* 32 bit kernel on 64 bit machine
[not found] <CAMGjyMt-3Ncr8VHpPMBVhJ27kh-jw47G8QZpeg4vfG3gY7g7KQ@mail.gmail.com>
@ 2012-04-20 3:45 ` er krishna
2012-04-20 3:49 ` Graeme Russ
0 siblings, 1 reply; 6+ messages in thread
From: er krishna @ 2012-04-20 3:45 UTC (permalink / raw)
To: kernelnewbies
Hi All,
Is it possible to boot the 64 bit machine through 32 bit compiled kernel ?
I tried its compilation on fedora 16 64 bit and intel sandybridge 64 bit
with following option:
$ make ARCH=i386 menuconfig
$ make ARCH=i386 ?j4
but it failed to boot. Any suggestion if it can be done by any way.
Best Regards,
Krishna
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* 32 bit kernel on 64 bit machine
2012-04-20 3:45 ` 32 bit kernel on 64 bit machine er krishna
@ 2012-04-20 3:49 ` Graeme Russ
[not found] ` <CAMGjyMtoyNRUdvRbDFvjaY2kxZQSG8rZxjBGUcswK7+O7OxuEg@mail.gmail.com>
0 siblings, 1 reply; 6+ messages in thread
From: Graeme Russ @ 2012-04-20 3:49 UTC (permalink / raw)
To: kernelnewbies
Hi Krishna,
On Fri, Apr 20, 2012 at 1:45 PM, er krishna <erkrishna@gmail.com> wrote:
> Hi All,
>
> Is it possible to boot the 64 bit machine through 32 bit compiled kernel ? I
Yes
> tried its compilation on fedora 16 64 bit and intel sandybridge 64 bit with
> following option:
>
>
> $ make ARCH=i386 menuconfig
>
> $ make ARCH=i386 ?j4
>
>
> but it failed to boot. Any suggestion if it can be done by any way.
You cannot use a 32-bit kernel with 64-bit user-space
Regards,
Graeme
^ permalink raw reply [flat|nested] 6+ messages in thread
* 32 bit kernel on 64 bit machine
[not found] ` <CAMGjyMtoyNRUdvRbDFvjaY2kxZQSG8rZxjBGUcswK7+O7OxuEg@mail.gmail.com>
@ 2012-04-20 4:16 ` Graeme Russ
2012-04-20 4:37 ` er krishna
0 siblings, 1 reply; 6+ messages in thread
From: Graeme Russ @ 2012-04-20 4:16 UTC (permalink / raw)
To: kernelnewbies
Hi Krishna,
Please keep ML Cc'd
On Fri, Apr 20, 2012 at 1:57 PM, er krishna <erkrishna@gmail.com> wrote:
> Graeme,
>
> Thanks for the reply.
>
> On Fri, Apr 20, 2012 at 11:49 AM, Graeme Russ <graeme.russ@gmail.com> wrote:
>>
>> Hi Krishna,
>>
>> On Fri, Apr 20, 2012 at 1:45 PM, er krishna <erkrishna@gmail.com> wrote:
>> > Hi All,
>> >
>> > Is it possible to boot the 64 bit machine through 32 bit compiled kernel
>> > ? I
>>
>> Yes
>
>
> How ? What are the exact steps ? I mean how I will compile the kernel (flags
> and all) that will boot on 64 bit processor ? My problem is I have 64 bit
> fc16 and Sandybridge 64 bit machine. I need to compile the kernel for 32 bit
> with these setup and boot it.
The steps you performed I believe will have built a 32-bit kernel
>> > tried its compilation on fedora 16 64 bit and intel sandybridge 64 bit
>> > with
>> > following option:
>> >
>> >
>> > $ make ARCH=i386 menuconfig
>> >
>> > $ make ARCH=i386 ?j4
>> >
>> >
>> > but it failed to boot. Any suggestion if it can be done by any way.
>>
>> You cannot use a 32-bit kernel with 64-bit user-space
>>
>
> Sorry, I didn't get you here. Do you mean to say that 64 bit application
> won't work on 32 bit kernel. if its then its fine.
Yes, that is what I mean't - If all you userspace (libraries,
applications etc) are 64-bit then a 32-bit kernel cannot run them. You
should have at least got a kernel panic that init could not be run
By 'fine' you mean that your setup is fine and you tried to run the
32-bit kernel using 32-bit userspace? If so, there is obviously
another problem.
Regards,
Graeme
^ permalink raw reply [flat|nested] 6+ messages in thread
* 32 bit kernel on 64 bit machine
2012-04-20 4:16 ` Graeme Russ
@ 2012-04-20 4:37 ` er krishna
2012-04-20 4:41 ` Graeme Russ
0 siblings, 1 reply; 6+ messages in thread
From: er krishna @ 2012-04-20 4:37 UTC (permalink / raw)
To: kernelnewbies
On Apr 20, 2012 12:16 PM, "Graeme Russ" <graeme.russ@gmail.com> wrote:
>
> Hi Krishna,
>
> Please keep ML Cc'd
yep
>
> On Fri, Apr 20, 2012 at 1:57 PM, er krishna <erkrishna@gmail.com> wrote:
> > Graeme,
> >
> > Thanks for the reply.
> >
> > On Fri, Apr 20, 2012 at 11:49 AM, Graeme Russ <graeme.russ@gmail.com>
wrote:
> >>
> >> Hi Krishna,
> >>
> >> On Fri, Apr 20, 2012 at 1:45 PM, er krishna <erkrishna@gmail.com>
wrote:
> >> > Hi All,
> >> >
> >> > Is it possible to boot the 64 bit machine through 32 bit compiled
kernel
> >> > ? I
> >>
> >> Yes
> >
> >
> > How ? What are the exact steps ? I mean how I will compile the kernel
(flags
> > and all) that will boot on 64 bit processor ? My problem is I have 64
bit
> > fc16 and Sandybridge 64 bit machine. I need to compile the kernel for
32 bit
> > with these setup and boot it.
>
> The steps you performed I believe will have built a 32-bit kernel
yes but when booted it panic during initramfs stage.
>
> >> > tried its compilation on fedora 16 64 bit and intel sandybridge 64
bit
> >> > with
> >> > following option:
> >> >
> >> >
> >> > $ make ARCH=i386 menuconfig
> >> >
> >> > $ make ARCH=i386 ?j4
> >> >
> >> >
> >> > but it failed to boot. Any suggestion if it can be done by any way.
> >>
> >> You cannot use a 32-bit kernel with 64-bit user-space
> >>
> >
> > Sorry, I didn't get you here. Do you mean to say that 64 bit application
> > won't work on 32 bit kernel. if its then its fine.
>
> Yes, that is what I mean't - If all you userspace (libraries,
> applications etc) are 64-bit then a 32-bit kernel cannot run them. You
> should have at least got a kernel panic that init could not be run
>
application will not run that i m agreed but the booting should be smooth.
Isnt it?
I got panic during early stage of booting before calling of init.
> By 'fine' you mean that your setup is fine and you tried to run the
No it was not intended to say like this. But first of all booting didnt
happen.
So there is no point of trying any application.
Can you pls tell that booting and 32 bit application should run smoothly?
> 32-bit kernel using 32-bit userspace? If so, there is obviously
> another problem.
Watt problem?
>
> Regards,
>
> Graeme
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* 32 bit kernel on 64 bit machine
2012-04-20 4:37 ` er krishna
@ 2012-04-20 4:41 ` Graeme Russ
2012-04-20 4:54 ` er krishna
0 siblings, 1 reply; 6+ messages in thread
From: Graeme Russ @ 2012-04-20 4:41 UTC (permalink / raw)
To: kernelnewbies
Hi Krishna,
On Fri, Apr 20, 2012 at 2:37 PM, er krishna <erkrishna@gmail.com> wrote:
>
> On Apr 20, 2012 12:16 PM, "Graeme Russ" <graeme.russ@gmail.com> wrote:
>>
>> Hi Krishna,
>>
>> Please keep ML Cc'd
> yep
>
>>
>> On Fri, Apr 20, 2012 at 1:57 PM, er krishna <erkrishna@gmail.com> wrote:
>> > Graeme,
>> >
>> > Thanks for the reply.
>> >
>> > On Fri, Apr 20, 2012 at 11:49 AM, Graeme Russ <graeme.russ@gmail.com>
>> > wrote:
>> >>
>> >> Hi Krishna,
>> >>
>> >> On Fri, Apr 20, 2012 at 1:45 PM, er krishna <erkrishna@gmail.com>
>> >> wrote:
>> >> > Hi All,
>> >> >
>> >> > Is it possible to boot the 64 bit machine through 32 bit compiled
>> >> > kernel
>> >> > ? I
>> >>
>> >> Yes
>> >
>> >
>> > How ? What are the exact steps ? I mean how I will compile the kernel
>> > (flags
>> > and all) that will boot on 64 bit processor ? My problem is I have 64
>> > bit
>> > fc16 and Sandybridge 64 bit machine. I need to compile the kernel for 32
>> > bit
>> > with these setup and boot it.
>>
>> The steps you performed I believe will have built a 32-bit kernel
> yes but when booted it panic during initramfs stage.
Is the initramfs the Fedora init ramfs? If so, maybe it has 64-bit user space
>> >> > tried its compilation on fedora 16 64 bit and intel sandybridge 64
>> >> > bit
>> >> > with
>> >> > following option:
>> >> >
>> >> >
>> >> > $ make ARCH=i386 menuconfig
>> >> >
>> >> > $ make ARCH=i386 ?j4
>> >> >
>> >> >
>> >> > but it failed to boot. Any suggestion if it can be done by any way.
>> >>
>> >> You cannot use a 32-bit kernel with 64-bit user-space
>> >>
>> >
>> > Sorry, I didn't get you here. Do you mean to say that 64 bit application
>> > won't work on 32 bit kernel. if its then its fine.
>>
>> Yes, that is what I mean't - If all you userspace (libraries,
>> applications etc) are 64-bit then a 32-bit kernel cannot run them. You
>> should have at least got a kernel panic that init could not be run
>>
> application will not run that i m agreed but the booting should be smooth.
> Isnt it?
>
> I got panic during early stage of booting before calling of init.
Can you post a log? You'll need to setup logging to serial or net console
>> By 'fine' you mean that your setup is fine and you tried to run the
>
> No it was not intended to say like this.? But first of all booting didnt
> happen.
> So there is no point of trying any application.
>
> Can you pls tell that booting and 32 bit application should run smoothly?
>
>> 32-bit kernel using 32-bit userspace? If so, there is obviously
>> another problem.
>
> Watt problem?
I would say the initramfs contains 64-bit user-space
Regards,
Graeme
^ permalink raw reply [flat|nested] 6+ messages in thread
* 32 bit kernel on 64 bit machine
2012-04-20 4:41 ` Graeme Russ
@ 2012-04-20 4:54 ` er krishna
0 siblings, 0 replies; 6+ messages in thread
From: er krishna @ 2012-04-20 4:54 UTC (permalink / raw)
To: kernelnewbies
On Apr 20, 2012 12:41 PM, "Graeme Russ" <graeme.russ@gmail.com> wrote:
>
> Hi Krishna,
>
> On Fri, Apr 20, 2012 at 2:37 PM, er krishna <erkrishna@gmail.com> wrote:
> >
> > On Apr 20, 2012 12:16 PM, "Graeme Russ" <graeme.russ@gmail.com> wrote:
> >>
> >> Hi Krishna,
> >>
> >> Please keep ML Cc'd
> > yep
> >
> >>
> >> On Fri, Apr 20, 2012 at 1:57 PM, er krishna <erkrishna@gmail.com>
wrote:
> >> > Graeme,
> >> >
> >> > Thanks for the reply.
> >> >
> >> > On Fri, Apr 20, 2012 at 11:49 AM, Graeme Russ <graeme.russ@gmail.com>
> >> > wrote:
> >> >>
> >> >> Hi Krishna,
> >> >>
> >> >> On Fri, Apr 20, 2012 at 1:45 PM, er krishna <erkrishna@gmail.com>
> >> >> wrote:
> >> >> > Hi All,
> >> >> >
> >> >> > Is it possible to boot the 64 bit machine through 32 bit compiled
> >> >> > kernel
> >> >> > ? I
> >> >>
> >> >> Yes
> >> >
> >> >
> >> > How ? What are the exact steps ? I mean how I will compile the kernel
> >> > (flags
> >> > and all) that will boot on 64 bit processor ? My problem is I have 64
> >> > bit
> >> > fc16 and Sandybridge 64 bit machine. I need to compile the kernel
for 32
> >> > bit
> >> > with these setup and boot it.
> >>
> >> The steps you performed I believe will have built a 32-bit kernel
> > yes but when booted it panic during initramfs stage.
>
> Is the initramfs the Fedora init ramfs? If so, maybe it has 64-bit user
space
Yes and maybe it can b the problem. Let me do a lil bit more debugging and
then I will back on this. Thx for the kind suggestion.
>
> >> >> > tried its compilation on fedora 16 64 bit and intel sandybridge 64
> >> >> > bit
> >> >> > with
> >> >> > following option:
> >> >> >
> >> >> >
> >> >> > $ make ARCH=i386 menuconfig
> >> >> >
> >> >> > $ make ARCH=i386 ?j4
> >> >> >
> >> >> >
> >> >> > but it failed to boot. Any suggestion if it can be done by any
way.
> >> >>
> >> >> You cannot use a 32-bit kernel with 64-bit user-space
> >> >>
> >> >
> >> > Sorry, I didn't get you here. Do you mean to say that 64 bit
application
> >> > won't work on 32 bit kernel. if its then its fine.
> >>
> >> Yes, that is what I mean't - If all you userspace (libraries,
> >> applications etc) are 64-bit then a 32-bit kernel cannot run them. You
> >> should have at least got a kernel panic that init could not be run
> >>
> > application will not run that i m agreed but the booting should be
smooth.
> > Isnt it?
> >
> > I got panic during early stage of booting before calling of init.
>
> Can you post a log? You'll need to setup logging to serial or net console
>
> >> By 'fine' you mean that your setup is fine and you tried to run the
> >
> > No it was not intended to say like this. But first of all booting didnt
> > happen.
> > So there is no point of trying any application.
> >
> > Can you pls tell that booting and 32 bit application should run
smoothly?
> >
> >> 32-bit kernel using 32-bit userspace? If so, there is obviously
> >> another problem.
> >
> > Watt problem?
>
> I would say the initramfs contains 64-bit user-space
>
> Regards,
>
> Graeme
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[not found] <CAMGjyMt-3Ncr8VHpPMBVhJ27kh-jw47G8QZpeg4vfG3gY7g7KQ@mail.gmail.com>
2012-04-20 3:45 ` 32 bit kernel on 64 bit machine er krishna
2012-04-20 3:49 ` Graeme Russ
[not found] ` <CAMGjyMtoyNRUdvRbDFvjaY2kxZQSG8rZxjBGUcswK7+O7OxuEg@mail.gmail.com>
2012-04-20 4:16 ` Graeme Russ
2012-04-20 4:37 ` er krishna
2012-04-20 4:41 ` Graeme Russ
2012-04-20 4:54 ` er krishna
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