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| Started by | Michael Ellerman <mpe@ellerman.id.au> |
|---|---|
| First post | 2015-06-15 09:00 +0200 |
| Last post | 2015-06-15 09:00 +0200 |
| Articles | 1 — 1 participant |
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Re: [kernel] powerpc/powernv/ioda2: Add devices only from buses which belong to PE Michael Ellerman <mpe@ellerman.id.au> - 2015-06-15 09:00 +0200
| From | Michael Ellerman <mpe@ellerman.id.au> |
|---|---|
| Date | 2015-06-15 09:00 +0200 |
| Subject | Re: [kernel] powerpc/powernv/ioda2: Add devices only from buses which belong to PE |
| Message-ID | <pBwxd-4bt-21@gated-at.bofh.it> |
On Fri, 2015-12-06 at 06:19:17 UTC, Alexey Kardashevskiy wrote: > The existing code puts all devices from a root PE to the same IOMMU group. > However it is a possible situation when subordinate buses belong to > separate PEs, in this case devices from these subordinate buses > should be added to lower level PE rather to the root PE. > > This limits pnv_ioda_setup_bus_dma() invocation to only PEs which own > all subordinate buses. > > Suggested-by: Gavin Shan <gwshan@linux.vnet.ibm.com> > Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Alexey/Gavin, can one of you write a better changelog for this. Explaining what exactly is broken without it, how it fixes the problem, and why that is the right fix. cheers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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