[lkml]   [2007]   [May]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH]x86_64: build and use GDT on copied compressed kernel
"Yinghai Lu" <> writes:

> On 5/12/07, Eric W. Biederman <> wrote:
>> 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?
> just think if GDT should not be overwriten when we are still under
> that GDT setting.
> didn't have chance to test that in HDT or other debug device, when
> setting breaking point after that GDT is overwriten.

It would be interesting to see if you could produce a failure using
that gdt, I don't think you will be able to, even with a debugger.

For data segments we never use that GDT, it is only for the code
segment we use the GDT and that only to get us into 64bit mode.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-05-13 08:51    [W:0.060 / U:0.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site