From: Paolo Bonzini <pbonzini@redhat.com>
To: Nate Case <ncase@xes-inc.com>
Cc: kvm@vger.kernel.org
Subject: Re: Guest memory backed by PCI BAR (x86)
Date: Thu, 26 Mar 2015 17:40:22 +0100 [thread overview]
Message-ID: <55143676.1040709@redhat.com> (raw)
In-Reply-To: <57551226.56219.1427387686368.JavaMail.zimbra@xes-inc.com>
On 26/03/2015 17:34, Nate Case wrote:
> 0x52: add al,dh
> 0x54: pop cx
> 0x55: clc
> 0x56: add al,dh
> => 0x58: cs
> 0x59: call 0xf05c
> 0x5c: shr bh,cl
> 0x5e: add al,dh
> 0x60: add ax,0xcf
> 0x63: lock repnz out 0x0,al
This code makes no sense, it looks like the processor has gone into the
weeds. :(
Based on this:
cs 0x9020 36896
I could guess, based on your use of resource2_wc, that the host is
bypassing the processor cache but the guest is not. This use is not
supported on x86 KVM, sorry.
Paolo
next prev parent reply other threads:[~2015-03-26 16:40 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
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 [this message]
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=55143676.1040709@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.