From: "Cédric Le Goater" <clg@kaod.org>
To: David Gibson <david@gibson.dropbear.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Huth <thuth@redhat.com>,
qemu-ppc@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH 01/10] ppc: Fix rfi/rfid/hrfi/... emulation
Date: Mon, 20 Jun 2016 08:17:19 +0200 [thread overview]
Message-ID: <33ad19a4-0940-a6ad-9545-a20218453ec8@kaod.org> (raw)
In-Reply-To: <20160620021902.GF6858@voom.fritz.box>
On 06/20/2016 04:19 AM, David Gibson wrote:
> On Mon, Jun 20, 2016 at 07:12:38AM +1000, Benjamin Herrenschmidt wrote:
>> On Sun, 2016-06-19 at 19:23 +0200, Cédric Le Goater wrote:
>>>> You can run a 32-bit OS or firmware on ppc64, but it needs to know that
>>>> it's running on a 64-bit chip and do a few things differently.
>>>
>>> yes sure but qemu would still allow rfi under 64bit CPUs, that is what
>>> I was concerned about. Is that ok ?
>>
>> Why ? A real CPU won't allow it, why should we ?
>
> We shouldn't. However, I'm inclined to in for now, until we have an
> OpenBIOS fix actually committed. I'd prefer to keep the existing
> setup sorta-working when the current situation is unlikely to break
> working code, even though it's definitely wrong.
>
> BenH or Cédric, if you want to resend the hrfi fix patch with the
> 64-bit rfi support left in for no, that would be good.
The current patch does not need fixing. I will send the OpenBIOS patch
shortly after I have looked at the FPU exception.
Linux ppc behaves the same on a 970. So we will need to fix the 'rfi's
there also.
C.
next prev parent reply other threads:[~2016-06-20 6:17 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-13 5:24 [Qemu-devel] [PATCH 00/10] rework exception model to support the HV mode Cédric Le Goater
2016-06-13 5:24 ` [Qemu-devel] [PATCH 01/10] ppc: Fix rfi/rfid/hrfi/... emulation Cédric Le Goater
2016-06-16 1:07 ` David Gibson
2016-06-17 2:27 ` [Qemu-devel] [Qemu-ppc] " David Gibson
2016-06-17 5:54 ` Cédric Le Goater
2016-06-17 6:03 ` Cédric Le Goater
2016-06-17 6:28 ` David Gibson
2016-06-17 6:39 ` Cédric Le Goater
2016-06-17 7:10 ` Thomas Huth
2016-06-17 7:17 ` Cédric Le Goater
2016-06-17 10:41 ` Cédric Le Goater
2016-06-17 11:02 ` Thomas Huth
2016-06-17 11:11 ` Alexander Graf
2016-06-17 14:32 ` Cédric Le Goater
2016-06-18 23:35 ` Benjamin Herrenschmidt
2016-06-19 12:49 ` Cédric Le Goater
2016-06-19 13:00 ` Alexander Graf
2016-06-19 17:21 ` Cédric Le Goater
2016-06-19 22:15 ` Benjamin Herrenschmidt
2016-06-19 22:35 ` Benjamin Herrenschmidt
2016-06-20 7:08 ` Benjamin Herrenschmidt
2016-06-20 7:11 ` Alexander Graf
2016-06-20 8:02 ` Benjamin Herrenschmidt
2016-06-20 9:32 ` Benjamin Herrenschmidt
2016-06-20 13:55 ` Alexander Graf
2016-06-21 8:21 ` Mark Cave-Ayland
2016-06-21 9:33 ` Benjamin Herrenschmidt
2016-06-21 9:37 ` Benjamin Herrenschmidt
2016-06-19 14:08 ` Benjamin Herrenschmidt
2016-06-19 17:23 ` Cédric Le Goater
2016-06-19 21:12 ` Benjamin Herrenschmidt
2016-06-20 2:19 ` David Gibson
2016-06-20 6:17 ` Cédric Le Goater [this message]
2016-06-20 7:47 ` Thomas Huth
2016-06-20 8:21 ` Benjamin Herrenschmidt
2016-06-20 8:46 ` Cédric Le Goater
2016-06-20 8:18 ` Benjamin Herrenschmidt
2016-06-20 6:10 ` Cédric Le Goater
2016-06-20 8:18 ` Benjamin Herrenschmidt
2016-06-18 23:30 ` Benjamin Herrenschmidt
2016-06-18 23:29 ` Benjamin Herrenschmidt
2016-06-17 6:19 ` [Qemu-devel] " Cédric Le Goater
2016-06-13 5:24 ` [Qemu-devel] [PATCH 02/10] ppc: Create cpu_ppc_set_papr() helper (for LPCR) Cédric Le Goater
2016-06-14 6:15 ` David Gibson
2016-06-14 6:52 ` Cédric Le Goater
2016-06-15 1:01 ` David Gibson
2016-06-13 5:24 ` [Qemu-devel] [PATCH 03/10] ppc: Rework POWER7 & POWER8 exception model (part 2) Cédric Le Goater
2016-06-14 6:25 ` David Gibson
2016-06-14 21:19 ` Benjamin Herrenschmidt
2016-06-15 1:00 ` David Gibson
2016-06-13 5:24 ` [Qemu-devel] [PATCH 04/10] ppc: Fix POWER7 and POWER8 exception definitions Cédric Le Goater
2016-06-13 5:24 ` [Qemu-devel] [PATCH 05/10] ppc: Fix generation if ISI/DSI vs. HV mode Cédric Le Goater
2016-06-14 6:34 ` David Gibson
2016-06-14 6:42 ` Cédric Le Goater
2016-06-15 1:09 ` David Gibson
2016-06-13 5:24 ` [Qemu-devel] [PATCH 06/10] ppc: Rework generation of priv and inval interrupts Cédric Le Goater
2016-06-15 1:19 ` David Gibson
2016-06-15 4:31 ` Benjamin Herrenschmidt
2016-06-15 5:06 ` David Gibson
2016-06-13 5:24 ` [Qemu-devel] [PATCH 07/10] ppc: Add real mode CI load/store instructions for P7 and P8 Cédric Le Goater
2016-06-15 3:46 ` David Gibson
2016-06-13 5:24 ` [Qemu-devel] [PATCH 08/10] ppc: Turn a bunch of booleans from int to bool Cédric Le Goater
2016-06-13 5:24 ` [Qemu-devel] [PATCH 09/10] ppc: Move exception generation code out of line Cédric Le Goater
2016-06-13 7:44 ` Thomas Huth
2016-06-13 8:36 ` Cédric Le Goater
2016-06-15 1:57 ` David Gibson
2016-06-13 5:24 ` [Qemu-devel] [PATCH 10/10] ppc: Add P7/P8 Power Management instructions Cédric Le Goater
2016-06-15 1:56 ` David Gibson
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