Re: [PATCH] kexec: Avoid overwriting the current pgd (x86_64)

Magnus Damm <[email protected]> writes:

> --===============82697867595349228==
> 
> kexec: Avoid overwriting the current pgd (x86_64)
> 
> This patch upgrades the x86_64-specific kexec code to avoid overwriting the
> current pgd. Overwriting the current pgd is bad when CONFIG_CRASH_DUMP is used
> to start a secondary kernel that dumps the memory of the previous kernel.

Why is it bad?

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Follow-Ups:
- Re: [PATCH] kexec: Avoid overwriting the current pgd (x86_64)
  - From: "Magnus Damm" <[email protected]>

References:
- [PATCH] kexec: Avoid overwriting the current pgd (x86_64)
  - From: Magnus Damm <[email protected]>

Prev by Date: Re: [PATCH 3/3] ipg: plug leaks in the error path of ipg_nic_open
Next by Date: Re: assert/crash in __rmqueue() when enabling CONFIG_NUMA
Previous by thread: [PATCH] kexec: Avoid overwriting the current pgd (x86_64)
Next by thread: Re: [PATCH] kexec: Avoid overwriting the current pgd (x86_64)
Index(es):
- Date
- Thread

[Index of Archives] [Kernel Newbies] [Netfilter] [Bugtraq] [Photo] [Stuff] [Gimp] [Yosemite News] [MIPS Linux] [ARM Linux] [Linux Security] [Linux RAID] [Video 4 Linux] [Linux for the blind] [Linux Resources]