From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Segher Boessenkool <segher@kernel.crashing.org>
Cc: malc <av1474@comtv.ru>,
linuxppc-dev@lists.ozlabs.org, hollis@penguinppc.org
Subject: Re: Probing for native availability of isel from userspace
Date: Wed, 26 Sep 2012 06:59:31 +1000 [thread overview]
Message-ID: <1348606771.7937.8.camel@pasglop> (raw)
In-Reply-To: <CA1BC0F6-577D-4CEF-85C9-599774B176C9@kernel.crashing.org>
On Tue, 2012-09-25 at 15:17 +0200, Segher Boessenkool wrote:
> >> Fine. But I believe that mfpvr emulation came first, which is the
> >> point
> >> I object to (see the mess that the fact that CPUID is available to
> >> applications made to x86 when SSE registers were added).
> >
> > Heh, possibly, I don't remember... I added the cputable, I think we
> > added mfpvr because we didn't have anything, then I added cputable
> > which
> > got us the HW caps, but some old stuff still relied on mfpvr so we
> > couldn't completely remove it.
>
> If I have my history right end up, MFPVR emulation was added for MoL.
> Which is funny (if you like that kind of thing) because it now hurts
> all other "hypervisor in userspace" kind of things, that might want
> to lie in their emulated PVR...
Are you sure ? MOL had a kernel module, it wouldn't have needed that...
Cheers,
Ben.
next prev parent reply other threads:[~2012-09-25 20:59 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-21 20:05 Probing for native availability of isel from userspace malc
2012-09-22 7:26 ` Segher Boessenkool
2012-09-22 10:12 ` malc
2012-09-22 10:21 ` Gabriel Paubert
2012-09-22 15:37 ` malc
2012-09-22 16:13 ` David Gibson
2012-09-22 19:08 ` Segher Boessenkool
2012-09-22 19:55 ` Benjamin Herrenschmidt
2012-09-22 20:17 ` malc
2012-09-23 1:46 ` Segher Boessenkool
2012-09-24 7:55 ` Gabriel Paubert
2012-09-24 7:58 ` Benjamin Herrenschmidt
2012-09-24 8:06 ` Gabriel Paubert
2012-09-24 9:41 ` Benjamin Herrenschmidt
2012-09-25 13:17 ` Segher Boessenkool
2012-09-25 20:59 ` Benjamin Herrenschmidt [this message]
2012-09-26 0:17 ` Kumar Gala
2012-09-24 23:55 ` Scott Wood
2012-09-25 0:32 ` Benjamin Herrenschmidt
2012-09-25 0:40 ` Scott Wood
2012-09-25 0:47 ` malc
2012-09-25 0:50 ` Scott Wood
2012-09-25 13:31 ` Segher Boessenkool
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=1348606771.7937.8.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=av1474@comtv.ru \
--cc=hollis@penguinppc.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=segher@kernel.crashing.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.