Re: [PATCH v2 0/4] SMMUv3 CMD_SYNC optimisation

2017-10-16 Thread Will Deacon
On Fri, Oct 13, 2017 at 08:05:21PM +0100, Will Deacon wrote: > On Thu, Aug 31, 2017 at 02:44:24PM +0100, Robin Murphy wrote: > > Since Nate reported a reasonable performance boost from the out-of-line > > MSI polling in v1 [1], I've now implemented the equivalent for cons > > polling as well - that

Re: [PATCH v2 0/4] SMMUv3 CMD_SYNC optimisation

2017-10-16 Thread Robin Murphy
On 13/10/17 20:05, Will Deacon wrote: > Hi Robin, > > On Thu, Aug 31, 2017 at 02:44:24PM +0100, Robin Murphy wrote: >> Since Nate reported a reasonable performance boost from the out-of-line >> MSI polling in v1 [1], I've now implemented the equivalent for cons >> polling as well - that has been b

Re: [PATCH v2 0/4] SMMUv3 CMD_SYNC optimisation

2017-10-13 Thread Will Deacon
Hi Robin, On Thu, Aug 31, 2017 at 02:44:24PM +0100, Robin Murphy wrote: > Since Nate reported a reasonable performance boost from the out-of-line > MSI polling in v1 [1], I've now implemented the equivalent for cons > polling as well - that has been boot-tested on D05 with some trivial I/O > and a

[PATCH v2 0/4] SMMUv3 CMD_SYNC optimisation

2017-08-31 Thread Robin Murphy
Hi all, Since Nate reported a reasonable performance boost from the out-of-line MSI polling in v1 [1], I've now implemented the equivalent for cons polling as well - that has been boot-tested on D05 with some trivial I/O and at least doesn't seem to lock up or explode. There's also a little cosmet