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[PATCH] swap real_to_prot() and prot_to_real() (Re: [PATCH] i386-qemu po
From: |
Robert Millan |
Subject: |
[PATCH] swap real_to_prot() and prot_to_real() (Re: [PATCH] i386-qemu port) |
Date: |
Sun, 21 Jun 2009 21:52:37 +0200 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
When doing the i386-coreboot port I made this choice completely backwards.
I thought real_to_prot() was only useful on i386-pc, because we needed it
for returning from BIOS, and prot_to_real() was useful elsewhere, because
the Linux loader would use it.
Turns out we need real_to_prot() on i386-qemu for the initial transition
to i386 mode, AND we don't need prot_to_real() anywhere other than i386-pc,
because OSes that expect to be loaded in i8086 mode are going to rely on
BIOS calls.
So this patch swaps them. real_to_prot() goes to realmode.S and
prot_to_real() back to startup.S.
--
Robert Millan
The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
how) you may access your data; but nobody's threatening your freedom: we
still allow you to remove your data and not access it at all."
real_prot.diff
Description: Text Data
- Re: [PATCH] move grub_stop() (Re: [PATCH] i386-qemu port), (continued)
Re: [PATCH] i386-qemu port, Pavel Roskin, 2009/06/21
[PATCH] rename kernel.elf to kernel.img (Re: [PATCH] i386-qemu port), Robert Millan, 2009/06/21
[PATCH] swap real_to_prot() and prot_to_real() (Re: [PATCH] i386-qemu port),
Robert Millan <=
Re: [PATCH] i386-qemu port, Robert Millan, 2009/06/21
[PATCH] access gdtdesc on segment 0 unconditionally (Re: [PATCH] i386-qemu port), Robert Millan, 2009/06/21