Re: Assignment of GDT entries

linux-os (Dick Johnson) wrote:

The entries 1 through 3 are used during the boot sequence, see
setup.S, search for "gdt" around line 983.

OK, but that's an early GDT used during boot, which shouldn't have any bearing on the GDT of the running kernel.

I can't imagine a reason why you'd want to do this.

I'm looking at packing all the descriptors together so they share a cache line, and therefore reduce the likelihood of a cache miss when loading a segment register.

   J
-
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: Assignment of GDT entries
    • From: "linux-os \(Dick Johnson\)" <[email protected]>

• References:
  • Assignment of GDT entries
    • From: Jeremy Fitzhardinge <[email protected]>
  • Re: Assignment of GDT entries
    • From: "linux-os \(Dick Johnson\)" <[email protected]>

• Prev by Date: Re: Assignment of GDT entries
• Next by Date: Re: [PATCH] 8250 UART backup timer
• Previous by thread: Re: Assignment of GDT entries
• Next by thread: Re: Assignment of GDT entries
• 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]