Re: Booting new kernel from running kernel
Frank Smith wrote: > > Hi, > > I'm trying to figure out a way to immediately boot a > new kernel from within a running system. I do not > care about gracefully shutting down the first kernel.. > once I decide to run the new kernel, I'll abandon the > first. Take a look at http://www.scyld.com/software/monte.html -- David N. Lombard MSC.Software - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Booting new kernel from running kernel
Hi, I'm trying to figure out a way to immediately boot a new kernel from within a running system. I do not care about gracefully shutting down the first kernel.. once I decide to run the new kernel, I'll abandon the first. I'm running from a system that consists of a kernel + initrd, and I'm running completely from the ramdisk. No disk, no lilo. This is a PowerPC system. Let's say I fetch a znetboot.initrd from somewhere. How do I get this new system to boot from my running system? Another way to look at this is that I want to use the first Linux kernel as a boot loader for the second. Some of the issues I see so far... I need to get the znetboot.initrd image into contiguous physical memory, without having previously reserved a sufficiently large space, so I can force a jump to the proper entry point, and initiate the normal Linux boot. It's trivial to get the image into a contiguous virtual space, but how does one allocate several megabytes of contiguous RAM in physical space, on the fly in a running system? Please CC: replies to me as I'm not subscribed to this list. Thanks, Frank. --- Frank Smith, MCompSci Principal Software Designer [EMAIL PROTECTED] AMIRIX Systems Inc. http://www.amirix.com/ Embedded Debian Project http://www.emdebian.org/ 77 Chain Lake Drive 902-450-1700 x289 (Phone) Halifax, N.S. B3S 1E1902-450-1704 (FAX) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Booting new kernel from running kernel
Hi, I'm trying to figure out a way to immediately boot a new kernel from within a running system. I do not care about gracefully shutting down the first kernel.. once I decide to run the new kernel, I'll abandon the first. I'm running from a system that consists of a kernel + initrd, and I'm running completely from the ramdisk. No disk, no lilo. This is a PowerPC system. Let's say I fetch a znetboot.initrd from somewhere. How do I get this new system to boot from my running system? Another way to look at this is that I want to use the first Linux kernel as a boot loader for the second. Some of the issues I see so far... I need to get the znetboot.initrd image into contiguous physical memory, without having previously reserved a sufficiently large space, so I can force a jump to the proper entry point, and initiate the normal Linux boot. It's trivial to get the image into a contiguous virtual space, but how does one allocate several megabytes of contiguous RAM in physical space, on the fly in a running system? Please CC: replies to me as I'm not subscribed to this list. Thanks, Frank. --- Frank Smith, MCompSci Principal Software Designer [EMAIL PROTECTED] AMIRIX Systems Inc. http://www.amirix.com/ Embedded Debian Project http://www.emdebian.org/ 77 Chain Lake Drive 902-450-1700 x289 (Phone) Halifax, N.S. B3S 1E1902-450-1704 (FAX) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: Booting new kernel from running kernel
Frank Smith wrote: Hi, I'm trying to figure out a way to immediately boot a new kernel from within a running system. I do not care about gracefully shutting down the first kernel.. once I decide to run the new kernel, I'll abandon the first. Take a look at http://www.scyld.com/software/monte.html -- David N. Lombard MSC.Software - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
