All of lore.kernel.org
 help / color / mirror / Atom feed
From: Paolo Bonzini <pbonzini@redhat.com>
To: Nate Case <ncase@xes-inc.com>, kvm@vger.kernel.org
Subject: Re: Guest memory backed by PCI BAR (x86)
Date: Thu, 26 Mar 2015 15:02:43 +0100	[thread overview]
Message-ID: <55141183.9000304@redhat.com> (raw)
In-Reply-To: <1790936111.88330.1427298998015.JavaMail.zimbra@xes-inc.com>



On 25/03/2015 16:56, Nate Case wrote:
> I was hoping I could then use a PCI sysfs resource file instead of a
> tmpfs file (i.e., /sys/bus/pci/devices/dddd:bb:ss.f/resourceN) to
> achieve the desired effect.  But I haven't been able to get Linux or
> memtest86+ to boot with this arrangement.  It only boots when KVM
> acceleration is disabled.
> 
> When KVM acceleration is enabled, SeaBIOS seems to function fine
> running out of PCI memory space, but booting the OS resets.
> Specifically, the following happens (I'll stick with the memtest86+
> 5.01 test case for simplicity):

Hi,

please include a trace file of the failure, obtained using "trace-cmd
record -e kvm/* -e kvmmmu/*".

Thanks,

Paolo

  reply	other threads:[~2015-03-26 14:02 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-25 15:56 Guest memory backed by PCI BAR (x86) Nate Case
2015-03-26 14:02 ` Paolo Bonzini [this message]
2015-03-26 16:01   ` Nate Case
2015-03-26 16:07     ` Paolo Bonzini
2015-03-26 16:34       ` Nate Case
2015-03-26 16:40         ` Paolo Bonzini
2015-03-26 16:52           ` Nate Case
2015-03-26 17:04             ` Paolo Bonzini
2015-03-26 17:14               ` Nate Case
2015-03-27 15:27               ` Nate Case

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=55141183.9000304@redhat.com \
    --to=pbonzini@redhat.com \
    --cc=kvm@vger.kernel.org \
    --cc=ncase@xes-inc.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.