From: Bibo Mao <maobibo@loongson.cn>
Date: Thu, 4 Sep 2025 11:11:25 +0000 (+0800)
Subject: target/loongarch: Only flush one TLB entry in helper_invtlb_page_asid_or_g()
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=66746876fed5eb3c04c2f958bef927df3389d42c;p=thirdparty%2Fqemu.git

target/loongarch: Only flush one TLB entry in helper_invtlb_page_asid_or_g()

With function helper_invtlb_page_asid_or_g(), only one TLB entry in
LoongArch emulated TLB is invalidated. so with QEMU TLB, it is not
necessary to flush all QEMU TLB, only flush address range specified
LoongArch emulated TLB is ok. Here invalidate_tlb_entry() is called
so that only QEMU TLB entry with specified address range is flushed.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/target/loongarch/tcg/tlb_helper.c b/target/loongarch/tcg/tlb_helper.c
index b777f68f714..243f9456129 100644
--- a/target/loongarch/tcg/tlb_helper.c
+++ b/target/loongarch/tcg/tlb_helper.c
@@ -556,8 +556,7 @@ void helper_invtlb_page_asid_or_g(CPULoongArchState *env,
     func = tlb_match_any;
     tlb = loongarch_tlb_search_cb(env, addr, asid, func);
     if (tlb) {
-        tlb->tlb_misc = FIELD_DP64(tlb->tlb_misc, TLB_MISC, E, 0);
-        tlb_flush(env_cpu(env));
+        invalidate_tlb(env, tlb - env->tlb);
     }
 }