[PATCH v4 -tip 1/3] x86, MSI: Support multiple MSIs in presense of IRQ remapping

2012-11-19 Thread Alexander Gordeev
The MSI specification has several constraints in comparison with MSI-X, most notable of them is the inability to configure MSIs independently. As a result, it is impossible to dispatch interrupts from different queues to different CPUs. This is largely devalues the support of multiple MSIs in SMP s

[PATCH v4 -tip 1/3] x86, MSI: Support multiple MSIs in presense of IRQ remapping

2012-10-25 Thread Alexander Gordeev
The MSI specification has several constraints in comparison with MSI-X, most notable of them is the inability to configure MSIs independently. As a result, it is impossible to dispatch interrupts from different queues to different CPUs. This is largely devalues the support of multiple MSIs in SMP s

[PATCH v4 -tip 1/3] x86, MSI: Support multiple MSIs in presense of IRQ remapping

2012-10-06 Thread Alexander Gordeev
The MSI specification has several constraints in comparison with MSI-X, most notable of them is the inability to configure MSIs independently. As a result, it is impossible to dispatch interrupts from different queues to different CPUs. This is largely devalues the support of multiple MSIs in SMP s