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[221.241.217.81]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2e77e55e030sm3382488a91.37.2024.10.25.06.05.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Oct 2024 06:05:14 -0700 (PDT) Date: Fri, 25 Oct 2024 22:05:11 +0900 Message-ID: From: Hajime Tazaki To: johannes@sipsolutions.net Cc: linux-um@lists.infradead.org, jdike@addtoit.com, richard@nod.at, anton.ivanov@cambridgegreys.com, ricarkol@google.com Subject: Re: [RFC PATCH 13/13] um: nommu: plug nommu code into build system In-Reply-To: References: <82a7ee8b31c51edb47e144922581824a3b5e371d.1729770373.git.thehajime@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/26.3 Mule/6.0 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241025_060516_350291_20D9BD10 X-CRM114-Status: GOOD ( 14.57 ) X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org On Fri, 25 Oct 2024 18:33:06 +0900, Johannes Berg wrote: > > On Thu, 2024-10-24 at 21:09 +0900, Hajime Tazaki wrote: > > > > config MMU > > - bool > > + bool "MMU-based Paged Memory Management Support" > > default y > > "if !64bit" or something not sure if I understand correctly but where do you suggest to add "if !64bit" in this block ? > > config UML_DMA_EMULATION > > @@ -187,8 +190,14 @@ config MAGIC_SYSRQ > > The keys are documented in . Don't say Y > > unless you really know what this hack does. > > > > +config ARCH_FORCE_MAX_ORDER > > + int "Order of maximal physically contiguous allocations" > > + default "10" if MMU > > + default "16" if ! > > Should there even a be user prompt for it? > Perhaps "if EXPERT" or something? I think it's already user-editable but your suggestion is to limit with 'if EXPERT' ? > > config KERNEL_STACK_ORDER > > int "Kernel stack size order" > > + default 3 if !MMU > > default 2 if 64BIT > > range 2 10 if 64BIT > > default 1 if !64BIT > > give a different range for !MMU? will fix it. -- Hajime