +08:00
parent 2e9ff01a91
commit f72848e31f
1 changed files with 5 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
target/loongarch/tcg/tlb_helper.c
+5 -3
View File
@@ -371,7 +371,7 @@ void helper_tlbfill(CPULoongArchState *env)
uint16_t pagesize, stlb_ps;
uint16_t asid, tlb_asid;
LoongArchTLB *tlb;
uint8_t tlb_e;
uint8_t tlb_e, tlb_g;
if (FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR)) {
entryhi = env->CSR_TLBREHI;
@@ -400,7 +400,8 @@ void helper_tlbfill(CPULoongArchState *env)
}
tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
if (asid != tlb_asid) {
tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
if (tlb_g == 0 && asid != tlb_asid) {
set = i;
}
}
@@ -423,7 +424,8 @@ void helper_tlbfill(CPULoongArchState *env)
}
tlb_asid = FIELD_EX64(tlb->tlb_misc, TLB_MISC, ASID);
if (asid != tlb_asid) {
tlb_g = FIELD_EX64(tlb->tlb_entry0, TLBENTRY, G);
if (tlb_g == 0 && asid != tlb_asid) {
index = i;
}
}