Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage

H. Peter Anvin wrote:
> I don't know if that would break any programs that are currently
> bypassing the setup.  The existing setup protocol definitely allows
> invoking an entry point which isn't 0x100000 (rather, the 32-bit
> entrypoint is defined by code32_start); I'm not sure how Eric's
> relocatable kernel patches (2.05 protocol) affect that, mostly because I
> haven't seen any boot loaders which actually use it so I can't comment
> on what their code looks like.

Yes, I'd expect that code32_start would point into the ELF text
segment.   You could align things so that the entrypoint is still
actually 0x100000, or bump it up a bit to fit the ELF headers.  I have
to admit I don't quite understand how all that fits together at the moment.

    J

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---

• References:
  • [PATCH] [0/22] x86 candidate patches for review II: 64bit relocatable kernel
    • From: Andi Kleen <[email protected]>
  • [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: Andi Kleen <[email protected]>
  • Re: [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: Jeff Garzik <[email protected]>
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: [email protected] (Eric W. Biederman)
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: Jeremy Fitzhardinge <[email protected]>
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: [email protected] (Eric W. Biederman)
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: Jeremy Fitzhardinge <[email protected]>
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: Gerd Hoffmann <[email protected]>
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: Jeremy Fitzhardinge <[email protected]>
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: "H. Peter Anvin" <[email protected]>
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: Jeremy Fitzhardinge <[email protected]>
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: "H. Peter Anvin" <[email protected]>
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: Jeremy Fitzhardinge <[email protected]>
  • Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
    • From: "H. Peter Anvin" <[email protected]>

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