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[Qemu-devel] Re: [Bochs-developers] [PATCH v5 1/5] Add S3 state to DSDT.
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From: |
Kevin O'Connor |
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Subject: |
[Qemu-devel] Re: [Bochs-developers] [PATCH v5 1/5] Add S3 state to DSDT. Handle resume event in the BIOS. |
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Date: |
Sun, 7 Dec 2008 10:10:44 -0500 |
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User-agent: |
Mutt/1.5.18 (2008-05-17) |
On Sun, Dec 07, 2008 at 11:20:31AM +0200, Gleb Natapov wrote:
> On Sat, Dec 06, 2008 at 09:57:38PM -0500, Kevin O'Connor wrote:
> > On Thu, Nov 27, 2008 at 01:02:25PM +0200, Gleb Natapov wrote:
> > > + ;; Save shutdown status
> > > + mov 0x04b0, bl
> > > +
> > > + cmp bl, #0xfe
> > > + jz s3_post
> > What sets 40:b0 to 0xfe on a resume?
> Qemu/Bochs.
Thanks.
If we're going to set a flag to indicate a resume, I think we should
use more than one byte to ensure we don't invoke that path on random
memory. (Maybe something like 0x5333524d -- 'S3RM'?)
Also, can the ACPI dsdt code set the flag instead of the emulators?
-Kevin