Bjorn,
On 5/25/2018 3:10 PM, Bjorn Helgaas wrote:
> On Fri, May 25, 2018 at 09:30:59AM -0400, Sinan Kaya wrote:
>> On 5/24/2018 2:35 PM, Bjorn Helgaas wrote:
>>> That sounds like a reasonable idea, and it is definitely another can
>>> of worms. I looked briefly at some of the .shutdown() cases:
Bjorn,
On 5/25/2018 3:10 PM, Bjorn Helgaas wrote:
> On Fri, May 25, 2018 at 09:30:59AM -0400, Sinan Kaya wrote:
>> On 5/24/2018 2:35 PM, Bjorn Helgaas wrote:
>>> That sounds like a reasonable idea, and it is definitely another can
>>> of worms. I looked briefly at some of the .shutdown() cases:
On 5/24/2018 6:37 AM, Don Brace wrote:
>> But we really need guidance from an hpsa expert. I don't know the
>> filesystem/SCSI/hpsa details.
>>
>> Bjorn
> It's most likely OCSD traffic that will stop when bus mastering is turned off.
> So, I'll run some tests on my end before ACKing your patch.
On 5/24/2018 6:37 AM, Don Brace wrote:
>> But we really need guidance from an hpsa expert. I don't know the
>> filesystem/SCSI/hpsa details.
>>
>> Bjorn
> It's most likely OCSD traffic that will stop when bus mastering is turned off.
> So, I'll run some tests on my end before ACKing your patch.
On 2018-05-25 15:10, Bjorn Helgaas wrote:
On Fri, May 25, 2018 at 09:30:59AM -0400, Sinan Kaya wrote:
On 5/24/2018 2:35 PM, Bjorn Helgaas wrote:
> That sounds like a reasonable idea, and it is definitely another can
> of worms. I looked briefly at some of the .shutdown() cases:
should we
On 2018-05-25 15:10, Bjorn Helgaas wrote:
On Fri, May 25, 2018 at 09:30:59AM -0400, Sinan Kaya wrote:
On 5/24/2018 2:35 PM, Bjorn Helgaas wrote:
> That sounds like a reasonable idea, and it is definitely another can
> of worms. I looked briefly at some of the .shutdown() cases:
should we
On Fri, May 25, 2018 at 09:30:59AM -0400, Sinan Kaya wrote:
> On 5/24/2018 2:35 PM, Bjorn Helgaas wrote:
> > That sounds like a reasonable idea, and it is definitely another can
> > of worms. I looked briefly at some of the .shutdown() cases:
>
> should we throw it into 4.18 and see what
On Fri, May 25, 2018 at 09:30:59AM -0400, Sinan Kaya wrote:
> On 5/24/2018 2:35 PM, Bjorn Helgaas wrote:
> > That sounds like a reasonable idea, and it is definitely another can
> > of worms. I looked briefly at some of the .shutdown() cases:
>
> should we throw it into 4.18 and see what
On 5/24/2018 2:35 PM, Bjorn Helgaas wrote:
> That sounds like a reasonable idea, and it is definitely another can
> of worms. I looked briefly at some of the .shutdown() cases:
should we throw it into 4.18 and see what happens?
--
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an
On 5/24/2018 2:35 PM, Bjorn Helgaas wrote:
> That sounds like a reasonable idea, and it is definitely another can
> of worms. I looked briefly at some of the .shutdown() cases:
should we throw it into 4.18 and see what happens?
--
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an
On Wed, May 23, 2018 at 06:57:18PM -0400, Sinan Kaya wrote:
> On 5/23/2018 5:32 PM, Bjorn Helgaas wrote:
> >
> > The crash seems to indicate that the hpsa device attempted a DMA after
> > we cleared the Root Port's PCI_COMMAND_MASTER, which means
> > hpsa_shutdown() didn't stop DMA from the
On Wed, May 23, 2018 at 06:57:18PM -0400, Sinan Kaya wrote:
> On 5/23/2018 5:32 PM, Bjorn Helgaas wrote:
> >
> > The crash seems to indicate that the hpsa device attempted a DMA after
> > we cleared the Root Port's PCI_COMMAND_MASTER, which means
> > hpsa_shutdown() didn't stop DMA from the
On 2018-05-24 09:07, Bjorn Helgaas wrote:
On Thu, May 24, 2018 at 07:43:05AM -0400, Sinan Kaya wrote:
On 5/23/2018 6:57 PM, Sinan Kaya wrote:
>> The crash seems to indicate that the hpsa device attempted a DMA after
>> we cleared the Root Port's PCI_COMMAND_MASTER, which means
>>
On 2018-05-24 09:07, Bjorn Helgaas wrote:
On Thu, May 24, 2018 at 07:43:05AM -0400, Sinan Kaya wrote:
On 5/23/2018 6:57 PM, Sinan Kaya wrote:
>> The crash seems to indicate that the hpsa device attempted a DMA after
>> we cleared the Root Port's PCI_COMMAND_MASTER, which means
>>
On Thu, May 24, 2018 at 07:43:05AM -0400, Sinan Kaya wrote:
> On 5/23/2018 6:57 PM, Sinan Kaya wrote:
> >> The crash seems to indicate that the hpsa device attempted a DMA after
> >> we cleared the Root Port's PCI_COMMAND_MASTER, which means
> >> hpsa_shutdown() didn't stop DMA from the device (it
On Thu, May 24, 2018 at 07:43:05AM -0400, Sinan Kaya wrote:
> On 5/23/2018 6:57 PM, Sinan Kaya wrote:
> >> The crash seems to indicate that the hpsa device attempted a DMA after
> >> we cleared the Root Port's PCI_COMMAND_MASTER, which means
> >> hpsa_shutdown() didn't stop DMA from the device (it
On 5/23/2018 6:57 PM, Sinan Kaya wrote:
>> The crash seems to indicate that the hpsa device attempted a DMA after
>> we cleared the Root Port's PCI_COMMAND_MASTER, which means
>> hpsa_shutdown() didn't stop DMA from the device (it looks like *most*
>> shutdown methods don't disable device DMA, so
On 5/23/2018 6:57 PM, Sinan Kaya wrote:
>> The crash seems to indicate that the hpsa device attempted a DMA after
>> we cleared the Root Port's PCI_COMMAND_MASTER, which means
>> hpsa_shutdown() didn't stop DMA from the device (it looks like *most*
>> shutdown methods don't disable device DMA, so
On 5/23/2018 5:32 PM, Bjorn Helgaas wrote:
>
> The crash seems to indicate that the hpsa device attempted a DMA after
> we cleared the Root Port's PCI_COMMAND_MASTER, which means
> hpsa_shutdown() didn't stop DMA from the device (it looks like *most*
> shutdown methods don't disable device DMA,
On 5/23/2018 5:32 PM, Bjorn Helgaas wrote:
>
> The crash seems to indicate that the hpsa device attempted a DMA after
> we cleared the Root Port's PCI_COMMAND_MASTER, which means
> hpsa_shutdown() didn't stop DMA from the device (it looks like *most*
> shutdown methods don't disable device DMA,
[-cc Gabriele (invalid email address)]
[+cc Don, esc.storagedev, linux-scsi since hpsa is involved]
Background for newcomers:
Ryan reported a panic on shutdown/reboot [1] on DL360 Gen9. I think
the problem is that the shutdown path clears PCI_COMMAND_MASTER on
the Root Port leading to an
[-cc Gabriele (invalid email address)]
[+cc Don, esc.storagedev, linux-scsi since hpsa is involved]
Background for newcomers:
Ryan reported a panic on shutdown/reboot [1] on DL360 Gen9. I think
the problem is that the shutdown path clears PCI_COMMAND_MASTER on
the Root Port leading to an
'Commit cc27b735ad3a ("PCI/portdrv: Turn off PCIe services during
shutdown")' has been added to kernel to shutdown pending PCIe port
service interrupts during reboot so that a newly started kexec kernel
wouldn't observe pending interrupts.
pcie_port_device_remove() is disabling the root port and
'Commit cc27b735ad3a ("PCI/portdrv: Turn off PCIe services during
shutdown")' has been added to kernel to shutdown pending PCIe port
service interrupts during reboot so that a newly started kexec kernel
wouldn't observe pending interrupts.
pcie_port_device_remove() is disabling the root port and
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