From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Andrea Arcangeli <aarcange@redhat.com>, Avi Kivity <avi@redhat.com>
Subject: Re: [Qemu-devel] [PATCH QEMU] Transparent Hugepage Support #3
Date: Wed, 17 Mar 2010 15:52:15 +0000 [thread overview]
Message-ID: <201003171552.15230.paul@codesourcery.com> (raw)
In-Reply-To: <20100317153522.GC5752@random.random>
> > > Size not multiple I think is legitimate, the below-4G chunk isn't
> > > required to end 2M aligned, all it matters is that the above-4G then
> > > starts aligned. In short one thing to add in the future as parameter
> > > to qemu_ram_alloc is the physical address that the host virtual
> > > address corresponds to.
> >
> > In general you don't know this at allocation time.
>
> Caller knows it, it's not like the caller is outside of qemu, it's not
> some library. We know this is enough with the caller that there is now.
No we don't. As discussed previously, there are machines where the physical
location of RAM is configurable at runtime. In fact it's common for the ram
to be completely absent at reset.
Paul
next prev parent reply other threads:[~2010-03-17 15:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-17 14:59 [Qemu-devel] [PATCH QEMU] Transparent Hugepage Support #3 Andrea Arcangeli
2010-03-17 15:05 ` Paul Brook
2010-03-17 15:14 ` Andrea Arcangeli
2010-03-17 15:21 ` Paul Brook
2010-03-17 15:35 ` Andrea Arcangeli
2010-03-17 15:52 ` Paul Brook [this message]
2010-03-17 15:55 ` Andrea Arcangeli
2010-03-17 16:07 ` Paul Brook
2010-03-17 16:23 ` Andrea Arcangeli
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=201003171552.15230.paul@codesourcery.com \
--to=paul@codesourcery.com \
--cc=aarcange@redhat.com \
--cc=avi@redhat.com \
--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 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.