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Thu, 17 Sep 2026 13:55:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789653362; bh=AU8CGgy6Pa5vfZgK02vvr6pONCCFzHgT9ly82BtluUM=; h=Date:Subject:From:To:Cc:References:In-Reply-To; b=f0o1NCLoIaKYvHe6FBZBBPQIdVjNHSj17+boe4ixXC3+KOmFDflYlsRC5fnT5VKxe HiRy4SVb68ngiM7azj5+u6m0xyNju5V08cQfHJi2NV7PnWKPKN0HohbudLio9W316d /edQAOX6ErcG27FlD7aI7nIlFvgogzkRyJF2d47a43MYtpOIbd3z+9IDQOratubN4N ZuFV4D+qsmLiDJtiANyhBpkxPnBMa9HwkwVS+ElI9GOaUk8mXNshPSlsKTwpKcv5iZ W69f14zdA0DevKSl2Y8ooTN16Hqf4yJJ0lXRIWagnyzIQCBiYdtgcfS7LhiSuDGGLp iwWBqDVpHt2jw== Message-ID: Date: Thu, 17 Sep 2026 15:55:55 +0200 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 00/10] mm/vmalloc: Speed up ioremap, vmalloc and vmap with contiguous memory From: "Christophe Leroy (CS GROUP)" To: Wen Jiang , akpm@linux-foundation.org, catalin.marinas@arm.com, linux-mm@kvack.org, urezki@gmail.com, will@kernel.org Cc: Xueyuan.chen21@gmail.com, ajd@linux.ibm.com, anshuman.khandual@arm.com, baohua@kernel.org, david@kernel.org, dev.jain@arm.com, jiangwen6@xiaomi.com, leo.yan@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, rppt@kernel.org, ryan.roberts@arm.com References: <20260917052933.188679-1-jiangwenxiaomi@gmail.com> <493ef264-eab3-4be3-a80e-357f01ae1b37@kernel.org> Content-Language: fr-FR In-Reply-To: <493ef264-eab3-4be3-a80e-357f01ae1b37@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Le 17/09/2026 à 14:17, Christophe Leroy (CS GROUP) a écrit : > Hi, > > Le 17/09/2026 à 07:29, Wen Jiang a écrit : >> From: Wen Jiang >> >> This patchset accelerates ioremap, vmalloc, and vmap when the memory is >> physically fully or partially contiguous. Two techniques are used: >> >> 1. Avoid page table rewalk when setting PTEs/PMDs for multiple memory >>     segments >> 2. Use batched mappings wherever possible in both vmalloc and ARM64 >>     layers >> >> Besides accelerating the mapping path, this also enables large >> mappings (PMD and cont-PTE) for vmap, which are currently not >> supported. > > This series doesn't apply. I tried to apply it on top of v7.2, v7.3-rc3 > and next-20260916 > > Can you tell how to apply it ? Finaly I was able to apply it on top of v7.1 Christophe