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

Mike
2013-03-07T04:42:17Z

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@linux.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(-)
>