From: Alexander Graf <agraf@suse.de>
To: Gavin Shan <gwshan@linux.vnet.ibm.com>, kvm-ppc@vger.kernel.org
Cc: aik@ozlabs.ru, alex.williamson@redhat.com,
qiudayu@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 8/8] powerpc/powernv: Error injection infrastructure
Date: Mon, 19 May 2014 13:04:29 +0000 [thread overview]
Message-ID: <537A015D.8030202@suse.de> (raw)
In-Reply-To: <1400040722-29608-9-git-send-email-gwshan@linux.vnet.ibm.com>
On 14.05.14 06:12, Gavin Shan wrote:
> The patch intends to implement the error injection infrastructure
> for PowerNV platform. The predetermined handlers will be called
> according to the type of injected error (e.g. OpalErrinjctTypeIoaBusError).
> For now, we just support PCI error injection. We need support
> injecting other types of errors in future.
Your token to a VFIO device is the VFIO fd. If you want to inject an
error into that device, you should do it via that token. That gets you
all permission problems solved for free.
But I still didn't quite grasp why you need to do this. Why do we need
to inject an error into a device via OPAL when we want to do EEH inside
of a guest? Are you trying to emulate guest side error injection?
Alex
WARNING: multiple messages have this Message-ID (diff)
From: Alexander Graf <agraf@suse.de>
To: Gavin Shan <gwshan@linux.vnet.ibm.com>, kvm-ppc@vger.kernel.org
Cc: aik@ozlabs.ru, alex.williamson@redhat.com,
qiudayu@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 8/8] powerpc/powernv: Error injection infrastructure
Date: Mon, 19 May 2014 15:04:29 +0200 [thread overview]
Message-ID: <537A015D.8030202@suse.de> (raw)
In-Reply-To: <1400040722-29608-9-git-send-email-gwshan@linux.vnet.ibm.com>
On 14.05.14 06:12, Gavin Shan wrote:
> The patch intends to implement the error injection infrastructure
> for PowerNV platform. The predetermined handlers will be called
> according to the type of injected error (e.g. OpalErrinjctTypeIoaBusError).
> For now, we just support PCI error injection. We need support
> injecting other types of errors in future.
Your token to a VFIO device is the VFIO fd. If you want to inject an
error into that device, you should do it via that token. That gets you
all permission problems solved for free.
But I still didn't quite grasp why you need to do this. Why do we need
to inject an error into a device via OPAL when we want to do EEH inside
of a guest? Are you trying to emulate guest side error injection?
Alex
next prev parent reply other threads:[~2014-05-19 13:04 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-14 4:11 [PATCH RFC v3 0/8] EEH Support for VFIO PCI device Gavin Shan
2014-05-14 4:11 ` Gavin Shan
2014-05-14 4:11 ` [PATCH 1/8] drivers/vfio: Introduce CONFIG_VFIO_EEH Gavin Shan
2014-05-14 4:11 ` Gavin Shan
2014-05-14 4:11 ` [PATCH 2/8] powerpc/eeh: Info to trace passed devices Gavin Shan
2014-05-14 4:11 ` Gavin Shan
2014-05-19 12:46 ` Alexander Graf
2014-05-19 12:46 ` Alexander Graf
2014-05-19 22:37 ` Benjamin Herrenschmidt
2014-05-19 22:37 ` Benjamin Herrenschmidt
2014-05-19 23:54 ` Gavin Shan
2014-05-19 23:54 ` Gavin Shan
2014-05-14 4:11 ` [PATCH 3/8] drivers/vfio: New IOCTL command VFIO_EEH_INFO Gavin Shan
2014-05-14 4:11 ` Gavin Shan
2014-05-19 12:51 ` Alexander Graf
2014-05-19 12:51 ` Alexander Graf
2014-05-19 23:57 ` Gavin Shan
2014-05-19 23:57 ` Gavin Shan
2014-05-19 22:33 ` Alex Williamson
2014-05-19 22:33 ` Alex Williamson
2014-05-19 22:51 ` Benjamin Herrenschmidt
2014-05-19 22:51 ` Benjamin Herrenschmidt
2014-05-20 0:22 ` Gavin Shan
2014-05-20 0:22 ` Gavin Shan
2014-05-20 0:37 ` Alex Williamson
2014-05-20 0:37 ` Alex Williamson
2014-05-20 8:28 ` Gavin Shan
2014-05-20 8:28 ` Gavin Shan
2014-05-20 10:02 ` Alexander Graf
2014-05-20 10:02 ` Alexander Graf
2014-05-20 10:23 ` Gavin Shan
2014-05-20 10:23 ` Gavin Shan
2014-05-14 4:11 ` [PATCH 4/8] powerpc/eeh: Avoid event on passed PE Gavin Shan
2014-05-14 4:11 ` Gavin Shan
2014-05-14 4:11 ` [PATCH 5/8] powerpc/powernv: Sync OPAL header file with firmware Gavin Shan
2014-05-14 4:11 ` Gavin Shan
2014-05-14 4:12 ` [PATCH 6/8] powerpc: Extend syscall ppc_rtas() Gavin Shan
2014-05-14 4:12 ` Gavin Shan
2014-05-19 12:55 ` Alexander Graf
2014-05-19 12:55 ` Alexander Graf
2014-05-19 22:38 ` Benjamin Herrenschmidt
2014-05-19 22:38 ` Benjamin Herrenschmidt
2014-05-14 4:12 ` [PATCH 7/8] powerpc/powernv: Implement ppc_call_opal() Gavin Shan
2014-05-14 4:12 ` Gavin Shan
2014-05-19 12:59 ` Alexander Graf
2014-05-19 12:59 ` Alexander Graf
2014-05-14 4:12 ` [PATCH 8/8] powerpc/powernv: Error injection infrastructure Gavin Shan
2014-05-14 4:12 ` Gavin Shan
2014-05-19 13:04 ` Alexander Graf [this message]
2014-05-19 13:04 ` Alexander Graf
2014-05-19 22:40 ` Benjamin Herrenschmidt
2014-05-19 22:40 ` Benjamin Herrenschmidt
2014-05-15 6:34 ` [PATCH RFC v3 0/8] EEH Support for VFIO PCI device Mike Qiu
2014-05-15 6:34 ` Mike Qiu
2014-05-15 7:43 ` Gavin Shan
2014-05-15 7:43 ` Gavin Shan
2014-05-19 10:07 ` Gavin Shan
2014-05-19 10:07 ` Gavin Shan
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