svn commit: r194985 - in head/sys: amd64/amd64 amd64/include
mav at FreeBSD.org
Thu Jun 25 21:47:47 UTC 2009
John Baldwin wrote:
> On Thursday 25 June 2009 3:44:18 pm Alexander Motin wrote:
>> John Baldwin wrote:
>>> Author: jhb
>>> Date: Thu Jun 25 18:13:46 2009
>>> New Revision: 194985
>>> URL: http://svn.freebsd.org/changeset/base/194985
>>> - Restore the behavior of pre-allocating IDT vectors for MSI interrupts.
>>> This is mostly important for the multiple MSI message case where the
>>> IDT vectors for the entire group need to be allocated together. This
>>> also restores the assumptions made by the PCI bus code that it could
>>> invoke PCIB_MAP_MSI() once MSI vectors were allocated.
>>> - To avoid whiplash with CPU assignments, change the way that CPUs are
>>> assigned to interrupt sources on activation. Instead of assigning the
>>> CPU via pic_assign_cpu() before calling enable_intr(), allow the
>>> different interrupt source drivers to ask the MD interrupt code which
>>> CPU to use when they allocate an IDT vector. I/O APIC interrupt pins
>>> do this in their pic_enable_intr() routines giving the same behavior as
>>> before. MSI sources do it when the IDT vectors are allocated during
>>> msi_alloc() and msix_alloc().
>>> - Change the intr_table_lock from an sx lock to a mutex.
>>> Tested by: rnoland
>> It seems also fixed previously not working multi-vector MSI mode of AHCI
>> on my less lucky laptop. Thanks.
> I still need to do additional work to make it possible to use cpuset to move
> multi-vector MSI groups around. Does your laptop have multiple cores?
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