linux-kernel - Re: [RFC PATCH v3 1/2] arm64: tlb: Detect the ARMv8.4 TLBI RANGE feature

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Message-ID: <9189159f-0df8-ef9a-5216-adc030856439@huawei.com>
Date:   Mon, 18 May 2020 20:29:39 +0800
From:   Zhenyu Ye <yezhenyu2@...wei.com>
To:     Anshuman Khandual <anshuman.khandual@....com>,
        Mark Rutland <mark.rutland@....com>
CC:     <will@...nel.org>, <catalin.marinas@....com>,
        <suzuki.poulose@....com>, <maz@...nel.org>, <steven.price@....com>,
        <guohanjun@...wei.com>, <olof@...om.net>,
        <linux-arch@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <xiexiangyou@...wei.com>, <zhangshaokun@...ilicon.com>,
        <linux-mm@...ck.org>, <arm@...nel.org>, <prime.zeng@...ilicon.com>,
        <kuhn.chenqun@...wei.com>, <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC PATCH v3 1/2] arm64: tlb: Detect the ARMv8.4 TLBI RANGE
 feature

Hi Anshuman,

On 2020/5/18 12:22, Anshuman Khandual wrote:
>>>>  static const struct arm64_ftr_bits ftr_id_aa64isar0[] = {
>>>>  	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_RNDR_SHIFT, 4, 0),
>>>> +	ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR0_TLBI_RANGE_SHIFT, 4, 0),
> 
> Hello Zhenyu,
> 
> This is already being added through another patch [1] in a series [2] which primarily
> has cpufeature changes. I will soon update the series making this feature FTR_HIDDEN.
> 
> [1] https://patchwork.kernel.org/patch/11523881/
> [2] https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=281211
> 
> I am planning to respin the series (V4) based on arm64 tree (for-next/cpufeature). So
> could you please rebase this patch (probably dropping cpufeature related changes) on
> upcoming V4, so that all the changes will be based on arm64 tree (for-next/cpufeature).
> 
> - Anshuman
> 

OK, I will rebase my patch based on your V4.

Zhenyu