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: ?ں?????cpu_suspend????:
arch/arm/kernel/suspend.c:56:32: ??????????ָ??????ȫ???͵?ָ??
arch/arm/kernel/suspend.c:70:3: ????????ʽ??????????cpu_switch_mm?? [-Werror=implicit-function-declaration]
arch/arm/kernel/suspend.c:71:3: ????????ʽ??????????local_flush_bp_all?? [-Werror=implicit-function-declaration]
arch/arm/kernel/suspend.c:72:3: ????????ʽ??????????local_flush_tlb_all?? [-Werror=implicit-function-declaration]
I want to be sure whether we can bear it ?
thanks.
--
Chen Gang
Asianux Corporation
also has additional information (maybe useful):
arch/arm/kernel/entry-armv.S:404:2: ???棺#warning "NPTL on non MMU needs fixing" [-Wcpp]
arch/arm/kernel/entry-armv.S:867:2: ???棺#warning "NPTL on non MMU needs fixing" [-Wcpp]
arch/arm/kernel/entry-armv.S:940:2: ???棺#warning "NPTL on non MMU needs fixing" [-Wcpp]
?? 2013??03??14?? 11:44, Chen Gang д??:
> 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: ?ں?????cpu_suspend????:
> arch/arm/kernel/suspend.c:56:32: ??????????ָ??????ȫ???͵?ָ??
> arch/arm/kernel/suspend.c:70:3: ????????ʽ??????????cpu_switch_mm?? [-Werror=implicit-function-declaration]
> arch/arm/kernel/suspend.c:71:3: ????????ʽ??????????local_flush_bp_all?? [-Werror=implicit-function-declaration]
> arch/arm/kernel/suspend.c:72:3: ????????ʽ??????????local_flush_tlb_all?? [-Werror=implicit-function-declaration]
>
> I want to be sure whether we can bear it ?
>
> thanks.
>
--
Chen Gang
Asianux Corporation
Hi Chen,
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.
Jonny
于 2013年03月14日 21:25, Jonathan Austin 写道:
>
> 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.
>
> Jonny
thank you.
:-)
--
Chen Gang
Asianux Corporation
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.
Will
On 2013年03月17日 22:40, Will Deacon wrote:
> 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.
excuse me, I am not familiar with ARM, so can not provide more ideas.
but at least for me, I think what you said seems valuable.
welcome any ARM experts to reply.
thanks.
:-)
--
Chen Gang
Asianux Corporation