From: Alexander Graf <agraf@suse.de>
To: Aravinda Prasad <aravinda@linux.vnet.ibm.com>,
aik@au1.ibm.com, qemu-ppc@nongnu.org, qemu-devel@nongnu.org
Cc: benh@au1.ibm.com, paulus@samba.org
Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH 5/5] target-ppc: Handle cases when multi-processors get machine-check
Date: Wed, 27 Aug 2014 12:40:07 +0200 [thread overview]
Message-ID: <53FDB587.1030505@suse.de> (raw)
In-Reply-To: <20140825134554.2361.45051.stgit@aravindap>
On 25.08.14 15:45, Aravinda Prasad wrote:
> It is possible for multi-processors to experience machine
> check at or about the same time. As per PAPR, subsequent
> processors serialize waiting for the first processor to
> issue the ibm,nmi-interlock call.
>
> The second processor retries if the first processor which
> received a machine check is still reading the error log
> and is yet to issue ibm,nmi-interlock call.
>
> This patch implements this functionality.
>
> Signed-off-by: Aravinda Prasad <aravinda@linux.vnet.ibm.com>
This patch doesn't make any sense. Both threads will issue an HCALL
which will get locked inside of QEMU, so we'll never see the case where
both hypercalls get processed at the same time.
Alex
next prev parent reply other threads:[~2014-08-27 10:40 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
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 ` Alexander Graf [this message]
2014-08-28 6:56 ` [Qemu-devel] [Qemu-ppc] " 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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