Re: [PATCH v2 12/15] PCI/MSI: Let PCI host bridges declare their reliance on MSI domains

2021-03-24 Thread Marc Zyngier
On Wed, 24 Mar 2021 13:19:38 +, Lorenzo Pieralisi wrote: > > On Tue, Mar 23, 2021 at 06:09:36PM +, Marc Zyngier wrote: > > Hi Robin, > > > > On Tue, 23 Mar 2021 11:45:02 +, > > Robin Murphy wrote: > > > > > > On 2021-03-22 18:46, Marc Zyngier wrote: > > > > The new 'no_msi'

Re: [PATCH v2 12/15] PCI/MSI: Let PCI host bridges declare their reliance on MSI domains

2021-03-24 Thread Lorenzo Pieralisi
On Tue, Mar 23, 2021 at 06:09:36PM +, Marc Zyngier wrote: > Hi Robin, > > On Tue, 23 Mar 2021 11:45:02 +, > Robin Murphy wrote: > > > > On 2021-03-22 18:46, Marc Zyngier wrote: > > > The new 'no_msi' attribute solves the problem of advertising the lack > > > of MSI capability for host

Re: [PATCH v2 12/15] PCI/MSI: Let PCI host bridges declare their reliance on MSI domains

2021-03-23 Thread Robin Murphy
On 2021-03-23 18:09, Marc Zyngier wrote: Hi Robin, On Tue, 23 Mar 2021 11:45:02 +, Robin Murphy wrote: On 2021-03-22 18:46, Marc Zyngier wrote: The new 'no_msi' attribute solves the problem of advertising the lack of MSI capability for host bridges that know for sure that there will be

Re: [PATCH v2 12/15] PCI/MSI: Let PCI host bridges declare their reliance on MSI domains

2021-03-23 Thread Marc Zyngier
Hi Robin, On Tue, 23 Mar 2021 11:45:02 +, Robin Murphy wrote: > > On 2021-03-22 18:46, Marc Zyngier wrote: > > The new 'no_msi' attribute solves the problem of advertising the lack > > of MSI capability for host bridges that know for sure that there will > > be no MSI for their end-points.

Re: [PATCH v2 12/15] PCI/MSI: Let PCI host bridges declare their reliance on MSI domains

2021-03-23 Thread Robin Murphy
On 2021-03-22 18:46, Marc Zyngier wrote: The new 'no_msi' attribute solves the problem of advertising the lack of MSI capability for host bridges that know for sure that there will be no MSI for their end-points. However, there is a whole class of host bridges that cannot know whether MSIs will

[PATCH v2 12/15] PCI/MSI: Let PCI host bridges declare their reliance on MSI domains

2021-03-22 Thread Marc Zyngier
The new 'no_msi' attribute solves the problem of advertising the lack of MSI capability for host bridges that know for sure that there will be no MSI for their end-points. However, there is a whole class of host bridges that cannot know whether MSIs will be provided or not, as they rely on other