Re: [PATCH]x86_64: build and use GDT on copied compressed kernel

"Yinghai Lu" <[email protected]> writes:

> please check the patch.
>
> YH
>
> [PATCH]x86_64: build and use GDT on copied compressed kernel 
>
> Build and use GDT on copied compressed kernel postion, instead of using GDT 
> in data segment of loaded compressed kernel. Otherwise decompressing 
> compressed kernel image later in 64bit longmode, will overwrite GDT.

Overwriting the GDT should be fine because we don't reload the segments,
after we overwrite it.  GDT entries are only read when we load segments.
Interrupts are disabled so that should not cause a problem.

Why do you think the current behaviour is a problem?

Eric
-
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:
- [PATCH] serial: set RTS and DTR if flow is 'r'
  - From: Yinghai Lu <[email protected]>
- Re: [PATCH]x86_64: build and use GDT on copied compressed kernel
  - From: "Yinghai Lu" <[email protected]>

References:
- [PATCH]x86_64: build and use GDT on copied compressed kernel
  - From: "Yinghai Lu" <[email protected]>

Prev by Date: Re: sis900 module causes kernel panic in 2.6.21.1 (fatal exception in interrupt)
Next by Date: Re: [PATCH 8/8] One Laptop Per Child power/battery driver
Previous by thread: Re: [PATCH]x86_64: build and use GDT on copied compressed kernel
Next by thread: Re: [PATCH]x86_64: build and use GDT on copied compressed kernel
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]