Messages in this thread | ![/](/images/icornerl.gif) | | From | David Mosberger <> | Date | Fri, 25 Apr 2003 14:17:25 -0700 | Subject | Re: [PATCH] i386 vsyscall DSO implementation |
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>>>>> On 25 Apr 2003 14:00:53 -0700, "H. Peter Anvin" <hpa@zytor.com> said:
hpa> Followup to: <16041.24730.267207.671647@napali.hpl.hp.com> By hpa> author: David Mosberger <davidm@napali.hpl.hp.com> In hpa> newsgroup: linux.dev.kernel
>> I like this. Even better would be if all platforms could do the >> same. I'm definitely interested in doing something similar for >> ia64 (the getunwind() syscall was always just a stop-gap >> solution).
>> I assume that these kernel ELF images would then show up in >> dl_iterate_phdr()?
>> To complete the picture, it would be nice if the kernel ELF >> images were mappable files (either in /sysfs or /proc) and would >> show up in /proc/PID/maps. That way, a distributed application >> such as a remote debugger could gain access to the kernel unwind >> tables on a remote machine (assuming you have a remote >> filesystem).
hpa> How about /boot?
You mean a regular file? I'm not sure whether this could be made to work. The /proc/PID/maps entry (really: the vm_area for the kernel ELF images) would have to be created by the kernel, at a time when no real filesystem is available. Also, since the kernel needs to store the data in kernel-memory anyhow, I don't think there is much point in storing it on disk as well.
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