linux-kernel - Re: [PATCH 0/3] Enable multiple MSI feature in pSeries

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Message-ID: <1362107325.2712.2.camel@localhost>
Date:	Fri, 01 Mar 2013 11:08:45 +0800
From:	Mike <qiudayu@...ux.vnet.ibm.com>
To:	linuxppc-dev@...ts.ozlabs.org
Cc:	linux-kernel@...r.kernel.org, benh@...nel.crashing.org,
	tglx@...utronix.de
Subject: Re: [PATCH 0/3] Enable multiple MSI feature in pSeries

Hi all

Any comments? or any questions about my patchset?

Thanks
Mike
在 2013-01-15二的 15:38 +0800，Mike Qiu写道：
> Currently, multiple MSI feature hasn't been enabled in pSeries,
> These patches try to enbale this feature.
> 
> These patches have been tested by using ipr driver, and the driver patch
> has been made by Wen Xiong <wenxiong@...ux.vnet.ibm.com>:
> 
> [PATCH 0/7] Add support for new IBM SAS controllers
> 
> Test platform: One partition of pSeries with one cpu core(4 SMTs) and 
>                RAID bus controller: IBM PCI-E IPR SAS Adapter (ASIC) in POWER7
> OS version: SUSE Linux Enterprise Server 11 SP2  (ppc64) with 3.8-rc3 kernel 
> 
> IRQ 21 and 22 are assigned to the ipr device which support 2 mutiple MSI.
> 
> The test results is shown by 'cat /proc/interrups':
>           CPU0       CPU1       CPU2       CPU3       
> 16:     240458     261601     226310     200425      XICS Level     IPI
> 17:          0          0          0          0      XICS Level     RAS_EPOW
> 18:         10          0          3          2      XICS Level     hvc_console
> 19:     122182      28481      28527      28864      XICS Level     ibmvscsi
> 20:        506    7388226        108        118      XICS Level     eth0
> 21:          6          5          5          5      XICS Level     host1-0
> 22:        817        814        816        813      XICS Level     host1-1
> LOC:     398077     316725     231882     203049   Local timer interrupts
> SPU:       1659        919        961        903   Spurious interrupts
> CNT:          0          0          0          0   Performance
> monitoring interrupts
> MCE:          0          0          0          0   Machine check exceptions
> 
> Mike Qiu (3):
>   irq: Set multiple MSI descriptor data for multiple IRQs
>   irq: Add hw continuous IRQs map to virtual continuous IRQs support
>   powerpc/pci: Enable pSeries multiple MSI feature
> 
>  arch/powerpc/kernel/msi.c            |    4 --
>  arch/powerpc/platforms/pseries/msi.c |   62 ++++++++++++++++++++++++++++++++-
>  include/linux/irq.h                  |    4 ++
>  include/linux/irqdomain.h            |    3 ++
>  kernel/irq/chip.c                    |   40 ++++++++++++++++-----
>  kernel/irq/irqdomain.c               |   61 +++++++++++++++++++++++++++++++++
>  6 files changed, 158 insertions(+), 16 deletions(-)
> 



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