From: Greg KH <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
To: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
Cc: "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
James Bottomley
<James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>,
Josh Boyer
<jwboyer-rxtnV0ftBwyoClj4AeEUq9i2O/JbrIOy@public.gmane.org>,
"linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: EFI mode after running kexec
Date: Fri, 30 Aug 2013 21:59:58 -0700 [thread overview]
Message-ID: <20130831045958.GA10046@kroah.com> (raw)
In-Reply-To: <20130831045244.GA12617-W2mmg7yuTz0QF/eBCRgRTA@public.gmane.org>
On Sat, Aug 31, 2013 at 06:52:44AM +0200, Borislav Petkov wrote:
> On Fri, Aug 30, 2013 at 09:44:30AM -0700, H. Peter Anvin wrote:
> > I and Borislav actually came up with a reasonable solution for SVAM().
> > It sadly creates a new ABI, but at least is (a) reasonable and (b)
> > seems to match Windows close enough. Basically the regions should get
> > mapped one by one from -4 GB downwards.
>
> Yep, and the mapping works both on OVMF and on my baremetal box. I'm
> currently on vacation but will send out the final stuff when I get back.
>
> Teaching the kexec-ed kernel to simply use those mappings *without*
> doing SVAM() should be easy afterwards.
Ah, that sounds great, if you need me to test anything, just let me
know, I have some UEFI test boxes I've been working on here...
thanks,
greg k-h
next prev parent reply other threads:[~2013-08-31 4:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-29 2:26 EFI mode after running kexec Greg KH
[not found] ` <20130829022632.GA26862-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-08-29 12:18 ` Josh Boyer
[not found] ` <CA+5PVA7jec5DAxgKachkBw1VFobz4rVMQwcqzYQ7ynk7=+d+zg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-29 12:35 ` James Bottomley
2013-08-29 19:20 ` Greg KH
[not found] ` <20130829192001.GB11624-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-08-30 16:44 ` H. Peter Anvin
[not found] ` <5220CBEE.20706-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-08-31 4:52 ` Borislav Petkov
[not found] ` <20130831045244.GA12617-W2mmg7yuTz0QF/eBCRgRTA@public.gmane.org>
2013-08-31 4:59 ` Greg KH [this message]
2013-08-29 19:15 ` Greg KH
[not found] ` <20130829191543.GA11624-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2013-08-29 20:36 ` Josh Boyer
[not found] ` <CA+5PVA5PHc4vOcWwCgTHS=CP8oei-Jc5GK2dfi=EdD_wGVZpXQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-29 20:53 ` Greg KH
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