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Tue, 14 May 2024 13:40:29 -0700 (PDT) Received: from [172.21.1.2] ([50.204.89.31]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1ef0b9d40besm104795205ad.42.2024.05.14.13.40.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 May 2024 13:40:28 -0700 (PDT) Message-ID: <6f6b0577-51af-4fdf-a46a-d50787346150@redhat.com> Date: Tue, 14 May 2024 22:40:27 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 6/8] riscv: Enable memory hotplugging for RISC-V To: =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , Alexandre Ghiti Cc: Albert Ou , Palmer Dabbelt , Paul Walmsley , linux-riscv@lists.infradead.org, =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , Andrew Bresticker , Chethan Seshadri , Lorenzo Stoakes , Oscar Salvador , Santosh Mamila , Sivakumar Munnangi , Sunil V L , linux-kernel@vger.kernel.org, linux-mm@kvack.org, virtualization@lists.linux-foundation.org References: <20240514140446.538622-1-bjorn@kernel.org> <20240514140446.538622-7-bjorn@kernel.org> <87r0e4l0m6.fsf@all.your.base.are.belong.to.us> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 0E64214000F X-Stat-Signature: jxxu7j6unb6ahc8ip1dy4oaagw5x17qc X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1715719237-935362 X-HE-Meta: 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 W+B86qfm 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 14.05.24 20:17, Björn Töpel wrote: > Alexandre Ghiti writes: > >> On Tue, May 14, 2024 at 4:05 PM Björn Töpel wrote: >>> >>> From: Björn Töpel >>> >>> Enable ARCH_ENABLE_MEMORY_HOTPLUG and ARCH_ENABLE_MEMORY_HOTREMOVE for >>> RISC-V. >>> >>> Signed-off-by: Björn Töpel >>> --- >>> arch/riscv/Kconfig | 2 ++ >>> 1 file changed, 2 insertions(+) >>> >>> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig >>> index 6bec1bce6586..b9398b64bb69 100644 >>> --- a/arch/riscv/Kconfig >>> +++ b/arch/riscv/Kconfig >>> @@ -16,6 +16,8 @@ config RISCV >>> select ACPI_REDUCED_HARDWARE_ONLY if ACPI >>> select ARCH_DMA_DEFAULT_COHERENT >>> select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION >>> + select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && 64BIT && MMU >> >> I think this should be SPARSEMEM_VMEMMAP here. > > Hmm, care to elaborate? I thought that was optional. There was a discussion at LSF/MM today to maybe require SPARSEMEM_VMEMMAP for hotplug. Would that work here as well? -- Cheers, David / dhildenb