Messages in this thread | | | Date | Sun, 17 Mar 2013 14:40:30 +0000 | From | Will Deacon <> | Subject | Re: [Suggestion] Latest randconfig build errors for CONFIG_MMU=no |
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On Thu, Mar 14, 2013 at 01:25:56PM +0000, Jonathan Austin wrote: > On 14/03/13 03:44, Chen Gang wrote: > > Hello Maintainers: > > > > when use randconfig: > > make V=1 EXTRA_CFLAGS=-W ARCH=arm randconfig > > (and "grep CONFIG_MMU .config" outputs "# CONFIG_MMU is not set") > > > > the error information: > > arch/arm/kernel/suspend.c: 在函数‘cpu_suspend’中: > > arch/arm/kernel/suspend.c:56:32: 错误:提领指向不完全类型的指针 > > arch/arm/kernel/suspend.c:70:3: 错误:隐式声明函数‘cpu_switch_mm’ [-Werror=implicit-function-declaration] > > arch/arm/kernel/suspend.c:71:3: 错误:隐式声明函数‘local_flush_bp_all’ [-Werror=implicit-function-declaration] > > arch/arm/kernel/suspend.c:72:3: 错误:隐式声明函数‘local_flush_tlb_all’ [-Werror=implicit-function-declaration] > > > > I want to be sure whether we can bear it ? > > > > You're right that at the moment that suspend code is broken for NOMMU. > > However, Will Deacon has a patch to fix it in his nommu branch on > kernel.org: > > https://git.kernel.org/cgit/linux/kernel/git/will/linux.git/commit/?h=nommu > > I'll let Will comment on how/when he might look at proposing that code > to be merged.
I can probably bring that up to speed with -rc2 if people are interested. The tricky part is testing -- I used a software model that had a magic control block for killing off CPUs when I wrote this originally.
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