From: Benjamin Herrenschmidt <benh@au1.ibm.com>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: qemu-ppc@nongnu.org,
Aravinda Prasad <aravinda@linux.vnet.ibm.com>,
aik@au1.ibm.com, qemu-devel@nongnu.org, paulus@samba.org
Subject: Re: [Qemu-devel] [PATCH 2/5] target-ppc: Register and handle HCALL to receive updated RTAS region
Date: Tue, 26 Aug 2014 16:15:40 +1000 [thread overview]
Message-ID: <1409033740.25772.94.camel@pasglop> (raw)
In-Reply-To: <20140826053952.GP9923@voom.redhat.com>
On Tue, 2014-08-26 at 15:39 +1000, David Gibson wrote:
> On Mon, Aug 25, 2014 at 07:15:26PM +0530, Aravinda Prasad wrote:
> > Receive updates from SLOF about the updated rtas-base.
> > A separate patch for SLOF [1] adds functionality to invoke a
> > a private HCALL whenever OS issues instantiate-rtas with
> > a new rtas-base.
> >
> > This is required as qemu needs to know the updated rtas-base
> > as it allocates error reporting structure in RTAS space upon
> > a machine check exception.
>
> This also seems really awkward. Specifically it seems like a rather
> arbitrary and complex division of what qemu's responsible for and what
> SLOF is responsible for.
>
> Instead I'd suggest that we add an H_INSTANTIATE_RTAS hcall, and we
> move the loading of the spapr-rtas blob from normal reset to when that
> hcall is invoked.
Beware that SLOF needs to call RTAS for its own reasons...
So it would be instanciated twice.
Cheers,
Ben.
next prev parent reply other threads:[~2014-08-26 6:16 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-25 13:45 [Qemu-devel] [PATCH 0/5] target-ppc: Add FWNMI support in QEMU for powerKVM guests Aravinda Prasad
2014-08-25 13:45 ` [Qemu-devel] [PATCH 1/5] target-ppc: Extend rtas-blob Aravinda Prasad
2014-08-26 5:38 ` David Gibson
2014-08-26 6:34 ` Aravinda Prasad
2014-08-26 7:24 ` David Gibson
2014-08-28 10:40 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-08-28 18:20 ` Aravinda Prasad
2014-08-28 22:18 ` Alexander Graf
2014-08-28 22:25 ` Benjamin Herrenschmidt
2014-08-29 0:40 ` Alexander Graf
2014-08-29 1:06 ` Benjamin Herrenschmidt
2014-08-29 1:33 ` Alexander Graf
2014-08-29 2:42 ` Benjamin Herrenschmidt
2014-08-29 3:46 ` David Gibson
2014-08-29 3:47 ` David Gibson
2014-09-01 7:46 ` [Qemu-devel] " Alexey Kardashevskiy
2014-09-01 11:23 ` Aravinda Prasad
2014-09-02 4:09 ` Alexey Kardashevskiy
2014-09-02 5:25 ` Aravinda Prasad
2014-09-02 5:49 ` Alexey Kardashevskiy
2014-09-02 5:56 ` Aravinda Prasad
2014-09-02 6:34 ` Alexey Kardashevskiy
2014-09-02 7:07 ` Aravinda Prasad
2014-09-02 8:40 ` Alexey Kardashevskiy
2014-09-02 9:30 ` Aravinda Prasad
2014-09-02 13:17 ` Alexey Kardashevskiy
2014-08-25 13:45 ` [Qemu-devel] [PATCH 2/5] target-ppc: Register and handle HCALL to receive updated RTAS region Aravinda Prasad
2014-08-26 5:39 ` David Gibson
2014-08-26 6:15 ` Benjamin Herrenschmidt [this message]
2014-08-26 7:24 ` David Gibson
2014-08-26 20:05 ` Benjamin Herrenschmidt
2014-08-25 13:45 ` [Qemu-devel] [PATCH 3/5] target-ppc: Build error log Aravinda Prasad
2014-08-26 5:47 ` David Gibson
2014-08-26 6:40 ` Aravinda Prasad
2014-08-27 9:50 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-08-28 6:12 ` Aravinda Prasad
2014-08-28 8:36 ` Alexander Graf
2014-08-28 10:21 ` Benjamin Herrenschmidt
2014-08-28 10:29 ` Alexander Graf
2014-08-28 10:33 ` Benjamin Herrenschmidt
2014-08-28 10:34 ` Benjamin Herrenschmidt
2014-08-28 17:17 ` Aravinda Prasad
2014-08-28 20:07 ` Benjamin Herrenschmidt
2014-08-30 8:06 ` Aravinda Prasad
2014-08-25 13:45 ` [Qemu-devel] [PATCH 4/5] target-ppc: Handle ibm, nmi-register RTAS call Aravinda Prasad
2014-08-26 6:02 ` David Gibson
2014-08-26 6:57 ` Aravinda Prasad
2014-08-27 10:37 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-08-28 6:38 ` Aravinda Prasad
2014-08-28 8:37 ` Alexander Graf
2014-08-28 13:06 ` Tom Musta
2014-08-28 13:11 ` Alexander Graf
2014-08-28 17:42 ` Aravinda Prasad
2014-08-28 22:16 ` Alexander Graf
2014-08-30 8:08 ` Aravinda Prasad
2014-09-04 8:25 ` Aravinda Prasad
2014-09-04 13:09 ` Alexander Graf
2014-09-04 13:49 ` Aravinda Prasad
2014-09-05 8:46 ` Alexander Graf
2014-09-05 8:52 ` Aravinda Prasad
2014-09-07 20:47 ` Alexander Graf
2014-09-26 3:58 ` Alexey Kardashevskiy
2014-10-06 6:32 ` Aravinda Prasad
2014-10-06 9:40 ` Alexander Graf
2014-10-06 11:01 ` Aravinda Prasad
2014-08-25 13:45 ` [Qemu-devel] [PATCH 5/5] target-ppc: Handle cases when multi-processors get machine-check Aravinda Prasad
2014-08-26 6:04 ` David Gibson
2014-08-26 7:04 ` Aravinda Prasad
2014-08-27 10:40 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2014-08-28 6:56 ` Aravinda Prasad
2014-08-28 8:39 ` Alexander Graf
2014-08-28 8:42 ` Alexander Graf
2014-08-28 17:45 ` Aravinda Prasad
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