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Re: [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to me
From: |
Gleb Natapov |
Subject: |
Re: [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to memory) in BIOS |
Date: |
Thu, 27 Nov 2008 14:35:57 +0200 |
On Thu, Nov 27, 2008 at 01:17:16PM +0100, Carl-Daniel Hailfinger wrote:
> Hi,
>
> On 27.11.2008 12:02, Gleb Natapov wrote:
> > This patch series adds S3 (suspend to RAM) ACPI state to BIOS. Most
> > changes concern themselves with preventing BIOS from using memory
> > locations available to a guest OS.
> >
>
> I see the problem you're facing with the overwrite and it looks there
> might be a cleaner solution: If you can lock the CPU cache so that
> writes don't get passed through to RAM, you're free to use any area
> (with a few contraints) for stack without having to worry about
> clobbering memory contents there.
>
> That method is called Cache-as-RAM and I'm currently trying to implement
> it in Qemu. I haven't looked into Bochs yet, but it should be doable
> there as well.
>
It would be nice to not worry about stack location. We may try to use it
when you changes will work in Qemu and BOCHS.
--
Gleb.
- [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to memory) in BIOS, Gleb Natapov, 2008/11/27
- [Qemu-devel] [PATCH v5 1/5] Add S3 state to DSDT. Handle resume event in the BIOS., Gleb Natapov, 2008/11/27
- [Qemu-devel] [PATCH v5 2/5] Preserve memory content during SMM init., Gleb Natapov, 2008/11/27
- [Qemu-devel] [PATCH v5 3/5] Execute rombios32 code from rom address 0xe0000., Gleb Natapov, 2008/11/27
- [Qemu-devel] [PATCH v5 4/5] Don't use unreserved memory in BIOS., Gleb Natapov, 2008/11/27
- [Qemu-devel] [PATCH v5 5/5] Don't power down vga card on entering S3 state., Gleb Natapov, 2008/11/27
- Re: [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to memory) in BIOS, Carl-Daniel Hailfinger, 2008/11/27
- Re: [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to memory) in BIOS,
Gleb Natapov <=
- RE: [Bochs-developers] [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to memory) in BIOS, Stanislav, 2008/11/27
- Re: [Bochs-developers] [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to memory) in BIOS, Carl-Daniel Hailfinger, 2008/11/27
- RE: [Bochs-developers] [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to memory) in BIOS, Stanislav, 2008/11/27
- Re: [Bochs-developers] [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to memory) in BIOS, Carl-Daniel Hailfinger, 2008/11/27
- RE: [Bochs-developers] [Qemu-devel] [PATCH v5 0/5] Support for S3 ACPI state (suspend to memory) in BIOS, Stanislav, 2008/11/29