From: Richard Henderson <richard.henderson@linaro.org>
To: "Bibo Mao" <maobibo@loongson.cn>,
"Song Gao" <gaosong@loongson.cn>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>, qemu-devel@nongnu.org
Subject: Re: [PATCH v3 04/12] target/loongarch: Update TLB index selection method
Date: Wed, 3 Sep 2025 15:09:18 +0200 [thread overview]
Message-ID: <1b542ce0-33f9-4967-8402-53ce9c2e0d96@linaro.org> (raw)
In-Reply-To: <20250903084827.3085911-5-maobibo@loongson.cn>
On 9/3/25 10:48, Bibo Mao wrote:
> With function helper_tlbfill(), since there is no suitable TLB entry,
> new TLB will be added and invalidate one old TLB entry. The old TLB
> entry index is selected randomly, instead it can be optimized as
> following:
> 1. invalid TLB entry can be selected at first.
> 2. TLB entry with other ASID can be selected secondly
> 3. random method is used by last.
>
> Signed-off-by: Bibo Mao<maobibo@loongson.cn>
> ---
> target/loongarch/tcg/tlb_helper.c | 49 ++++++++++++++++++++++++++-----
> 1 file changed, 42 insertions(+), 7 deletions(-)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
next prev parent reply other threads:[~2025-09-03 13:09 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-03 8:48 [PATCH v3 00/12] target/loongarch: Small enhancement about TLB flush Bibo Mao
2025-09-03 8:48 ` [PATCH v3 01/12] target/loongarch: Use mmu idx bitmap method when flush TLB Bibo Mao
2025-09-03 13:02 ` Richard Henderson
2025-09-04 7:23 ` Bibo Mao
2025-09-03 8:48 ` [PATCH v3 02/12] target/loongarch: Add parameter tlb pointer with fill_tlb_entry Bibo Mao
2025-09-03 8:48 ` [PATCH v3 03/12] target/loongarch: Reduce TLB flush with helper_tlbwr Bibo Mao
2025-09-03 13:07 ` Richard Henderson
2025-09-04 7:28 ` Bibo Mao
2025-09-03 8:48 ` [PATCH v3 04/12] target/loongarch: Update TLB index selection method Bibo Mao
2025-09-03 13:09 ` Richard Henderson [this message]
2025-09-03 8:48 ` [PATCH v3 05/12] target/loongarch: Fix page size set issue with CSR_STLBPS Bibo Mao
2025-09-03 8:48 ` [PATCH v3 06/12] target/loongarch: Add tlb search callback in loongarch_tlb_search() Bibo Mao
2025-09-03 13:14 ` Richard Henderson
2025-09-04 7:46 ` Bibo Mao
2025-09-03 8:48 ` [PATCH v3 07/12] target/loongarch: Add common API loongarch_tlb_search_cb() Bibo Mao
2025-09-03 13:16 ` Richard Henderson
2025-09-03 8:48 ` [PATCH v3 08/12] target/loongarch: Use loongarch_tlb_search_cb in helper_invtlb_page_asid_or_g Bibo Mao
2025-09-03 13:20 ` Richard Henderson
2025-09-04 9:17 ` Bibo Mao
2025-09-03 8:48 ` [PATCH v3 09/12] target/loongarch: Use loongarch_tlb_search_cb in helper_invtlb_page_asid Bibo Mao
2025-09-03 13:21 ` Richard Henderson
2025-09-04 9:52 ` Bibo Mao
2025-09-03 8:48 ` [PATCH v3 10/12] target/loongarch: Invalid tlb entry in invalidate_tlb() Bibo Mao
2025-09-03 13:00 ` Richard Henderson
2025-09-04 10:04 ` Bibo Mao
2025-09-03 8:53 ` [PATCH v3 11/12] target/loongarch: Only flush one TLB entry in helper_invtlb_page_asid_or_g() Bibo Mao
2025-09-03 12:56 ` Richard Henderson
2025-09-03 8:54 ` [PATCH v3 12/12] target/loongarch: Only flush one TLB entry in helper_invtlb_page_asid() Bibo Mao
2025-09-03 12:56 ` Richard Henderson
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