qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Alexander Graf <agraf@suse.de>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] shm problem
Date: Fri, 22 Jun 2007 17:21:14 +0200	[thread overview]
Message-ID: <467BE8EA.7070705@suse.de> (raw)

Hi,

when using mmap with qemu-i386 on x86_64 it's quite simple to get 32-bit
pointers back (using the MAP_32BIT flag, thanks to Kirill for the patch).

I'm currently in the need for shared memory though, so I need shmat() to
return something within the lower 31 Bits as well.

shmget(0x56a4d5, 488, IPC_CREAT|0660)   = 11075627
shmat(11075627, 0, 0)                   = 0x2b4ceb29e000

Does anyone have an idea how to get around this and force shmat to
return something a 32-bit target can handle? In the end it only calls
mmap too...

Thanks,

Alex

                 reply	other threads:[~2007-06-22 15:19 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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=467BE8EA.7070705@suse.de \
    --to=agraf@suse.de \
    --cc=qemu-devel@nongnu.org \
    /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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).