On Fri, Oct 11, 2013 at 03:15:38PM -0700, ebied...@xmission.com wrote:
Daniel Kiper daniel.ki...@oracle.com writes:
On Fri, Oct 11, 2013 at 03:08:43AM -0700, ebied...@xmission.com wrote:
Daniel Kiper daniel.ki...@oracle.com writes:
[...]
What is your opinion in that case?
I can see
Hi,
Could you explain why do you clear all registers just before jumping
into purgatory (please look into arch/x86/kernel/relocate_kernel_64.S
for more details)? There is no any single word about that. I do not
count comment which states what is going on. purgatory on entry does
not assume any
Daniel Kiper daniel.ki...@oracle.com writes:
Hi,
Could you explain why do you clear all registers just before jumping
into purgatory (please look into arch/x86/kernel/relocate_kernel_64.S
for more details)? There is no any single word about that. I do not
count comment which states what is
On Fri, Oct 11, 2013 at 03:08:43AM -0700, ebied...@xmission.com wrote:
Daniel Kiper daniel.ki...@oracle.com writes:
Hi,
Could you explain why do you clear all registers just before jumping
into purgatory (please look into arch/x86/kernel/relocate_kernel_64.S
for more details)? There is
On Fri, Oct 11, 2013 at 01:04:55PM +0200, Daniel Kiper wrote:
[..]
In theory you can swap between to kernels with the preserve_context
case. Technically I like the ability but I don't know that it has ever
achieved much uptake.
I think that this is nice idea too. However, I have not
On Fri, Oct 11, 2013 at 08:52:06AM -0400, Vivek Goyal wrote:
On Fri, Oct 11, 2013 at 01:04:55PM +0200, Daniel Kiper wrote:
[..]
In theory you can swap between to kernels with the preserve_context
case. Technically I like the ability but I don't know that it has ever
achieved much
On Fri, Oct 11, 2013 at 04:37:27PM +0100, Matthew Garrett wrote:
On Fri, Oct 11, 2013 at 08:52:06AM -0400, Vivek Goyal wrote:
On Fri, Oct 11, 2013 at 01:04:55PM +0200, Daniel Kiper wrote:
[..]
In theory you can swap between to kernels with the preserve_context
case. Technically I
On Fri, Oct 11, 2013 at 11:44:50AM -0400, Vivek Goyal wrote:
Just Curious. How is it useful. IOW, what's your use case of booting a new
kernel and then jumping back.
I'm kexecing into a kernel with a modified /dev/mem, modifying the
original kernel and then jumping back into it.
--
Matthew
On Fri, Oct 11, 2013 at 5:48 PM, Matthew Garrett mj...@srcf.ucam.org wrote:
On Fri, Oct 11, 2013 at 11:44:50AM -0400, Vivek Goyal wrote:
Just Curious. How is it useful. IOW, what's your use case of booting a new
kernel and then jumping back.
I'm kexecing into a kernel with a modified
On Fri, Oct 11, 2013 at 06:33:23PM +0200, Richard Weinberger wrote:
On Fri, Oct 11, 2013 at 5:48 PM, Matthew Garrett mj...@srcf.ucam.org wrote:
On Fri, Oct 11, 2013 at 11:44:50AM -0400, Vivek Goyal wrote:
Just Curious. How is it useful. IOW, what's your use case of booting a new
kernel
On Fri, Oct 11, 2013 at 6:39 PM, Matthew Garrett mj...@srcf.ucam.org wrote:
On Fri, Oct 11, 2013 at 06:33:23PM +0200, Richard Weinberger wrote:
On Fri, Oct 11, 2013 at 5:48 PM, Matthew Garrett mj...@srcf.ucam.org wrote:
On Fri, Oct 11, 2013 at 11:44:50AM -0400, Vivek Goyal wrote:
Just
On Fri, Oct 11, 2013 at 06:42:36PM +0200, Richard Weinberger wrote:
On Fri, Oct 11, 2013 at 6:39 PM, Matthew Garrett mj...@srcf.ucam.org wrote:
On Fri, Oct 11, 2013 at 06:33:23PM +0200, Richard Weinberger wrote:
On Fri, Oct 11, 2013 at 5:48 PM, Matthew Garrett mj...@srcf.ucam.org
wrote:
Am 11.10.2013 18:44, schrieb Matthew Garrett:
On Fri, Oct 11, 2013 at 06:42:36PM +0200, Richard Weinberger wrote:
On Fri, Oct 11, 2013 at 6:39 PM, Matthew Garrett mj...@srcf.ucam.org wrote:
On Fri, Oct 11, 2013 at 06:33:23PM +0200, Richard Weinberger wrote:
On Fri, Oct 11, 2013 at 5:48 PM,
On Fri, Oct 11, 2013 at 05:44:00PM +0100, Matthew Garrett wrote:
On Fri, Oct 11, 2013 at 06:42:36PM +0200, Richard Weinberger wrote:
On Fri, Oct 11, 2013 at 6:39 PM, Matthew Garrett mj...@srcf.ucam.org
wrote:
On Fri, Oct 11, 2013 at 06:33:23PM +0200, Richard Weinberger wrote:
On Fri,
On Fri, Oct 11, 2013 at 12:53:51PM -0400, Vivek Goyal wrote:
On Fri, Oct 11, 2013 at 05:44:00PM +0100, Matthew Garrett wrote:
I have /dev/mem and a list of addresses I want to modify.
Why to boot in a second kernel to modify first kernel's RAM. Why not
do it directly from the first kernel
On Fri, Oct 11, 2013 at 06:47:19PM +0200, Richard Weinberger wrote:
But you still need a magic tool which create you this list.
I just read /proc/kallsyms. I'm really not doing anything complicated.
If you have a tool which takes two kernel images and create such
a delta, fine.
Isn't that
Am 11.10.2013 18:55, schrieb Matthew Garrett:
On Fri, Oct 11, 2013 at 06:47:19PM +0200, Richard Weinberger wrote:
But you still need a magic tool which create you this list.
I just read /proc/kallsyms. I'm really not doing anything complicated.
If you have a tool which takes two kernel
On Fri, Oct 11, 2013 at 06:59:41PM +0200, Richard Weinberger wrote:
Am 11.10.2013 18:55, schrieb Matthew Garrett:
On Fri, Oct 11, 2013 at 06:47:19PM +0200, Richard Weinberger wrote:
But you still need a magic tool which create you this list.
I just read /proc/kallsyms. I'm really not
Matthew Garrett mj...@srcf.ucam.org writes:
On Fri, Oct 11, 2013 at 06:59:41PM +0200, Richard Weinberger wrote:
Am 11.10.2013 18:55, schrieb Matthew Garrett:
On Fri, Oct 11, 2013 at 06:47:19PM +0200, Richard Weinberger wrote:
But you still need a magic tool which create you this list.
On Fri, Oct 11, 2013 at 01:44:19PM -0700, Eric W. Biederman wrote:
Matthew Garrett mj...@srcf.ucam.org writes:
No, I manually look up some addresses from /proc/kallsyms and then
modify them in the second kernel.
An interesting approach I think most of the rest of us would have just
built
Daniel Kiper daniel.ki...@oracle.com writes:
On Fri, Oct 11, 2013 at 03:08:43AM -0700, ebied...@xmission.com wrote:
Daniel Kiper daniel.ki...@oracle.com writes:
Hi,
Could you explain why do you clear all registers just before jumping
into purgatory (please look into
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