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Thu, 5 Feb 2026 09:20:17 +0800 (CST) Received: from [10.67.109.254] (10.67.109.254) by dggpemf500011.china.huawei.com (7.185.36.131) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 5 Feb 2026 09:20:16 +0800 Message-ID: <704d4e92-b1b7-5506-568a-92605086f376@huawei.com> Date: Thu, 5 Feb 2026 09:20:15 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.2.0 Subject: Re: [PATCH v12 00/13] arm64: entry: Convert to Generic Entry Content-Language: en-US To: Will Deacon , Thomas Gleixner References: <20260203133728.848283-1-ruanjinjie@huawei.com> <87bji552uk.ffs@tglx> <2699bcdc-8d56-7fe9-fa9a-a3d61476e806@huawei.com> <87y0l823o9.ffs@tglx> From: Jinjie Ruan In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.67.109.254] X-ClientProxiedBy: kwepems200002.china.huawei.com (7.221.188.68) To dggpemf500011.china.huawei.com (7.185.36.131) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260204_172027_282235_97782589 X-CRM114-Status: GOOD ( 14.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, kees@kernel.org, catalin.marinas@arm.com, ldv@strace.io, song@kernel.org, linux-kselftest@vger.kernel.org, shuah@kernel.org, linux-arm-kernel@lists.infradead.org, kmal@cock.li, thuth@redhat.com, ryan.roberts@arm.com, anshuman.khandual@arm.com, linux-kernel@vger.kernel.org, kevin.brodsky@arm.com, charlie@rivosinc.com, pengcan@kylinos.cn, broonie@kernel.org, richard.weiyang@gmail.com, dvyukov@google.com, wad@chromium.org, oleg@redhat.com, luto@amacapital.net, liqiang01@kylinos.cn, akpm@linux-foundation.org, reddybalavignesh9979@gmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2026/2/4 20:07, Will Deacon wrote: > On Wed, Feb 04, 2026 at 11:39:34AM +0100, Thomas Gleixner wrote: >> On Wed, Feb 04 2026 at 09:28, Jinjie Ruan wrote: >>> On 2026/2/3 22:16, Thomas Gleixner wrote: >>>> On Tue, Feb 03 2026 at 21:37, Jinjie Ruan wrote: >>>>> Currently, x86, Riscv, Loongarch use the Generic Entry which makes >>>>> maintainers' work easier and codes more elegant. arm64 has already >>>>> successfully switched to the Generic IRQ Entry in commit >>>>> b3cf07851b6c ("arm64: entry: Switch to generic IRQ entry"), it is >>>>> time to completely convert arm64 to Generic Entry. >>>>> >>>>> The goal is to bring arm64 in line with other architectures that already >>>>> use the generic entry infrastructure, reducing duplicated code and >>>>> making it easier to share future changes in entry/exit paths, such as >>>>> "Syscall User Dispatch". >>>>> >>>>> This patch set is rebased on "sched/core". And the performance >>>> >>>> Why are you using sched/core, which contains a lot of unrelated >>>> changes. core/entry is the one which has the prerequisites and nothing >>>> else.... >>> >>> By the way，it looks like core/entry and arm64 for-next/entry have >>> diverged: the first three patches of this series are already in arm64 >>> for-next/entry but missing from core/entry. >>> Perhaps the two branches should be reconciled so that both contain the >>> same baseline. >> >> The first three patches of this series are ARM specific and have nothing >> to do with the queued core/entry changes in tip. They are independent of >> each other and these three ARM64 changes have no business in my tree. >> >> If the ARM64 folks want to apply the rest of your series then they have >> to pull the core/entry branch into their for-next/core branch first so >> the whole thing builds. >> >> But given that the merge window opens on sunday, this is probably moot >> anyway and the rest of this series can go on top of rc1 in the ARM64 >> tree w/o any further complications. > > Yup, the rest of the series (beyond what we've both queued) also needs > some more review so this is all post -rc1 material. Sounds good; I’m looking forward to more expert eyes on the remaining patches once -rc1 is out. > > In the meantime, thanks for picking up the generic bits. > > Cheers, > > Will >