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    SubjectRe: [RFC PATCH 1/3] Replace paravirt_probe with "platform type" boot header field
    Eric W. Biederman wrote:
    > "H. Peter Anvin" <> writes:
    >> Eric W. Biederman wrote:
    >>> Unlikely. Unless we expect that this offset will come in non-zero.
    >> You might have to worry about that. Historically, the "zero-page" was
    >> really just the setup code overwritten, and it's still true for a big
    >> chunk of it.
    >> One of the major changes in my setup code rewrite is to start out with
    >> an all-zero chunk of memory for this.
    > Well as long as we are in sync with setup.S we are fine. The issue
    > is people generating the real-mode data from scratch, when using the
    > 32bit entry point.

    Point. I'd like that interface to specify that any undefined fields
    should be zero, or we have a hopeless situation on our hands.

    By the way, see the following for the structure definition; prepare to barf:;a=blob;f=arch/i386/boot/boot.h;h=41a16f96ac3476cbd969aabe5e6a792ffe8c64a0;hb=HEAD

    [I intend to move this into include/asm-i386/boot.h, but haven't gotten
    that far yet. I just yesterday got the code booting on both i386 and
    x86-64, but haven't committed all the include/asm-* mods that went a
    long with that yet. I'm also waiting for a Kbuild fix so that the boot
    directory can be shared between i386 and x86-64 without requiring a
    symlink in the source tarball.]

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      Last update: 2007-05-04 19:17    [W:0.024 / U:14.444 seconds]
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