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
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