Received-SPF: pass (google.com: domain of linux-kernel+bounces-202283-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
From: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= <bjorn@kernel.org>
To: Alexandre Ghiti <alexghiti@rivosinc.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	David Hildenbrand <david@redhat.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	linux-riscv@lists.infradead.org,
	Oscar Salvador <osalvador@suse.de>
Cc: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= <bjorn@rivosinc.com>,
	Andrew Bresticker <abrestic@rivosinc.com>,
	Chethan Seshadri <Chethan.Seshadri@catalinasystems.io>,
	Lorenzo Stoakes <lstoakes@gmail.com>,
	Santosh Mamila <santosh.mamila@catalinasystems.io>,
	Sivakumar Munnangi <siva.munnangi@catalinasystems.io>,
	Sunil V L <sunilvl@ventanamicro.com>,
	linux-kernel@vger.kernel.org,
	linux-mm@kvack.org,
	virtualization@lists.linux-foundation.org
Subject: [PATCH v4 08/11] riscv: Enable memory hotplugging for RISC-V
Date: Wed,  5 Jun 2024 13:40:51 +0200
Message-ID: <20240605114100.315918-9-bjorn@kernel.org>
In-Reply-To: <20240605114100.315918-1-bjorn@kernel.org>
References: <20240605114100.315918-1-bjorn@kernel.org>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Björn Töpel <bjorn@rivosinc.com>

Enable ARCH_ENABLE_MEMORY_HOTPLUG and ARCH_ENABLE_MEMORY_HOTREMOVE for
RISC-V.

Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
---
 arch/riscv/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 0525ee2d63c7..8d860ad3b171 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_VMEMMAP
+	select ARCH_ENABLE_MEMORY_HOTREMOVE if MEMORY_HOTPLUG
 	select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
 	select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
 	select ARCH_HAS_BINFMT_FLAT
@@ -46,6 +48,7 @@ config RISCV
 	select ARCH_HAS_UBSAN
 	select ARCH_HAS_VDSO_DATA
 	select ARCH_KEEP_MEMBLOCK if ACPI
+	select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE	if 64BIT && MMU
 	select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
 	select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT
 	select ARCH_STACKWALK
-- 
2.43.0