Re: [Xen-devel] OVMF/Xen, Debian wheezy can't boot with NX on stack (Was: Re: [edk2] [PATCH] OvmfPkg: prevent code execution from DXE stack)

[Josh Triplett <josh@xxxxxxxxxxxxxxxx>]

On Fri, Sep 11, 2015 at 11:27:32PM +0200, Laszlo Ersek wrote:
> On 09/11/15 21:30, Josh Triplett wrote:
> > On Fri, Sep 11, 2015 at 05:28:06PM +0200, Laszlo Ersek wrote:
> >> Breaking Debian Wheezy's and BITS's GRUB is also bad, but the former is
> >> very old (and has a clear upgrade path), while the latter is mainly used
> >> by developers (who can learn about the -fw_cfg switch by googling or
> >> asking on the least without huge trouble). In this case I'm leaning
> >> towards OVMF being "bleeding edge" by default. But, I could be convinced
> >> otherwise.
> > 
> > I certainly think it makes sense for OVMF to adopt the feature sooner
> > than normal, and I agree that OVMF serves as a test case.  But going
> > directly from "not possible to turn on" to "turned on by default",
> > without any period of "off by default but possible to turn on", seems a
> > bit unfortunate.
> > 
> > That said, we could certainly fix BITS to use newer GRUB2, and use
> > (and document) -fw_cfg in the meantime.  So I won't push *too* hard for
> > changing the default, just mildly.
> 
> Okay. If I'll need to send a v2 for any reason, I'll incorporate this.
> If not, then I can post a followup patch later (stating that it's due to
> community feedback).

Thanks!

> > On a vaguely related note, what's the canonical place to report bugs in
> > OVMF?
> 
> (Bugs? What bugs? :))
> 
> It's this list, <edk2-devel@xxxxxxxxxxxx>.

There isn't a tracker of some kind?  That's unfortunate.

But thanks; I'll send mail to the list when we discover an issue while
experimenting with BITS.

(Also, if you don't intend to use github's issue tracker, you might want
to turn it off so people don't file things there and expect a response.)

- Josh Triplett

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