From: Segher Boessenkool <segher@kernel.crashing.org>
To: BALATON Zoltan <balaton@eik.bme.hu>
Cc: Fabiano Rosas <farosas@linux.ibm.com>,
danielhb413@gmail.com, qemu-devel@nongnu.org,
qemu-ppc@nongnu.org, clg@kaod.org, openbios@openbios.org,
david@gibson.dropbear.id.au
Subject: Re: [OpenBIOS] Re: [RFC PATCH 0/2] QEMU/openbios: PPC Software TLB support in the G4 family
Date: Thu, 25 Nov 2021 03:38:01 -0600 [thread overview]
Message-ID: <20211125093801.GM614@gate.crashing.org> (raw)
In-Reply-To: <48c4262-ff7d-2897-9764-cadd98683e97@eik.bme.hu>
Hi!
On Thu, Nov 25, 2021 at 01:45:00AM +0100, BALATON Zoltan wrote:
> As for guests, those running on the said PowerMac G4 should have support
> for these CPUs so maybe you can try some Mac OS X versions (or maybe
OSX uses hardware pagetables.
> MorphOS but that is not the best for debugging as there's no source
> available nor any help from its owners but just to see if it boots it may
> be sufficient, it should work on real PowerMac G4).
I have no idea what MorphOS uses, but I bet HPT as well. That is
because HPT is fastest in general. Software TLB reloads are good in
special cases only; the most common is real-time OSes, which can use its
lower guaranteed latency for some special address spaces (and can have a
simpler address map in general).
Segher
next prev parent reply other threads:[~2021-11-25 9:43 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-19 13:44 [RFC PATCH 0/2] QEMU/openbios: PPC Software TLB support in the G4 family Fabiano Rosas
2021-11-19 13:44 ` [RFC PATCH 1/2] ppc: Add support for MPC7450 software TLB miss interrupts Fabiano Rosas
2021-11-19 13:44 ` [RFC PATCH 2/2] ppc: Add PVRs for the MPC7450 family Fabiano Rosas
2021-11-24 22:00 ` [RFC PATCH 0/2] QEMU/openbios: PPC Software TLB support in the G4 family Fabiano Rosas
2021-11-25 0:45 ` BALATON Zoltan
2021-11-25 8:11 ` Cédric Le Goater
2021-11-25 14:03 ` BALATON Zoltan
2021-11-25 14:28 ` Cédric Le Goater
2021-11-25 9:38 ` Segher Boessenkool [this message]
2021-11-26 8:34 ` [OpenBIOS] " Cédric Le Goater
2021-11-26 10:37 ` Segher Boessenkool
2021-11-26 12:13 ` Fabiano Rosas
2021-11-26 12:45 ` Cédric Le Goater
2021-11-26 13:02 ` Fabiano Rosas
2021-11-26 12:43 ` Fabiano Rosas
2021-11-26 14:46 ` BALATON Zoltan
2021-11-26 8:01 ` Mark Cave-Ayland
2021-11-26 8:40 ` Cédric Le Goater
2021-11-26 8:56 ` Mark Cave-Ayland
2021-11-26 12:31 ` Fabiano Rosas
2021-11-26 13:53 ` Cédric Le Goater
2021-11-26 15:02 ` BALATON Zoltan
2021-11-29 15:28 ` Fabiano Rosas
2022-01-07 8:19 ` Cédric Le Goater
2022-01-07 13:19 ` Fabiano Rosas
2022-01-07 13:51 ` Cédric Le Goater
2022-01-07 23:19 ` [OpenBIOS] " Mark Cave-Ayland
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